Dust and Cold Gas Properties of Starburst HyLIRG Quasars at z ∼ 2.5

Some high- z active galactic nuclei (AGNs) are found to reside in extreme star-forming galaxies, such as hyperluminous infrared galaxies (HyLIRGs), with AGN-removed L _IR of <10 ^13 L _⊙ . In this paper, we report NOEMA observations of six apparent starburst HyLIRGs associated with optical quasar...
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Autor*in:	Feng-Yuan Liu [verfasserIn] Y. Sophia Dai [verfasserIn] Alain Omont [verfasserIn] Daizhong Liu [verfasserIn] Pierre Cox [verfasserIn] Roberto Neri [verfasserIn] Melanie Krips [verfasserIn] Chentao Yang [verfasserIn] Xue-Bing Wu [verfasserIn] Jia-Sheng Huang [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2024

Schlagwörter:	Starburst galaxies CO line emission Millimeter-wave spectroscopy Interferometry Quasars Galaxy evolution

Übergeordnetes Werk:	In: The Astrophysical Journal - IOP Publishing, 2022, 964(2024), 2, p 136
Übergeordnetes Werk:	volume:964 ; year:2024 ; number:2, p 136

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3847/1538-4357/ad24fe

Katalog-ID:	DOAJ09139127X

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allfields	10.3847/1538-4357/ad24fe doi (DE-627)DOAJ09139127X (DE-599)DOAJ5e82a80606ed4eb6ac5167e0c05b277b DE-627 ger DE-627 rakwb eng QB460-466 Feng-Yuan Liu verfasserin aut Dust and Cold Gas Properties of Starburst HyLIRG Quasars at z ∼ 2.5 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Some high- z active galactic nuclei (AGNs) are found to reside in extreme star-forming galaxies, such as hyperluminous infrared galaxies (HyLIRGs), with AGN-removed L _IR of <10 ^13 L _⊙ . In this paper, we report NOEMA observations of six apparent starburst HyLIRGs associated with optical quasars at z ∼ 2–3 in the Stripe 82 field, to study their dust and molecular CO properties. Five out of the six candidates are detected with CO(4–3) or CO(5–4) emission, and four in the 2 mm dust continuum. Based on the linewidth– ${L}_{\mathrm{CO}(1-0)}^{{\prime} }$ diagnostics, we find that four galaxies are likely unlensed or weakly lensed sources. The molecular gas mass is in the range of $\mu {M}_{{{\rm{H}}}_{2}}\,\sim 0.8\mbox{-}9.7\times {10}^{10}\,{M}_{\odot }$ (with $\alpha =0.8\,{M}_{\odot }{\left({\rm{K}}\,\mathrm{km}\,{{\rm{s}}}^{-1}\,{\mathrm{pc}}^{2}\right)}^{-1}$ , where μ is the unknown possible gravitational magnification factor). We fit their spectral energy distributions, after including the observed 2 mm fluxes and upper limits, and estimate their apparent (uncorrected for possible lensing effects) star formation rates ( μ SFRs) to be ∼400–2500 M _⊙ yr ^−1 , with a depletion time of ∼20–110 Myr. We notice interesting offsets, of ∼10–40 kpc spatially or ∼1000–2000 km s ^−1 spectroscopically, between the optical quasar and the millimeter continuum or CO emissions. The observed velocity shift is likely related to the blueshifted broad-emission-line region of quasars, though mergers or recoiling black holes are also possible causes, which can explain the spatial offsets and the high intrinsic star formation rates in the HyLIRG quasar systems. Starburst galaxies CO line emission Millimeter-wave spectroscopy Interferometry Quasars Galaxy evolution Astrophysics Y. Sophia Dai verfasserin aut Alain Omont verfasserin aut Daizhong Liu verfasserin aut Pierre Cox verfasserin aut Roberto Neri verfasserin aut Melanie Krips verfasserin aut Chentao Yang verfasserin aut Xue-Bing Wu verfasserin aut Jia-Sheng Huang verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 964(2024), 2, p 136 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:964 year:2024 number:2, p 136 https://doi.org/10.3847/1538-4357/ad24fe kostenfrei https://doaj.org/article/5e82a80606ed4eb6ac5167e0c05b277b kostenfrei https://doi.org/10.3847/1538-4357/ad24fe 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 964 2024 2, p 136
spelling	10.3847/1538-4357/ad24fe doi (DE-627)DOAJ09139127X (DE-599)DOAJ5e82a80606ed4eb6ac5167e0c05b277b DE-627 ger DE-627 rakwb eng QB460-466 Feng-Yuan Liu verfasserin aut Dust and Cold Gas Properties of Starburst HyLIRG Quasars at z ∼ 2.5 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Some high- z active galactic nuclei (AGNs) are found to reside in extreme star-forming galaxies, such as hyperluminous infrared galaxies (HyLIRGs), with AGN-removed L _IR of <10 ^13 L _⊙ . In this paper, we report NOEMA observations of six apparent starburst HyLIRGs associated with optical quasars at z ∼ 2–3 in the Stripe 82 field, to study their dust and molecular CO properties. Five out of the six candidates are detected with CO(4–3) or CO(5–4) emission, and four in the 2 mm dust continuum. Based on the linewidth– ${L}_{\mathrm{CO}(1-0)}^{{\prime} }$ diagnostics, we find that four galaxies are likely unlensed or weakly lensed sources. The molecular gas mass is in the range of $\mu {M}_{{{\rm{H}}}_{2}}\,\sim 0.8\mbox{-}9.7\times {10}^{10}\,{M}_{\odot }$ (with $\alpha =0.8\,{M}_{\odot }{\left({\rm{K}}\,\mathrm{km}\,{{\rm{s}}}^{-1}\,{\mathrm{pc}}^{2}\right)}^{-1}$ , where μ is the unknown possible gravitational magnification factor). We fit their spectral energy distributions, after including the observed 2 mm fluxes and upper limits, and estimate their apparent (uncorrected for possible lensing effects) star formation rates ( μ SFRs) to be ∼400–2500 M _⊙ yr ^−1 , with a depletion time of ∼20–110 Myr. We notice interesting offsets, of ∼10–40 kpc spatially or ∼1000–2000 km s ^−1 spectroscopically, between the optical quasar and the millimeter continuum or CO emissions. The observed velocity shift is likely related to the blueshifted broad-emission-line region of quasars, though mergers or recoiling black holes are also possible causes, which can explain the spatial offsets and the high intrinsic star formation rates in the HyLIRG quasar systems. Starburst galaxies CO line emission Millimeter-wave spectroscopy Interferometry Quasars Galaxy evolution Astrophysics Y. Sophia Dai verfasserin aut Alain Omont verfasserin aut Daizhong Liu verfasserin aut Pierre Cox verfasserin aut Roberto Neri verfasserin aut Melanie Krips verfasserin aut Chentao Yang verfasserin aut Xue-Bing Wu verfasserin aut Jia-Sheng Huang verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 964(2024), 2, p 136 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:964 year:2024 number:2, p 136 https://doi.org/10.3847/1538-4357/ad24fe kostenfrei https://doaj.org/article/5e82a80606ed4eb6ac5167e0c05b277b kostenfrei https://doi.org/10.3847/1538-4357/ad24fe 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 964 2024 2, p 136
allfields_unstemmed	10.3847/1538-4357/ad24fe doi (DE-627)DOAJ09139127X (DE-599)DOAJ5e82a80606ed4eb6ac5167e0c05b277b DE-627 ger DE-627 rakwb eng QB460-466 Feng-Yuan Liu verfasserin aut Dust and Cold Gas Properties of Starburst HyLIRG Quasars at z ∼ 2.5 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Some high- z active galactic nuclei (AGNs) are found to reside in extreme star-forming galaxies, such as hyperluminous infrared galaxies (HyLIRGs), with AGN-removed L _IR of <10 ^13 L _⊙ . In this paper, we report NOEMA observations of six apparent starburst HyLIRGs associated with optical quasars at z ∼ 2–3 in the Stripe 82 field, to study their dust and molecular CO properties. Five out of the six candidates are detected with CO(4–3) or CO(5–4) emission, and four in the 2 mm dust continuum. Based on the linewidth– ${L}_{\mathrm{CO}(1-0)}^{{\prime} }$ diagnostics, we find that four galaxies are likely unlensed or weakly lensed sources. The molecular gas mass is in the range of $\mu {M}_{{{\rm{H}}}_{2}}\,\sim 0.8\mbox{-}9.7\times {10}^{10}\,{M}_{\odot }$ (with $\alpha =0.8\,{M}_{\odot }{\left({\rm{K}}\,\mathrm{km}\,{{\rm{s}}}^{-1}\,{\mathrm{pc}}^{2}\right)}^{-1}$ , where μ is the unknown possible gravitational magnification factor). We fit their spectral energy distributions, after including the observed 2 mm fluxes and upper limits, and estimate their apparent (uncorrected for possible lensing effects) star formation rates ( μ SFRs) to be ∼400–2500 M _⊙ yr ^−1 , with a depletion time of ∼20–110 Myr. We notice interesting offsets, of ∼10–40 kpc spatially or ∼1000–2000 km s ^−1 spectroscopically, between the optical quasar and the millimeter continuum or CO emissions. The observed velocity shift is likely related to the blueshifted broad-emission-line region of quasars, though mergers or recoiling black holes are also possible causes, which can explain the spatial offsets and the high intrinsic star formation rates in the HyLIRG quasar systems. Starburst galaxies CO line emission Millimeter-wave spectroscopy Interferometry Quasars Galaxy evolution Astrophysics Y. Sophia Dai verfasserin aut Alain Omont verfasserin aut Daizhong Liu verfasserin aut Pierre Cox verfasserin aut Roberto Neri verfasserin aut Melanie Krips verfasserin aut Chentao Yang verfasserin aut Xue-Bing Wu verfasserin aut Jia-Sheng Huang verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 964(2024), 2, p 136 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:964 year:2024 number:2, p 136 https://doi.org/10.3847/1538-4357/ad24fe kostenfrei https://doaj.org/article/5e82a80606ed4eb6ac5167e0c05b277b kostenfrei https://doi.org/10.3847/1538-4357/ad24fe 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 964 2024 2, p 136
allfieldsGer	10.3847/1538-4357/ad24fe doi (DE-627)DOAJ09139127X (DE-599)DOAJ5e82a80606ed4eb6ac5167e0c05b277b DE-627 ger DE-627 rakwb eng QB460-466 Feng-Yuan Liu verfasserin aut Dust and Cold Gas Properties of Starburst HyLIRG Quasars at z ∼ 2.5 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Some high- z active galactic nuclei (AGNs) are found to reside in extreme star-forming galaxies, such as hyperluminous infrared galaxies (HyLIRGs), with AGN-removed L _IR of <10 ^13 L _⊙ . In this paper, we report NOEMA observations of six apparent starburst HyLIRGs associated with optical quasars at z ∼ 2–3 in the Stripe 82 field, to study their dust and molecular CO properties. Five out of the six candidates are detected with CO(4–3) or CO(5–4) emission, and four in the 2 mm dust continuum. Based on the linewidth– ${L}_{\mathrm{CO}(1-0)}^{{\prime} }$ diagnostics, we find that four galaxies are likely unlensed or weakly lensed sources. The molecular gas mass is in the range of $\mu {M}_{{{\rm{H}}}_{2}}\,\sim 0.8\mbox{-}9.7\times {10}^{10}\,{M}_{\odot }$ (with $\alpha =0.8\,{M}_{\odot }{\left({\rm{K}}\,\mathrm{km}\,{{\rm{s}}}^{-1}\,{\mathrm{pc}}^{2}\right)}^{-1}$ , where μ is the unknown possible gravitational magnification factor). We fit their spectral energy distributions, after including the observed 2 mm fluxes and upper limits, and estimate their apparent (uncorrected for possible lensing effects) star formation rates ( μ SFRs) to be ∼400–2500 M _⊙ yr ^−1 , with a depletion time of ∼20–110 Myr. We notice interesting offsets, of ∼10–40 kpc spatially or ∼1000–2000 km s ^−1 spectroscopically, between the optical quasar and the millimeter continuum or CO emissions. The observed velocity shift is likely related to the blueshifted broad-emission-line region of quasars, though mergers or recoiling black holes are also possible causes, which can explain the spatial offsets and the high intrinsic star formation rates in the HyLIRG quasar systems. Starburst galaxies CO line emission Millimeter-wave spectroscopy Interferometry Quasars Galaxy evolution Astrophysics Y. Sophia Dai verfasserin aut Alain Omont verfasserin aut Daizhong Liu verfasserin aut Pierre Cox verfasserin aut Roberto Neri verfasserin aut Melanie Krips verfasserin aut Chentao Yang verfasserin aut Xue-Bing Wu verfasserin aut Jia-Sheng Huang verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 964(2024), 2, p 136 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:964 year:2024 number:2, p 136 https://doi.org/10.3847/1538-4357/ad24fe kostenfrei https://doaj.org/article/5e82a80606ed4eb6ac5167e0c05b277b kostenfrei https://doi.org/10.3847/1538-4357/ad24fe 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 964 2024 2, p 136
allfieldsSound	10.3847/1538-4357/ad24fe doi (DE-627)DOAJ09139127X (DE-599)DOAJ5e82a80606ed4eb6ac5167e0c05b277b DE-627 ger DE-627 rakwb eng QB460-466 Feng-Yuan Liu verfasserin aut Dust and Cold Gas Properties of Starburst HyLIRG Quasars at z ∼ 2.5 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Some high- z active galactic nuclei (AGNs) are found to reside in extreme star-forming galaxies, such as hyperluminous infrared galaxies (HyLIRGs), with AGN-removed L _IR of <10 ^13 L _⊙ . In this paper, we report NOEMA observations of six apparent starburst HyLIRGs associated with optical quasars at z ∼ 2–3 in the Stripe 82 field, to study their dust and molecular CO properties. Five out of the six candidates are detected with CO(4–3) or CO(5–4) emission, and four in the 2 mm dust continuum. Based on the linewidth– ${L}_{\mathrm{CO}(1-0)}^{{\prime} }$ diagnostics, we find that four galaxies are likely unlensed or weakly lensed sources. The molecular gas mass is in the range of $\mu {M}_{{{\rm{H}}}_{2}}\,\sim 0.8\mbox{-}9.7\times {10}^{10}\,{M}_{\odot }$ (with $\alpha =0.8\,{M}_{\odot }{\left({\rm{K}}\,\mathrm{km}\,{{\rm{s}}}^{-1}\,{\mathrm{pc}}^{2}\right)}^{-1}$ , where μ is the unknown possible gravitational magnification factor). We fit their spectral energy distributions, after including the observed 2 mm fluxes and upper limits, and estimate their apparent (uncorrected for possible lensing effects) star formation rates ( μ SFRs) to be ∼400–2500 M _⊙ yr ^−1 , with a depletion time of ∼20–110 Myr. We notice interesting offsets, of ∼10–40 kpc spatially or ∼1000–2000 km s ^−1 spectroscopically, between the optical quasar and the millimeter continuum or CO emissions. The observed velocity shift is likely related to the blueshifted broad-emission-line region of quasars, though mergers or recoiling black holes are also possible causes, which can explain the spatial offsets and the high intrinsic star formation rates in the HyLIRG quasar systems. Starburst galaxies CO line emission Millimeter-wave spectroscopy Interferometry Quasars Galaxy evolution Astrophysics Y. Sophia Dai verfasserin aut Alain Omont verfasserin aut Daizhong Liu verfasserin aut Pierre Cox verfasserin aut Roberto Neri verfasserin aut Melanie Krips verfasserin aut Chentao Yang verfasserin aut Xue-Bing Wu verfasserin aut Jia-Sheng Huang verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 964(2024), 2, p 136 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:964 year:2024 number:2, p 136 https://doi.org/10.3847/1538-4357/ad24fe kostenfrei https://doaj.org/article/5e82a80606ed4eb6ac5167e0c05b277b kostenfrei https://doi.org/10.3847/1538-4357/ad24fe 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 964 2024 2, p 136
language	English
source	In The Astrophysical Journal 964(2024), 2, p 136 volume:964 year:2024 number:2, p 136
sourceStr	In The Astrophysical Journal 964(2024), 2, p 136 volume:964 year:2024 number:2, p 136
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Starburst galaxies CO line emission Millimeter-wave spectroscopy Interferometry Quasars Galaxy evolution Astrophysics
isfreeaccess_bool	true
container_title	The Astrophysical Journal
authorswithroles_txt_mv	Feng-Yuan Liu @@aut@@ Y. Sophia Dai @@aut@@ Alain Omont @@aut@@ Daizhong Liu @@aut@@ Pierre Cox @@aut@@ Roberto Neri @@aut@@ Melanie Krips @@aut@@ Chentao Yang @@aut@@ Xue-Bing Wu @@aut@@ Jia-Sheng Huang @@aut@@
publishDateDaySort_date	2024-01-01T00:00:00Z
hierarchy_top_id	269019219
id	DOAJ09139127X
language_de	englisch
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callnumber-first	Q - Science
author	Feng-Yuan Liu
spellingShingle	Feng-Yuan Liu misc QB460-466 misc Starburst galaxies misc CO line emission misc Millimeter-wave spectroscopy misc Interferometry misc Quasars misc Galaxy evolution misc Astrophysics Dust and Cold Gas Properties of Starburst HyLIRG Quasars at z ∼ 2.5
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topic_title	QB460-466 Dust and Cold Gas Properties of Starburst HyLIRG Quasars at z ∼ 2.5 Starburst galaxies CO line emission Millimeter-wave spectroscopy Interferometry Quasars Galaxy evolution
topic	misc QB460-466 misc Starburst galaxies misc CO line emission misc Millimeter-wave spectroscopy misc Interferometry misc Quasars misc Galaxy evolution misc Astrophysics
topic_unstemmed	misc QB460-466 misc Starburst galaxies misc CO line emission misc Millimeter-wave spectroscopy misc Interferometry misc Quasars misc Galaxy evolution misc Astrophysics
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title	Dust and Cold Gas Properties of Starburst HyLIRG Quasars at z ∼ 2.5
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title_full	Dust and Cold Gas Properties of Starburst HyLIRG Quasars at z ∼ 2.5
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author_browse	Feng-Yuan Liu Y. Sophia Dai Alain Omont Daizhong Liu Pierre Cox Roberto Neri Melanie Krips Chentao Yang Xue-Bing Wu Jia-Sheng Huang
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title_sort	dust and cold gas properties of starburst hylirg quasars at z ∼ 2.5
callnumber	QB460-466
title_auth	Dust and Cold Gas Properties of Starburst HyLIRG Quasars at z ∼ 2.5
abstract	Some high- z active galactic nuclei (AGNs) are found to reside in extreme star-forming galaxies, such as hyperluminous infrared galaxies (HyLIRGs), with AGN-removed L _IR of <10 ^13 L _⊙ . In this paper, we report NOEMA observations of six apparent starburst HyLIRGs associated with optical quasars at z ∼ 2–3 in the Stripe 82 field, to study their dust and molecular CO properties. Five out of the six candidates are detected with CO(4–3) or CO(5–4) emission, and four in the 2 mm dust continuum. Based on the linewidth– ${L}_{\mathrm{CO}(1-0)}^{{\prime} }$ diagnostics, we find that four galaxies are likely unlensed or weakly lensed sources. The molecular gas mass is in the range of $\mu {M}_{{{\rm{H}}}_{2}}\,\sim 0.8\mbox{-}9.7\times {10}^{10}\,{M}_{\odot }$ (with $\alpha =0.8\,{M}_{\odot }{\left({\rm{K}}\,\mathrm{km}\,{{\rm{s}}}^{-1}\,{\mathrm{pc}}^{2}\right)}^{-1}$ , where μ is the unknown possible gravitational magnification factor). We fit their spectral energy distributions, after including the observed 2 mm fluxes and upper limits, and estimate their apparent (uncorrected for possible lensing effects) star formation rates ( μ SFRs) to be ∼400–2500 M _⊙ yr ^−1 , with a depletion time of ∼20–110 Myr. We notice interesting offsets, of ∼10–40 kpc spatially or ∼1000–2000 km s ^−1 spectroscopically, between the optical quasar and the millimeter continuum or CO emissions. The observed velocity shift is likely related to the blueshifted broad-emission-line region of quasars, though mergers or recoiling black holes are also possible causes, which can explain the spatial offsets and the high intrinsic star formation rates in the HyLIRG quasar systems.
abstractGer	Some high- z active galactic nuclei (AGNs) are found to reside in extreme star-forming galaxies, such as hyperluminous infrared galaxies (HyLIRGs), with AGN-removed L _IR of <10 ^13 L _⊙ . In this paper, we report NOEMA observations of six apparent starburst HyLIRGs associated with optical quasars at z ∼ 2–3 in the Stripe 82 field, to study their dust and molecular CO properties. Five out of the six candidates are detected with CO(4–3) or CO(5–4) emission, and four in the 2 mm dust continuum. Based on the linewidth– ${L}_{\mathrm{CO}(1-0)}^{{\prime} }$ diagnostics, we find that four galaxies are likely unlensed or weakly lensed sources. The molecular gas mass is in the range of $\mu {M}_{{{\rm{H}}}_{2}}\,\sim 0.8\mbox{-}9.7\times {10}^{10}\,{M}_{\odot }$ (with $\alpha =0.8\,{M}_{\odot }{\left({\rm{K}}\,\mathrm{km}\,{{\rm{s}}}^{-1}\,{\mathrm{pc}}^{2}\right)}^{-1}$ , where μ is the unknown possible gravitational magnification factor). We fit their spectral energy distributions, after including the observed 2 mm fluxes and upper limits, and estimate their apparent (uncorrected for possible lensing effects) star formation rates ( μ SFRs) to be ∼400–2500 M _⊙ yr ^−1 , with a depletion time of ∼20–110 Myr. We notice interesting offsets, of ∼10–40 kpc spatially or ∼1000–2000 km s ^−1 spectroscopically, between the optical quasar and the millimeter continuum or CO emissions. The observed velocity shift is likely related to the blueshifted broad-emission-line region of quasars, though mergers or recoiling black holes are also possible causes, which can explain the spatial offsets and the high intrinsic star formation rates in the HyLIRG quasar systems.
abstract_unstemmed	Some high- z active galactic nuclei (AGNs) are found to reside in extreme star-forming galaxies, such as hyperluminous infrared galaxies (HyLIRGs), with AGN-removed L _IR of <10 ^13 L _⊙ . In this paper, we report NOEMA observations of six apparent starburst HyLIRGs associated with optical quasars at z ∼ 2–3 in the Stripe 82 field, to study their dust and molecular CO properties. Five out of the six candidates are detected with CO(4–3) or CO(5–4) emission, and four in the 2 mm dust continuum. Based on the linewidth– ${L}_{\mathrm{CO}(1-0)}^{{\prime} }$ diagnostics, we find that four galaxies are likely unlensed or weakly lensed sources. The molecular gas mass is in the range of $\mu {M}_{{{\rm{H}}}_{2}}\,\sim 0.8\mbox{-}9.7\times {10}^{10}\,{M}_{\odot }$ (with $\alpha =0.8\,{M}_{\odot }{\left({\rm{K}}\,\mathrm{km}\,{{\rm{s}}}^{-1}\,{\mathrm{pc}}^{2}\right)}^{-1}$ , where μ is the unknown possible gravitational magnification factor). We fit their spectral energy distributions, after including the observed 2 mm fluxes and upper limits, and estimate their apparent (uncorrected for possible lensing effects) star formation rates ( μ SFRs) to be ∼400–2500 M _⊙ yr ^−1 , with a depletion time of ∼20–110 Myr. We notice interesting offsets, of ∼10–40 kpc spatially or ∼1000–2000 km s ^−1 spectroscopically, between the optical quasar and the millimeter continuum or CO emissions. The observed velocity shift is likely related to the blueshifted broad-emission-line region of quasars, though mergers or recoiling black holes are also possible causes, which can explain the spatial offsets and the high intrinsic star formation rates in the HyLIRG quasar systems.
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container_issue	2, p 136
title_short	Dust and Cold Gas Properties of Starburst HyLIRG Quasars at z ∼ 2.5
url	https://doi.org/10.3847/1538-4357/ad24fe https://doaj.org/article/5e82a80606ed4eb6ac5167e0c05b277b https://doaj.org/toc/1538-4357
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Dust and Cold Gas Properties of Starburst HyLIRG Quasars at z ∼ 2.5

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