JWST/NIRCam Probes Young Star Clusters in the Reionization Era Sunrise Arc

Star cluster formation in the early universe and its contribution to reionization remains largely unconstrained to date. Here we present JWST/NIRCam imaging of the most highly magnified galaxy known at z ∼ 6, the Sunrise arc. We identify six young massive star clusters (YMCs) with measured radii spa...
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Autor*in:	Eros Vanzella [verfasserIn] Adélaïde Claeyssens [verfasserIn] Brian Welch [verfasserIn] Angela Adamo [verfasserIn] Dan Coe [verfasserIn] Jose M. Diego [verfasserIn] Guillaume Mahler [verfasserIn] Gourav Khullar [verfasserIn] Vasily Kokorev [verfasserIn] Masamune Oguri [verfasserIn] Swara Ravindranath [verfasserIn] Lukas J. Furtak [verfasserIn] Tiger Yu-Yang Hsiao [verfasserIn] Abdurro’uf [verfasserIn] Nir Mandelker [verfasserIn] Gabriel Brammer [verfasserIn] Larry D. Bradley [verfasserIn] Maruša Bradač [verfasserIn] Christopher J. Conselice [verfasserIn] Pratika Dayal [verfasserIn] Mario Nonino [verfasserIn] Felipe Andrade-Santos [verfasserIn] Rogier A. Windhorst [verfasserIn] Nor Pirzkal [verfasserIn] Keren Sharon [verfasserIn] S. E. de Mink [verfasserIn] Seiji Fujimoto [verfasserIn] Adi Zitrin [verfasserIn] Jan J. Eldridge [verfasserIn] Colin Norman [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	High-redshift galaxies Young star clusters Reionization Globular star clusters

Übergeordnetes Werk:	In: The Astrophysical Journal - IOP Publishing, 2022, 945(2023), 1, p 53
Übergeordnetes Werk:	volume:945 ; year:2023 ; number:1, p 53

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3847/1538-4357/acb59a

Katalog-ID:	DOAJ089159241

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520			\|a Star cluster formation in the early universe and its contribution to reionization remains largely unconstrained to date. Here we present JWST/NIRCam imaging of the most highly magnified galaxy known at z ∼ 6, the Sunrise arc. We identify six young massive star clusters (YMCs) with measured radii spanning from ∼20 down to ∼1 pc (corrected for lensing magnification), estimated stellar masses of ∼10 ^6–7 M _⊙ , and ages of 1–30 Myr based on SED fitting to photometry measured in eight filters extending to rest frame 7000 Å. The resulting stellar mass surface densities are higher than 1000 M _⊙ pc ^−2 (up to a few 10 ^5 M _⊙ pc ^−2 ), and their inferred dynamical ages qualify the majority of these systems as gravitationally bound stellar clusters. The star cluster ages map the progression of star formation along the arc, with two evolved systems (≳10 Myr old) followed by very young clusters. The youngest stellar clusters (<5 Myr) show evidence of prominent H β +[O iii ] emission based on photometry with equivalent widths larger than <1000 Å rest frame and are hosted in a 200 pc sized star-forming complex. Such a region dominates the ionizing photon production with a high efficiency $\mathrm{log}({\xi }_{\mathrm{ion}}[\mathrm{Hz}\,{\mathrm{erg}}^{-1}])\sim 25.7$ . A significant fraction of the recently formed stellar mass of the galaxy (10%–30%) occurred in these YMCs. We speculate that such sources of ionizing radiation boost the ionizing photon production efficiency, which eventually carves ionized channels that might favor the escape of Lyman continuum radiation. The survival of some of the clusters would make them the progenitors of massive and relatively metal-poor globular clusters in the local universe.
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700	0		\|a Jan J. Eldridge \|e verfasserin \|4 aut
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allfields	10.3847/1538-4357/acb59a doi (DE-627)DOAJ089159241 (DE-599)DOAJd99c6d5c826f4893af7675807cc56222 DE-627 ger DE-627 rakwb eng QB460-466 Eros Vanzella verfasserin aut JWST/NIRCam Probes Young Star Clusters in the Reionization Era Sunrise Arc 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Star cluster formation in the early universe and its contribution to reionization remains largely unconstrained to date. Here we present JWST/NIRCam imaging of the most highly magnified galaxy known at z ∼ 6, the Sunrise arc. We identify six young massive star clusters (YMCs) with measured radii spanning from ∼20 down to ∼1 pc (corrected for lensing magnification), estimated stellar masses of ∼10 ^6–7 M _⊙ , and ages of 1–30 Myr based on SED fitting to photometry measured in eight filters extending to rest frame 7000 Å. The resulting stellar mass surface densities are higher than 1000 M _⊙ pc ^−2 (up to a few 10 ^5 M _⊙ pc ^−2 ), and their inferred dynamical ages qualify the majority of these systems as gravitationally bound stellar clusters. The star cluster ages map the progression of star formation along the arc, with two evolved systems (≳10 Myr old) followed by very young clusters. The youngest stellar clusters (<5 Myr) show evidence of prominent H β +[O iii ] emission based on photometry with equivalent widths larger than <1000 Å rest frame and are hosted in a 200 pc sized star-forming complex. Such a region dominates the ionizing photon production with a high efficiency $\mathrm{log}({\xi }_{\mathrm{ion}}[\mathrm{Hz}\,{\mathrm{erg}}^{-1}])\sim 25.7$ . A significant fraction of the recently formed stellar mass of the galaxy (10%–30%) occurred in these YMCs. We speculate that such sources of ionizing radiation boost the ionizing photon production efficiency, which eventually carves ionized channels that might favor the escape of Lyman continuum radiation. The survival of some of the clusters would make them the progenitors of massive and relatively metal-poor globular clusters in the local universe. High-redshift galaxies Young star clusters Reionization Globular star clusters Astrophysics Adélaïde Claeyssens verfasserin aut Brian Welch verfasserin aut Angela Adamo verfasserin aut Dan Coe verfasserin aut Jose M. Diego verfasserin aut Guillaume Mahler verfasserin aut Gourav Khullar verfasserin aut Vasily Kokorev verfasserin aut Masamune Oguri verfasserin aut Swara Ravindranath verfasserin aut Lukas J. Furtak verfasserin aut Tiger Yu-Yang Hsiao verfasserin aut Abdurro’uf verfasserin aut Nir Mandelker verfasserin aut Gabriel Brammer verfasserin aut Larry D. Bradley verfasserin aut Maruša Bradač verfasserin aut Christopher J. Conselice verfasserin aut Pratika Dayal verfasserin aut Mario Nonino verfasserin aut Felipe Andrade-Santos verfasserin aut Rogier A. Windhorst verfasserin aut Nor Pirzkal verfasserin aut Keren Sharon verfasserin aut S. E. de Mink verfasserin aut Seiji Fujimoto verfasserin aut Adi Zitrin verfasserin aut Jan J. Eldridge verfasserin aut Colin Norman verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 945(2023), 1, p 53 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:945 year:2023 number:1, p 53 https://doi.org/10.3847/1538-4357/acb59a kostenfrei https://doaj.org/article/d99c6d5c826f4893af7675807cc56222 kostenfrei https://doi.org/10.3847/1538-4357/acb59a kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 945 2023 1, p 53
spelling	10.3847/1538-4357/acb59a doi (DE-627)DOAJ089159241 (DE-599)DOAJd99c6d5c826f4893af7675807cc56222 DE-627 ger DE-627 rakwb eng QB460-466 Eros Vanzella verfasserin aut JWST/NIRCam Probes Young Star Clusters in the Reionization Era Sunrise Arc 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Star cluster formation in the early universe and its contribution to reionization remains largely unconstrained to date. Here we present JWST/NIRCam imaging of the most highly magnified galaxy known at z ∼ 6, the Sunrise arc. We identify six young massive star clusters (YMCs) with measured radii spanning from ∼20 down to ∼1 pc (corrected for lensing magnification), estimated stellar masses of ∼10 ^6–7 M _⊙ , and ages of 1–30 Myr based on SED fitting to photometry measured in eight filters extending to rest frame 7000 Å. The resulting stellar mass surface densities are higher than 1000 M _⊙ pc ^−2 (up to a few 10 ^5 M _⊙ pc ^−2 ), and their inferred dynamical ages qualify the majority of these systems as gravitationally bound stellar clusters. The star cluster ages map the progression of star formation along the arc, with two evolved systems (≳10 Myr old) followed by very young clusters. The youngest stellar clusters (<5 Myr) show evidence of prominent H β +[O iii ] emission based on photometry with equivalent widths larger than <1000 Å rest frame and are hosted in a 200 pc sized star-forming complex. Such a region dominates the ionizing photon production with a high efficiency $\mathrm{log}({\xi }_{\mathrm{ion}}[\mathrm{Hz}\,{\mathrm{erg}}^{-1}])\sim 25.7$ . A significant fraction of the recently formed stellar mass of the galaxy (10%–30%) occurred in these YMCs. We speculate that such sources of ionizing radiation boost the ionizing photon production efficiency, which eventually carves ionized channels that might favor the escape of Lyman continuum radiation. The survival of some of the clusters would make them the progenitors of massive and relatively metal-poor globular clusters in the local universe. High-redshift galaxies Young star clusters Reionization Globular star clusters Astrophysics Adélaïde Claeyssens verfasserin aut Brian Welch verfasserin aut Angela Adamo verfasserin aut Dan Coe verfasserin aut Jose M. Diego verfasserin aut Guillaume Mahler verfasserin aut Gourav Khullar verfasserin aut Vasily Kokorev verfasserin aut Masamune Oguri verfasserin aut Swara Ravindranath verfasserin aut Lukas J. Furtak verfasserin aut Tiger Yu-Yang Hsiao verfasserin aut Abdurro’uf verfasserin aut Nir Mandelker verfasserin aut Gabriel Brammer verfasserin aut Larry D. Bradley verfasserin aut Maruša Bradač verfasserin aut Christopher J. Conselice verfasserin aut Pratika Dayal verfasserin aut Mario Nonino verfasserin aut Felipe Andrade-Santos verfasserin aut Rogier A. Windhorst verfasserin aut Nor Pirzkal verfasserin aut Keren Sharon verfasserin aut S. E. de Mink verfasserin aut Seiji Fujimoto verfasserin aut Adi Zitrin verfasserin aut Jan J. Eldridge verfasserin aut Colin Norman verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 945(2023), 1, p 53 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:945 year:2023 number:1, p 53 https://doi.org/10.3847/1538-4357/acb59a kostenfrei https://doaj.org/article/d99c6d5c826f4893af7675807cc56222 kostenfrei https://doi.org/10.3847/1538-4357/acb59a kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 945 2023 1, p 53
allfields_unstemmed	10.3847/1538-4357/acb59a doi (DE-627)DOAJ089159241 (DE-599)DOAJd99c6d5c826f4893af7675807cc56222 DE-627 ger DE-627 rakwb eng QB460-466 Eros Vanzella verfasserin aut JWST/NIRCam Probes Young Star Clusters in the Reionization Era Sunrise Arc 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Star cluster formation in the early universe and its contribution to reionization remains largely unconstrained to date. Here we present JWST/NIRCam imaging of the most highly magnified galaxy known at z ∼ 6, the Sunrise arc. We identify six young massive star clusters (YMCs) with measured radii spanning from ∼20 down to ∼1 pc (corrected for lensing magnification), estimated stellar masses of ∼10 ^6–7 M _⊙ , and ages of 1–30 Myr based on SED fitting to photometry measured in eight filters extending to rest frame 7000 Å. The resulting stellar mass surface densities are higher than 1000 M _⊙ pc ^−2 (up to a few 10 ^5 M _⊙ pc ^−2 ), and their inferred dynamical ages qualify the majority of these systems as gravitationally bound stellar clusters. The star cluster ages map the progression of star formation along the arc, with two evolved systems (≳10 Myr old) followed by very young clusters. The youngest stellar clusters (<5 Myr) show evidence of prominent H β +[O iii ] emission based on photometry with equivalent widths larger than <1000 Å rest frame and are hosted in a 200 pc sized star-forming complex. Such a region dominates the ionizing photon production with a high efficiency $\mathrm{log}({\xi }_{\mathrm{ion}}[\mathrm{Hz}\,{\mathrm{erg}}^{-1}])\sim 25.7$ . A significant fraction of the recently formed stellar mass of the galaxy (10%–30%) occurred in these YMCs. We speculate that such sources of ionizing radiation boost the ionizing photon production efficiency, which eventually carves ionized channels that might favor the escape of Lyman continuum radiation. The survival of some of the clusters would make them the progenitors of massive and relatively metal-poor globular clusters in the local universe. High-redshift galaxies Young star clusters Reionization Globular star clusters Astrophysics Adélaïde Claeyssens verfasserin aut Brian Welch verfasserin aut Angela Adamo verfasserin aut Dan Coe verfasserin aut Jose M. Diego verfasserin aut Guillaume Mahler verfasserin aut Gourav Khullar verfasserin aut Vasily Kokorev verfasserin aut Masamune Oguri verfasserin aut Swara Ravindranath verfasserin aut Lukas J. Furtak verfasserin aut Tiger Yu-Yang Hsiao verfasserin aut Abdurro’uf verfasserin aut Nir Mandelker verfasserin aut Gabriel Brammer verfasserin aut Larry D. Bradley verfasserin aut Maruša Bradač verfasserin aut Christopher J. Conselice verfasserin aut Pratika Dayal verfasserin aut Mario Nonino verfasserin aut Felipe Andrade-Santos verfasserin aut Rogier A. Windhorst verfasserin aut Nor Pirzkal verfasserin aut Keren Sharon verfasserin aut S. E. de Mink verfasserin aut Seiji Fujimoto verfasserin aut Adi Zitrin verfasserin aut Jan J. Eldridge verfasserin aut Colin Norman verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 945(2023), 1, p 53 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:945 year:2023 number:1, p 53 https://doi.org/10.3847/1538-4357/acb59a kostenfrei https://doaj.org/article/d99c6d5c826f4893af7675807cc56222 kostenfrei https://doi.org/10.3847/1538-4357/acb59a kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 945 2023 1, p 53
allfieldsGer	10.3847/1538-4357/acb59a doi (DE-627)DOAJ089159241 (DE-599)DOAJd99c6d5c826f4893af7675807cc56222 DE-627 ger DE-627 rakwb eng QB460-466 Eros Vanzella verfasserin aut JWST/NIRCam Probes Young Star Clusters in the Reionization Era Sunrise Arc 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Star cluster formation in the early universe and its contribution to reionization remains largely unconstrained to date. Here we present JWST/NIRCam imaging of the most highly magnified galaxy known at z ∼ 6, the Sunrise arc. We identify six young massive star clusters (YMCs) with measured radii spanning from ∼20 down to ∼1 pc (corrected for lensing magnification), estimated stellar masses of ∼10 ^6–7 M _⊙ , and ages of 1–30 Myr based on SED fitting to photometry measured in eight filters extending to rest frame 7000 Å. The resulting stellar mass surface densities are higher than 1000 M _⊙ pc ^−2 (up to a few 10 ^5 M _⊙ pc ^−2 ), and their inferred dynamical ages qualify the majority of these systems as gravitationally bound stellar clusters. The star cluster ages map the progression of star formation along the arc, with two evolved systems (≳10 Myr old) followed by very young clusters. The youngest stellar clusters (<5 Myr) show evidence of prominent H β +[O iii ] emission based on photometry with equivalent widths larger than <1000 Å rest frame and are hosted in a 200 pc sized star-forming complex. Such a region dominates the ionizing photon production with a high efficiency $\mathrm{log}({\xi }_{\mathrm{ion}}[\mathrm{Hz}\,{\mathrm{erg}}^{-1}])\sim 25.7$ . A significant fraction of the recently formed stellar mass of the galaxy (10%–30%) occurred in these YMCs. We speculate that such sources of ionizing radiation boost the ionizing photon production efficiency, which eventually carves ionized channels that might favor the escape of Lyman continuum radiation. The survival of some of the clusters would make them the progenitors of massive and relatively metal-poor globular clusters in the local universe. High-redshift galaxies Young star clusters Reionization Globular star clusters Astrophysics Adélaïde Claeyssens verfasserin aut Brian Welch verfasserin aut Angela Adamo verfasserin aut Dan Coe verfasserin aut Jose M. Diego verfasserin aut Guillaume Mahler verfasserin aut Gourav Khullar verfasserin aut Vasily Kokorev verfasserin aut Masamune Oguri verfasserin aut Swara Ravindranath verfasserin aut Lukas J. Furtak verfasserin aut Tiger Yu-Yang Hsiao verfasserin aut Abdurro’uf verfasserin aut Nir Mandelker verfasserin aut Gabriel Brammer verfasserin aut Larry D. Bradley verfasserin aut Maruša Bradač verfasserin aut Christopher J. Conselice verfasserin aut Pratika Dayal verfasserin aut Mario Nonino verfasserin aut Felipe Andrade-Santos verfasserin aut Rogier A. Windhorst verfasserin aut Nor Pirzkal verfasserin aut Keren Sharon verfasserin aut S. E. de Mink verfasserin aut Seiji Fujimoto verfasserin aut Adi Zitrin verfasserin aut Jan J. Eldridge verfasserin aut Colin Norman verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 945(2023), 1, p 53 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:945 year:2023 number:1, p 53 https://doi.org/10.3847/1538-4357/acb59a kostenfrei https://doaj.org/article/d99c6d5c826f4893af7675807cc56222 kostenfrei https://doi.org/10.3847/1538-4357/acb59a kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 945 2023 1, p 53
allfieldsSound	10.3847/1538-4357/acb59a doi (DE-627)DOAJ089159241 (DE-599)DOAJd99c6d5c826f4893af7675807cc56222 DE-627 ger DE-627 rakwb eng QB460-466 Eros Vanzella verfasserin aut JWST/NIRCam Probes Young Star Clusters in the Reionization Era Sunrise Arc 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Star cluster formation in the early universe and its contribution to reionization remains largely unconstrained to date. Here we present JWST/NIRCam imaging of the most highly magnified galaxy known at z ∼ 6, the Sunrise arc. We identify six young massive star clusters (YMCs) with measured radii spanning from ∼20 down to ∼1 pc (corrected for lensing magnification), estimated stellar masses of ∼10 ^6–7 M _⊙ , and ages of 1–30 Myr based on SED fitting to photometry measured in eight filters extending to rest frame 7000 Å. The resulting stellar mass surface densities are higher than 1000 M _⊙ pc ^−2 (up to a few 10 ^5 M _⊙ pc ^−2 ), and their inferred dynamical ages qualify the majority of these systems as gravitationally bound stellar clusters. The star cluster ages map the progression of star formation along the arc, with two evolved systems (≳10 Myr old) followed by very young clusters. The youngest stellar clusters (<5 Myr) show evidence of prominent H β +[O iii ] emission based on photometry with equivalent widths larger than <1000 Å rest frame and are hosted in a 200 pc sized star-forming complex. Such a region dominates the ionizing photon production with a high efficiency $\mathrm{log}({\xi }_{\mathrm{ion}}[\mathrm{Hz}\,{\mathrm{erg}}^{-1}])\sim 25.7$ . A significant fraction of the recently formed stellar mass of the galaxy (10%–30%) occurred in these YMCs. We speculate that such sources of ionizing radiation boost the ionizing photon production efficiency, which eventually carves ionized channels that might favor the escape of Lyman continuum radiation. The survival of some of the clusters would make them the progenitors of massive and relatively metal-poor globular clusters in the local universe. High-redshift galaxies Young star clusters Reionization Globular star clusters Astrophysics Adélaïde Claeyssens verfasserin aut Brian Welch verfasserin aut Angela Adamo verfasserin aut Dan Coe verfasserin aut Jose M. Diego verfasserin aut Guillaume Mahler verfasserin aut Gourav Khullar verfasserin aut Vasily Kokorev verfasserin aut Masamune Oguri verfasserin aut Swara Ravindranath verfasserin aut Lukas J. Furtak verfasserin aut Tiger Yu-Yang Hsiao verfasserin aut Abdurro’uf verfasserin aut Nir Mandelker verfasserin aut Gabriel Brammer verfasserin aut Larry D. Bradley verfasserin aut Maruša Bradač verfasserin aut Christopher J. Conselice verfasserin aut Pratika Dayal verfasserin aut Mario Nonino verfasserin aut Felipe Andrade-Santos verfasserin aut Rogier A. Windhorst verfasserin aut Nor Pirzkal verfasserin aut Keren Sharon verfasserin aut S. E. de Mink verfasserin aut Seiji Fujimoto verfasserin aut Adi Zitrin verfasserin aut Jan J. Eldridge verfasserin aut Colin Norman verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 945(2023), 1, p 53 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:945 year:2023 number:1, p 53 https://doi.org/10.3847/1538-4357/acb59a kostenfrei https://doaj.org/article/d99c6d5c826f4893af7675807cc56222 kostenfrei https://doi.org/10.3847/1538-4357/acb59a kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 945 2023 1, p 53
language	English
source	In The Astrophysical Journal 945(2023), 1, p 53 volume:945 year:2023 number:1, p 53
sourceStr	In The Astrophysical Journal 945(2023), 1, p 53 volume:945 year:2023 number:1, p 53
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	High-redshift galaxies Young star clusters Reionization Globular star clusters Astrophysics
isfreeaccess_bool	true
container_title	The Astrophysical Journal
authorswithroles_txt_mv	Eros Vanzella @@aut@@ Adélaïde Claeyssens @@aut@@ Brian Welch @@aut@@ Angela Adamo @@aut@@ Dan Coe @@aut@@ Jose M. Diego @@aut@@ Guillaume Mahler @@aut@@ Gourav Khullar @@aut@@ Vasily Kokorev @@aut@@ Masamune Oguri @@aut@@ Swara Ravindranath @@aut@@ Lukas J. Furtak @@aut@@ Tiger Yu-Yang Hsiao @@aut@@ Abdurro’uf @@aut@@ Nir Mandelker @@aut@@ Gabriel Brammer @@aut@@ Larry D. Bradley @@aut@@ Maruša Bradač @@aut@@ Christopher J. Conselice @@aut@@ Pratika Dayal @@aut@@ Mario Nonino @@aut@@ Felipe Andrade-Santos @@aut@@ Rogier A. Windhorst @@aut@@ Nor Pirzkal @@aut@@ Keren Sharon @@aut@@ S. E. de Mink @@aut@@ Seiji Fujimoto @@aut@@ Adi Zitrin @@aut@@ Jan J. Eldridge @@aut@@ Colin Norman @@aut@@
publishDateDaySort_date	2023-01-01T00:00:00Z
hierarchy_top_id	269019219
id	DOAJ089159241
language_de	englisch
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callnumber-first	Q - Science
author	Eros Vanzella
spellingShingle	Eros Vanzella misc QB460-466 misc High-redshift galaxies misc Young star clusters misc Reionization misc Globular star clusters misc Astrophysics JWST/NIRCam Probes Young Star Clusters in the Reionization Era Sunrise Arc
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topic_title	QB460-466 JWST/NIRCam Probes Young Star Clusters in the Reionization Era Sunrise Arc High-redshift galaxies Young star clusters Reionization Globular star clusters
topic	misc QB460-466 misc High-redshift galaxies misc Young star clusters misc Reionization misc Globular star clusters misc Astrophysics
topic_unstemmed	misc QB460-466 misc High-redshift galaxies misc Young star clusters misc Reionization misc Globular star clusters misc Astrophysics
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title	JWST/NIRCam Probes Young Star Clusters in the Reionization Era Sunrise Arc
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title_sort	jwst/nircam probes young star clusters in the reionization era sunrise arc
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title_auth	JWST/NIRCam Probes Young Star Clusters in the Reionization Era Sunrise Arc
abstract	Star cluster formation in the early universe and its contribution to reionization remains largely unconstrained to date. Here we present JWST/NIRCam imaging of the most highly magnified galaxy known at z ∼ 6, the Sunrise arc. We identify six young massive star clusters (YMCs) with measured radii spanning from ∼20 down to ∼1 pc (corrected for lensing magnification), estimated stellar masses of ∼10 ^6–7 M _⊙ , and ages of 1–30 Myr based on SED fitting to photometry measured in eight filters extending to rest frame 7000 Å. The resulting stellar mass surface densities are higher than 1000 M _⊙ pc ^−2 (up to a few 10 ^5 M _⊙ pc ^−2 ), and their inferred dynamical ages qualify the majority of these systems as gravitationally bound stellar clusters. The star cluster ages map the progression of star formation along the arc, with two evolved systems (≳10 Myr old) followed by very young clusters. The youngest stellar clusters (<5 Myr) show evidence of prominent H β +[O iii ] emission based on photometry with equivalent widths larger than <1000 Å rest frame and are hosted in a 200 pc sized star-forming complex. Such a region dominates the ionizing photon production with a high efficiency $\mathrm{log}({\xi }_{\mathrm{ion}}[\mathrm{Hz}\,{\mathrm{erg}}^{-1}])\sim 25.7$ . A significant fraction of the recently formed stellar mass of the galaxy (10%–30%) occurred in these YMCs. We speculate that such sources of ionizing radiation boost the ionizing photon production efficiency, which eventually carves ionized channels that might favor the escape of Lyman continuum radiation. The survival of some of the clusters would make them the progenitors of massive and relatively metal-poor globular clusters in the local universe.
abstractGer	Star cluster formation in the early universe and its contribution to reionization remains largely unconstrained to date. Here we present JWST/NIRCam imaging of the most highly magnified galaxy known at z ∼ 6, the Sunrise arc. We identify six young massive star clusters (YMCs) with measured radii spanning from ∼20 down to ∼1 pc (corrected for lensing magnification), estimated stellar masses of ∼10 ^6–7 M _⊙ , and ages of 1–30 Myr based on SED fitting to photometry measured in eight filters extending to rest frame 7000 Å. The resulting stellar mass surface densities are higher than 1000 M _⊙ pc ^−2 (up to a few 10 ^5 M _⊙ pc ^−2 ), and their inferred dynamical ages qualify the majority of these systems as gravitationally bound stellar clusters. The star cluster ages map the progression of star formation along the arc, with two evolved systems (≳10 Myr old) followed by very young clusters. The youngest stellar clusters (<5 Myr) show evidence of prominent H β +[O iii ] emission based on photometry with equivalent widths larger than <1000 Å rest frame and are hosted in a 200 pc sized star-forming complex. Such a region dominates the ionizing photon production with a high efficiency $\mathrm{log}({\xi }_{\mathrm{ion}}[\mathrm{Hz}\,{\mathrm{erg}}^{-1}])\sim 25.7$ . A significant fraction of the recently formed stellar mass of the galaxy (10%–30%) occurred in these YMCs. We speculate that such sources of ionizing radiation boost the ionizing photon production efficiency, which eventually carves ionized channels that might favor the escape of Lyman continuum radiation. The survival of some of the clusters would make them the progenitors of massive and relatively metal-poor globular clusters in the local universe.
abstract_unstemmed	Star cluster formation in the early universe and its contribution to reionization remains largely unconstrained to date. Here we present JWST/NIRCam imaging of the most highly magnified galaxy known at z ∼ 6, the Sunrise arc. We identify six young massive star clusters (YMCs) with measured radii spanning from ∼20 down to ∼1 pc (corrected for lensing magnification), estimated stellar masses of ∼10 ^6–7 M _⊙ , and ages of 1–30 Myr based on SED fitting to photometry measured in eight filters extending to rest frame 7000 Å. The resulting stellar mass surface densities are higher than 1000 M _⊙ pc ^−2 (up to a few 10 ^5 M _⊙ pc ^−2 ), and their inferred dynamical ages qualify the majority of these systems as gravitationally bound stellar clusters. The star cluster ages map the progression of star formation along the arc, with two evolved systems (≳10 Myr old) followed by very young clusters. The youngest stellar clusters (<5 Myr) show evidence of prominent H β +[O iii ] emission based on photometry with equivalent widths larger than <1000 Å rest frame and are hosted in a 200 pc sized star-forming complex. Such a region dominates the ionizing photon production with a high efficiency $\mathrm{log}({\xi }_{\mathrm{ion}}[\mathrm{Hz}\,{\mathrm{erg}}^{-1}])\sim 25.7$ . A significant fraction of the recently formed stellar mass of the galaxy (10%–30%) occurred in these YMCs. We speculate that such sources of ionizing radiation boost the ionizing photon production efficiency, which eventually carves ionized channels that might favor the escape of Lyman continuum radiation. The survival of some of the clusters would make them the progenitors of massive and relatively metal-poor globular clusters in the local universe.
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container_issue	1, p 53
title_short	JWST/NIRCam Probes Young Star Clusters in the Reionization Era Sunrise Arc
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author2Str	Adélaïde Claeyssens Brian Welch Angela Adamo Dan Coe Jose M. Diego Guillaume Mahler Gourav Khullar Vasily Kokorev Masamune Oguri Swara Ravindranath Lukas J. Furtak Tiger Yu-Yang Hsiao Abdurro’uf Nir Mandelker Gabriel Brammer Larry D. Bradley Maruša Bradač Christopher J. Conselice Pratika Dayal Mario Nonino Felipe Andrade-Santos Rogier A. Windhorst Nor Pirzkal Keren Sharon S. E. de Mink Seiji Fujimoto Adi Zitrin Jan J. Eldridge Colin Norman
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Here we present JWST/NIRCam imaging of the most highly magnified galaxy known at z ∼ 6, the Sunrise arc. We identify six young massive star clusters (YMCs) with measured radii spanning from ∼20 down to ∼1 pc (corrected for lensing magnification), estimated stellar masses of ∼10 ^6–7 M _⊙ , and ages of 1–30 Myr based on SED fitting to photometry measured in eight filters extending to rest frame 7000 Å. The resulting stellar mass surface densities are higher than 1000 M _⊙ pc ^−2 (up to a few 10 ^5 M _⊙ pc ^−2 ), and their inferred dynamical ages qualify the majority of these systems as gravitationally bound stellar clusters. The star cluster ages map the progression of star formation along the arc, with two evolved systems (≳10 Myr old) followed by very young clusters. The youngest stellar clusters (<5 Myr) show evidence of prominent H β +[O iii ] emission based on photometry with equivalent widths larger than <1000 Å rest frame and are hosted in a 200 pc sized star-forming complex. Such a region dominates the ionizing photon production with a high efficiency $\mathrm{log}({\xi }_{\mathrm{ion}}[\mathrm{Hz}\,{\mathrm{erg}}^{-1}])\sim 25.7$ . A significant fraction of the recently formed stellar mass of the galaxy (10%–30%) occurred in these YMCs. We speculate that such sources of ionizing radiation boost the ionizing photon production efficiency, which eventually carves ionized channels that might favor the escape of Lyman continuum radiation. 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JWST/NIRCam Probes Young Star Clusters in the Reionization Era Sunrise Arc

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