Multiple Emission Lines of Hα Emitters at z ∼ 2.3 from the Broad- and Medium-band Photometry in the ZFOURGE Survey

We present a multiple emission line study of ∼1300 H α emitters (HAEs) at z ∼ 2.3 in the ZFOURGE survey. In contrast to the traditional spectroscopic method, our sample is selected based on the flux excess in the ZFOURGE K _s broadband data relative to the best-fit stellar continuum. Using the same...
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Autor*in:	Nuo Chen [verfasserIn] Kentaro Motohara [verfasserIn] Lee Spitler [verfasserIn] Kimihiko Nakajima [verfasserIn] Rieko Momose [verfasserIn] Tadayuki Kodama [verfasserIn] Masahiro Konishi [verfasserIn] Hidenori Takahashi [verfasserIn] Kosuke Kushibiki [verfasserIn] Yukihiro Kono [verfasserIn] Yasunori Terao [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2024

Schlagwörter:	High-redshift galaxies Emission line galaxies Galaxy evolution

Übergeordnetes Werk:	In: The Astrophysical Journal - IOP Publishing, 2022, 964(2024), 1, p 5
Übergeordnetes Werk:	volume:964 ; year:2024 ; number:1, p 5

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3847/1538-4357/ad20cc

Katalog-ID:	DOAJ092278493

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520			\|a We present a multiple emission line study of ∼1300 H α emitters (HAEs) at z ∼ 2.3 in the ZFOURGE survey. In contrast to the traditional spectroscopic method, our sample is selected based on the flux excess in the ZFOURGE K _s broadband data relative to the best-fit stellar continuum. Using the same method, we also extract the strong diagnostic emission lines for these individual HAEs: [O iii ] λ λ 4959, 5007 and [O ii ] λ λ 3726, 3729. Our measurements demonstrate good consistency with those obtained from spectroscopic surveys. We investigate the relationship between the equivalent widths (EWs) of these emission lines and various galaxy properties, including stellar mass, stellar age, star formation rate, specific star formation rate, and ionization state (O32). We have identified a discrepancy between HAEs at z ∼ 2.3 and typical local star-forming galaxies observed in the Sloan Digital Sky Survey, suggesting the evolution of lower gas-phase metallicity ( Z ) and higher ionization parameters ( U ) with redshift. Notably, we have observed a significant number of low-mass HAEs exhibiting exceptionally high EW _[O _iii _] . Their galaxy properties are comparable to those of extreme objects, such as extreme O3 emitters and Ly α emitters at z ≃ 2–3. Considering that these characteristics may indicate potential strong Lyman continuum leakage, higher-redshift analogs of the low-mass HAEs could be significant contributors to the cosmic reionization. Further investigations of this particular population are required to gain a clearer understanding of galaxy evolution and cosmic reionization.
650		4	\|a High-redshift galaxies
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allfields	10.3847/1538-4357/ad20cc doi (DE-627)DOAJ092278493 (DE-599)DOAJ172a1da6d4fa42d1854c5b29f22231c1 DE-627 ger DE-627 rakwb eng QB460-466 Nuo Chen verfasserin aut Multiple Emission Lines of Hα Emitters at z ∼ 2.3 from the Broad- and Medium-band Photometry in the ZFOURGE Survey 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present a multiple emission line study of ∼1300 H α emitters (HAEs) at z ∼ 2.3 in the ZFOURGE survey. In contrast to the traditional spectroscopic method, our sample is selected based on the flux excess in the ZFOURGE K _s broadband data relative to the best-fit stellar continuum. Using the same method, we also extract the strong diagnostic emission lines for these individual HAEs: [O iii ] λ λ 4959, 5007 and [O ii ] λ λ 3726, 3729. Our measurements demonstrate good consistency with those obtained from spectroscopic surveys. We investigate the relationship between the equivalent widths (EWs) of these emission lines and various galaxy properties, including stellar mass, stellar age, star formation rate, specific star formation rate, and ionization state (O32). We have identified a discrepancy between HAEs at z ∼ 2.3 and typical local star-forming galaxies observed in the Sloan Digital Sky Survey, suggesting the evolution of lower gas-phase metallicity ( Z ) and higher ionization parameters ( U ) with redshift. Notably, we have observed a significant number of low-mass HAEs exhibiting exceptionally high EW _[O _iii _] . Their galaxy properties are comparable to those of extreme objects, such as extreme O3 emitters and Ly α emitters at z ≃ 2–3. Considering that these characteristics may indicate potential strong Lyman continuum leakage, higher-redshift analogs of the low-mass HAEs could be significant contributors to the cosmic reionization. Further investigations of this particular population are required to gain a clearer understanding of galaxy evolution and cosmic reionization. High-redshift galaxies Emission line galaxies Galaxy evolution Astrophysics Kentaro Motohara verfasserin aut Lee Spitler verfasserin aut Kimihiko Nakajima verfasserin aut Rieko Momose verfasserin aut Tadayuki Kodama verfasserin aut Masahiro Konishi verfasserin aut Hidenori Takahashi verfasserin aut Kosuke Kushibiki verfasserin aut Yukihiro Kono verfasserin aut Yasunori Terao verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 964(2024), 1, p 5 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:964 year:2024 number:1, p 5 https://doi.org/10.3847/1538-4357/ad20cc kostenfrei https://doaj.org/article/172a1da6d4fa42d1854c5b29f22231c1 kostenfrei https://doi.org/10.3847/1538-4357/ad20cc 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 1, p 5
spelling	10.3847/1538-4357/ad20cc doi (DE-627)DOAJ092278493 (DE-599)DOAJ172a1da6d4fa42d1854c5b29f22231c1 DE-627 ger DE-627 rakwb eng QB460-466 Nuo Chen verfasserin aut Multiple Emission Lines of Hα Emitters at z ∼ 2.3 from the Broad- and Medium-band Photometry in the ZFOURGE Survey 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present a multiple emission line study of ∼1300 H α emitters (HAEs) at z ∼ 2.3 in the ZFOURGE survey. In contrast to the traditional spectroscopic method, our sample is selected based on the flux excess in the ZFOURGE K _s broadband data relative to the best-fit stellar continuum. Using the same method, we also extract the strong diagnostic emission lines for these individual HAEs: [O iii ] λ λ 4959, 5007 and [O ii ] λ λ 3726, 3729. Our measurements demonstrate good consistency with those obtained from spectroscopic surveys. We investigate the relationship between the equivalent widths (EWs) of these emission lines and various galaxy properties, including stellar mass, stellar age, star formation rate, specific star formation rate, and ionization state (O32). We have identified a discrepancy between HAEs at z ∼ 2.3 and typical local star-forming galaxies observed in the Sloan Digital Sky Survey, suggesting the evolution of lower gas-phase metallicity ( Z ) and higher ionization parameters ( U ) with redshift. Notably, we have observed a significant number of low-mass HAEs exhibiting exceptionally high EW _[O _iii _] . Their galaxy properties are comparable to those of extreme objects, such as extreme O3 emitters and Ly α emitters at z ≃ 2–3. Considering that these characteristics may indicate potential strong Lyman continuum leakage, higher-redshift analogs of the low-mass HAEs could be significant contributors to the cosmic reionization. Further investigations of this particular population are required to gain a clearer understanding of galaxy evolution and cosmic reionization. High-redshift galaxies Emission line galaxies Galaxy evolution Astrophysics Kentaro Motohara verfasserin aut Lee Spitler verfasserin aut Kimihiko Nakajima verfasserin aut Rieko Momose verfasserin aut Tadayuki Kodama verfasserin aut Masahiro Konishi verfasserin aut Hidenori Takahashi verfasserin aut Kosuke Kushibiki verfasserin aut Yukihiro Kono verfasserin aut Yasunori Terao verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 964(2024), 1, p 5 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:964 year:2024 number:1, p 5 https://doi.org/10.3847/1538-4357/ad20cc kostenfrei https://doaj.org/article/172a1da6d4fa42d1854c5b29f22231c1 kostenfrei https://doi.org/10.3847/1538-4357/ad20cc 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 1, p 5
allfields_unstemmed	10.3847/1538-4357/ad20cc doi (DE-627)DOAJ092278493 (DE-599)DOAJ172a1da6d4fa42d1854c5b29f22231c1 DE-627 ger DE-627 rakwb eng QB460-466 Nuo Chen verfasserin aut Multiple Emission Lines of Hα Emitters at z ∼ 2.3 from the Broad- and Medium-band Photometry in the ZFOURGE Survey 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present a multiple emission line study of ∼1300 H α emitters (HAEs) at z ∼ 2.3 in the ZFOURGE survey. In contrast to the traditional spectroscopic method, our sample is selected based on the flux excess in the ZFOURGE K _s broadband data relative to the best-fit stellar continuum. Using the same method, we also extract the strong diagnostic emission lines for these individual HAEs: [O iii ] λ λ 4959, 5007 and [O ii ] λ λ 3726, 3729. Our measurements demonstrate good consistency with those obtained from spectroscopic surveys. We investigate the relationship between the equivalent widths (EWs) of these emission lines and various galaxy properties, including stellar mass, stellar age, star formation rate, specific star formation rate, and ionization state (O32). We have identified a discrepancy between HAEs at z ∼ 2.3 and typical local star-forming galaxies observed in the Sloan Digital Sky Survey, suggesting the evolution of lower gas-phase metallicity ( Z ) and higher ionization parameters ( U ) with redshift. Notably, we have observed a significant number of low-mass HAEs exhibiting exceptionally high EW _[O _iii _] . Their galaxy properties are comparable to those of extreme objects, such as extreme O3 emitters and Ly α emitters at z ≃ 2–3. Considering that these characteristics may indicate potential strong Lyman continuum leakage, higher-redshift analogs of the low-mass HAEs could be significant contributors to the cosmic reionization. Further investigations of this particular population are required to gain a clearer understanding of galaxy evolution and cosmic reionization. High-redshift galaxies Emission line galaxies Galaxy evolution Astrophysics Kentaro Motohara verfasserin aut Lee Spitler verfasserin aut Kimihiko Nakajima verfasserin aut Rieko Momose verfasserin aut Tadayuki Kodama verfasserin aut Masahiro Konishi verfasserin aut Hidenori Takahashi verfasserin aut Kosuke Kushibiki verfasserin aut Yukihiro Kono verfasserin aut Yasunori Terao verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 964(2024), 1, p 5 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:964 year:2024 number:1, p 5 https://doi.org/10.3847/1538-4357/ad20cc kostenfrei https://doaj.org/article/172a1da6d4fa42d1854c5b29f22231c1 kostenfrei https://doi.org/10.3847/1538-4357/ad20cc 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 1, p 5
allfieldsGer	10.3847/1538-4357/ad20cc doi (DE-627)DOAJ092278493 (DE-599)DOAJ172a1da6d4fa42d1854c5b29f22231c1 DE-627 ger DE-627 rakwb eng QB460-466 Nuo Chen verfasserin aut Multiple Emission Lines of Hα Emitters at z ∼ 2.3 from the Broad- and Medium-band Photometry in the ZFOURGE Survey 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present a multiple emission line study of ∼1300 H α emitters (HAEs) at z ∼ 2.3 in the ZFOURGE survey. In contrast to the traditional spectroscopic method, our sample is selected based on the flux excess in the ZFOURGE K _s broadband data relative to the best-fit stellar continuum. Using the same method, we also extract the strong diagnostic emission lines for these individual HAEs: [O iii ] λ λ 4959, 5007 and [O ii ] λ λ 3726, 3729. Our measurements demonstrate good consistency with those obtained from spectroscopic surveys. We investigate the relationship between the equivalent widths (EWs) of these emission lines and various galaxy properties, including stellar mass, stellar age, star formation rate, specific star formation rate, and ionization state (O32). We have identified a discrepancy between HAEs at z ∼ 2.3 and typical local star-forming galaxies observed in the Sloan Digital Sky Survey, suggesting the evolution of lower gas-phase metallicity ( Z ) and higher ionization parameters ( U ) with redshift. Notably, we have observed a significant number of low-mass HAEs exhibiting exceptionally high EW _[O _iii _] . Their galaxy properties are comparable to those of extreme objects, such as extreme O3 emitters and Ly α emitters at z ≃ 2–3. Considering that these characteristics may indicate potential strong Lyman continuum leakage, higher-redshift analogs of the low-mass HAEs could be significant contributors to the cosmic reionization. Further investigations of this particular population are required to gain a clearer understanding of galaxy evolution and cosmic reionization. High-redshift galaxies Emission line galaxies Galaxy evolution Astrophysics Kentaro Motohara verfasserin aut Lee Spitler verfasserin aut Kimihiko Nakajima verfasserin aut Rieko Momose verfasserin aut Tadayuki Kodama verfasserin aut Masahiro Konishi verfasserin aut Hidenori Takahashi verfasserin aut Kosuke Kushibiki verfasserin aut Yukihiro Kono verfasserin aut Yasunori Terao verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 964(2024), 1, p 5 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:964 year:2024 number:1, p 5 https://doi.org/10.3847/1538-4357/ad20cc kostenfrei https://doaj.org/article/172a1da6d4fa42d1854c5b29f22231c1 kostenfrei https://doi.org/10.3847/1538-4357/ad20cc 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 1, p 5
allfieldsSound	10.3847/1538-4357/ad20cc doi (DE-627)DOAJ092278493 (DE-599)DOAJ172a1da6d4fa42d1854c5b29f22231c1 DE-627 ger DE-627 rakwb eng QB460-466 Nuo Chen verfasserin aut Multiple Emission Lines of Hα Emitters at z ∼ 2.3 from the Broad- and Medium-band Photometry in the ZFOURGE Survey 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present a multiple emission line study of ∼1300 H α emitters (HAEs) at z ∼ 2.3 in the ZFOURGE survey. In contrast to the traditional spectroscopic method, our sample is selected based on the flux excess in the ZFOURGE K _s broadband data relative to the best-fit stellar continuum. Using the same method, we also extract the strong diagnostic emission lines for these individual HAEs: [O iii ] λ λ 4959, 5007 and [O ii ] λ λ 3726, 3729. Our measurements demonstrate good consistency with those obtained from spectroscopic surveys. We investigate the relationship between the equivalent widths (EWs) of these emission lines and various galaxy properties, including stellar mass, stellar age, star formation rate, specific star formation rate, and ionization state (O32). We have identified a discrepancy between HAEs at z ∼ 2.3 and typical local star-forming galaxies observed in the Sloan Digital Sky Survey, suggesting the evolution of lower gas-phase metallicity ( Z ) and higher ionization parameters ( U ) with redshift. Notably, we have observed a significant number of low-mass HAEs exhibiting exceptionally high EW _[O _iii _] . Their galaxy properties are comparable to those of extreme objects, such as extreme O3 emitters and Ly α emitters at z ≃ 2–3. Considering that these characteristics may indicate potential strong Lyman continuum leakage, higher-redshift analogs of the low-mass HAEs could be significant contributors to the cosmic reionization. Further investigations of this particular population are required to gain a clearer understanding of galaxy evolution and cosmic reionization. High-redshift galaxies Emission line galaxies Galaxy evolution Astrophysics Kentaro Motohara verfasserin aut Lee Spitler verfasserin aut Kimihiko Nakajima verfasserin aut Rieko Momose verfasserin aut Tadayuki Kodama verfasserin aut Masahiro Konishi verfasserin aut Hidenori Takahashi verfasserin aut Kosuke Kushibiki verfasserin aut Yukihiro Kono verfasserin aut Yasunori Terao verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 964(2024), 1, p 5 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:964 year:2024 number:1, p 5 https://doi.org/10.3847/1538-4357/ad20cc kostenfrei https://doaj.org/article/172a1da6d4fa42d1854c5b29f22231c1 kostenfrei https://doi.org/10.3847/1538-4357/ad20cc 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 1, p 5
language	English
source	In The Astrophysical Journal 964(2024), 1, p 5 volume:964 year:2024 number:1, p 5
sourceStr	In The Astrophysical Journal 964(2024), 1, p 5 volume:964 year:2024 number:1, p 5
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	High-redshift galaxies Emission line galaxies Galaxy evolution Astrophysics
isfreeaccess_bool	true
container_title	The Astrophysical Journal
authorswithroles_txt_mv	Nuo Chen @@aut@@ Kentaro Motohara @@aut@@ Lee Spitler @@aut@@ Kimihiko Nakajima @@aut@@ Rieko Momose @@aut@@ Tadayuki Kodama @@aut@@ Masahiro Konishi @@aut@@ Hidenori Takahashi @@aut@@ Kosuke Kushibiki @@aut@@ Yukihiro Kono @@aut@@ Yasunori Terao @@aut@@
publishDateDaySort_date	2024-01-01T00:00:00Z
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id	DOAJ092278493
language_de	englisch
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author	Nuo Chen
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illustrated	Not Illustrated
issn	15384357
topic_title	QB460-466 Multiple Emission Lines of Hα Emitters at z ∼ 2.3 from the Broad- and Medium-band Photometry in the ZFOURGE Survey High-redshift galaxies Emission line galaxies Galaxy evolution
topic	misc QB460-466 misc High-redshift galaxies misc Emission line galaxies misc Galaxy evolution misc Astrophysics
topic_unstemmed	misc QB460-466 misc High-redshift galaxies misc Emission line galaxies misc Galaxy evolution misc Astrophysics
topic_browse	misc QB460-466 misc High-redshift galaxies misc Emission line galaxies misc Galaxy evolution misc Astrophysics
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title	Multiple Emission Lines of Hα Emitters at z ∼ 2.3 from the Broad- and Medium-band Photometry in the ZFOURGE Survey
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title_full	Multiple Emission Lines of Hα Emitters at z ∼ 2.3 from the Broad- and Medium-band Photometry in the ZFOURGE Survey
author_sort	Nuo Chen
journal	The Astrophysical Journal
journalStr	The Astrophysical Journal
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author_browse	Nuo Chen Kentaro Motohara Lee Spitler Kimihiko Nakajima Rieko Momose Tadayuki Kodama Masahiro Konishi Hidenori Takahashi Kosuke Kushibiki Yukihiro Kono Yasunori Terao
container_volume	964
class	QB460-466
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author-letter	Nuo Chen
doi_str_mv	10.3847/1538-4357/ad20cc
author2-role	verfasserin
title_sort	multiple emission lines of hα emitters at z ∼ 2.3 from the broad- and medium-band photometry in the zfourge survey
callnumber	QB460-466
title_auth	Multiple Emission Lines of Hα Emitters at z ∼ 2.3 from the Broad- and Medium-band Photometry in the ZFOURGE Survey
abstract	We present a multiple emission line study of ∼1300 H α emitters (HAEs) at z ∼ 2.3 in the ZFOURGE survey. In contrast to the traditional spectroscopic method, our sample is selected based on the flux excess in the ZFOURGE K _s broadband data relative to the best-fit stellar continuum. Using the same method, we also extract the strong diagnostic emission lines for these individual HAEs: [O iii ] λ λ 4959, 5007 and [O ii ] λ λ 3726, 3729. Our measurements demonstrate good consistency with those obtained from spectroscopic surveys. We investigate the relationship between the equivalent widths (EWs) of these emission lines and various galaxy properties, including stellar mass, stellar age, star formation rate, specific star formation rate, and ionization state (O32). We have identified a discrepancy between HAEs at z ∼ 2.3 and typical local star-forming galaxies observed in the Sloan Digital Sky Survey, suggesting the evolution of lower gas-phase metallicity ( Z ) and higher ionization parameters ( U ) with redshift. Notably, we have observed a significant number of low-mass HAEs exhibiting exceptionally high EW _[O _iii _] . Their galaxy properties are comparable to those of extreme objects, such as extreme O3 emitters and Ly α emitters at z ≃ 2–3. Considering that these characteristics may indicate potential strong Lyman continuum leakage, higher-redshift analogs of the low-mass HAEs could be significant contributors to the cosmic reionization. Further investigations of this particular population are required to gain a clearer understanding of galaxy evolution and cosmic reionization.
abstractGer	We present a multiple emission line study of ∼1300 H α emitters (HAEs) at z ∼ 2.3 in the ZFOURGE survey. In contrast to the traditional spectroscopic method, our sample is selected based on the flux excess in the ZFOURGE K _s broadband data relative to the best-fit stellar continuum. Using the same method, we also extract the strong diagnostic emission lines for these individual HAEs: [O iii ] λ λ 4959, 5007 and [O ii ] λ λ 3726, 3729. Our measurements demonstrate good consistency with those obtained from spectroscopic surveys. We investigate the relationship between the equivalent widths (EWs) of these emission lines and various galaxy properties, including stellar mass, stellar age, star formation rate, specific star formation rate, and ionization state (O32). We have identified a discrepancy between HAEs at z ∼ 2.3 and typical local star-forming galaxies observed in the Sloan Digital Sky Survey, suggesting the evolution of lower gas-phase metallicity ( Z ) and higher ionization parameters ( U ) with redshift. Notably, we have observed a significant number of low-mass HAEs exhibiting exceptionally high EW _[O _iii _] . Their galaxy properties are comparable to those of extreme objects, such as extreme O3 emitters and Ly α emitters at z ≃ 2–3. Considering that these characteristics may indicate potential strong Lyman continuum leakage, higher-redshift analogs of the low-mass HAEs could be significant contributors to the cosmic reionization. Further investigations of this particular population are required to gain a clearer understanding of galaxy evolution and cosmic reionization.
abstract_unstemmed	We present a multiple emission line study of ∼1300 H α emitters (HAEs) at z ∼ 2.3 in the ZFOURGE survey. In contrast to the traditional spectroscopic method, our sample is selected based on the flux excess in the ZFOURGE K _s broadband data relative to the best-fit stellar continuum. Using the same method, we also extract the strong diagnostic emission lines for these individual HAEs: [O iii ] λ λ 4959, 5007 and [O ii ] λ λ 3726, 3729. Our measurements demonstrate good consistency with those obtained from spectroscopic surveys. We investigate the relationship between the equivalent widths (EWs) of these emission lines and various galaxy properties, including stellar mass, stellar age, star formation rate, specific star formation rate, and ionization state (O32). We have identified a discrepancy between HAEs at z ∼ 2.3 and typical local star-forming galaxies observed in the Sloan Digital Sky Survey, suggesting the evolution of lower gas-phase metallicity ( Z ) and higher ionization parameters ( U ) with redshift. Notably, we have observed a significant number of low-mass HAEs exhibiting exceptionally high EW _[O _iii _] . Their galaxy properties are comparable to those of extreme objects, such as extreme O3 emitters and Ly α emitters at z ≃ 2–3. Considering that these characteristics may indicate potential strong Lyman continuum leakage, higher-redshift analogs of the low-mass HAEs could be significant contributors to the cosmic reionization. Further investigations of this particular population are required to gain a clearer understanding of galaxy evolution and cosmic reionization.
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container_issue	1, p 5
title_short	Multiple Emission Lines of Hα Emitters at z ∼ 2.3 from the Broad- and Medium-band Photometry in the ZFOURGE Survey
url	https://doi.org/10.3847/1538-4357/ad20cc https://doaj.org/article/172a1da6d4fa42d1854c5b29f22231c1 https://doaj.org/toc/1538-4357
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author2	Kentaro Motohara Lee Spitler Kimihiko Nakajima Rieko Momose Tadayuki Kodama Masahiro Konishi Hidenori Takahashi Kosuke Kushibiki Yukihiro Kono Yasunori Terao
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up_date	2024-07-04T00:46:15.735Z
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