COSMOS2020: Exploring the Dawn of Quenching for Massive Galaxies at 3 < z < 5 with a New Color-selection Method

We select and characterize a sample of massive (log( M _* / M _⊙ ) < 10.6) quiescent galaxies (QGs) at 3 < z < 5 in the latest Cosmological Evolution Survey catalog (COSMOS2020). QGs are selected using a new rest-frame color-selection method, based on their probability of belonging to the q...
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Autor*in:	Katriona M. L. Gould [verfasserIn] Gabriel Brammer [verfasserIn] Francesco Valentino [verfasserIn] Katherine E. Whitaker [verfasserIn] John. R. Weaver [verfasserIn] Claudia del P. Lagos [verfasserIn] Francesca Rizzo [verfasserIn] Maximilien Franco [verfasserIn] Bau-Ching Hsieh [verfasserIn] Olivier Ilbert [verfasserIn] Shuowen Jin [verfasserIn] Georgios Magdis [verfasserIn] Henry J. McCracken [verfasserIn] Bahram Mobasher [verfasserIn] Marko Shuntov [verfasserIn] Charles L. Steinhardt [verfasserIn] Victoria Strait [verfasserIn] Sune Toft [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	Quenched galaxies High-redshift galaxies Galaxy classification systems Gaussian mixture model

Übergeordnetes Werk:	In: The Astronomical Journal - IOP Publishing, 2022, 165(2023), 6, p 248
Übergeordnetes Werk:	volume:165 ; year:2023 ; number:6, p 248

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3847/1538-3881/accadc

Katalog-ID:	DOAJ090480090

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700	0		\|a John. R. Weaver \|e verfasserin \|4 aut
700	0		\|a Claudia del P. Lagos \|e verfasserin \|4 aut
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700	0		\|a Sune Toft \|e verfasserin \|4 aut
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allfields	10.3847/1538-3881/accadc doi (DE-627)DOAJ090480090 (DE-599)DOAJ9fd4905453a646ef92bde38091da9414 DE-627 ger DE-627 rakwb eng QB1-991 Katriona M. L. Gould verfasserin aut COSMOS2020: Exploring the Dawn of Quenching for Massive Galaxies at 3 < z < 5 with a New Color-selection Method 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We select and characterize a sample of massive (log( M _* / M _⊙ ) < 10.6) quiescent galaxies (QGs) at 3 < z < 5 in the latest Cosmological Evolution Survey catalog (COSMOS2020). QGs are selected using a new rest-frame color-selection method, based on their probability of belonging to the quiescent group defined by a Gaussian mixture model (GMM) trained on rest-frame colors ( NUV − U , U − V , V − J ) of similarly massive galaxies at 2 < z < 3. We calculate the quiescent probability threshold above which a galaxy is classified as quiescent using simulated galaxies from the shark semi-analytical model. We find that, at z ≥ 3 in shark , the GMM/ NUVU − VJ method outperforms classical rest-frame UVJ selection and is a viable alternative. We select galaxies as quiescent based on their probability in COSMOS2020 at 3 < z < 5, and compare the selected sample to both UVJ - and NUVrJ -selected samples. We find that, although the new selection matches UVJ and NUVrJ in number, the overlap between color selections is only ∼50%–80%, implying that rest-frame color commonly used at lower-redshift selections cannot be equivalently used at z < 3. We compute median rest-frame spectral energy distributions for our sample and find the median QG at 3 < z < 5 has a strong Balmer/4000 Å break, and residual NUV flux indicating recent quenching. We find the number densities of the entire quiescent population (including post-starbursts) more than doubles from 3.5 ± 2.2 × 10 ^−6 Mpc ^−3 at 4 < z < 5 to 1.4 ± 0.4 × 10 ^−5 Mpc ^−3 at 3 < z < 4, confirming that the onset of massive galaxy quenching occurs as early as 3 < z < 5. Quenched galaxies High-redshift galaxies Galaxy classification systems Gaussian mixture model Astronomy Gabriel Brammer verfasserin aut Francesco Valentino verfasserin aut Katherine E. Whitaker verfasserin aut John. R. Weaver verfasserin aut Claudia del P. Lagos verfasserin aut Francesca Rizzo verfasserin aut Maximilien Franco verfasserin aut Bau-Ching Hsieh verfasserin aut Olivier Ilbert verfasserin aut Shuowen Jin verfasserin aut Georgios Magdis verfasserin aut Henry J. McCracken verfasserin aut Bahram Mobasher verfasserin aut Marko Shuntov verfasserin aut Charles L. Steinhardt verfasserin aut Victoria Strait verfasserin aut Sune Toft verfasserin aut In The Astronomical Journal IOP Publishing, 2022 165(2023), 6, p 248 (DE-627)312175647 (DE-600)2003104-X 15383881 nnns volume:165 year:2023 number:6, p 248 https://doi.org/10.3847/1538-3881/accadc kostenfrei https://doaj.org/article/9fd4905453a646ef92bde38091da9414 kostenfrei https://doi.org/10.3847/1538-3881/accadc kostenfrei https://doaj.org/toc/1538-3881 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_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2129 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 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 165 2023 6, p 248
spelling	10.3847/1538-3881/accadc doi (DE-627)DOAJ090480090 (DE-599)DOAJ9fd4905453a646ef92bde38091da9414 DE-627 ger DE-627 rakwb eng QB1-991 Katriona M. L. Gould verfasserin aut COSMOS2020: Exploring the Dawn of Quenching for Massive Galaxies at 3 < z < 5 with a New Color-selection Method 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We select and characterize a sample of massive (log( M _* / M _⊙ ) < 10.6) quiescent galaxies (QGs) at 3 < z < 5 in the latest Cosmological Evolution Survey catalog (COSMOS2020). QGs are selected using a new rest-frame color-selection method, based on their probability of belonging to the quiescent group defined by a Gaussian mixture model (GMM) trained on rest-frame colors ( NUV − U , U − V , V − J ) of similarly massive galaxies at 2 < z < 3. We calculate the quiescent probability threshold above which a galaxy is classified as quiescent using simulated galaxies from the shark semi-analytical model. We find that, at z ≥ 3 in shark , the GMM/ NUVU − VJ method outperforms classical rest-frame UVJ selection and is a viable alternative. We select galaxies as quiescent based on their probability in COSMOS2020 at 3 < z < 5, and compare the selected sample to both UVJ - and NUVrJ -selected samples. We find that, although the new selection matches UVJ and NUVrJ in number, the overlap between color selections is only ∼50%–80%, implying that rest-frame color commonly used at lower-redshift selections cannot be equivalently used at z < 3. We compute median rest-frame spectral energy distributions for our sample and find the median QG at 3 < z < 5 has a strong Balmer/4000 Å break, and residual NUV flux indicating recent quenching. We find the number densities of the entire quiescent population (including post-starbursts) more than doubles from 3.5 ± 2.2 × 10 ^−6 Mpc ^−3 at 4 < z < 5 to 1.4 ± 0.4 × 10 ^−5 Mpc ^−3 at 3 < z < 4, confirming that the onset of massive galaxy quenching occurs as early as 3 < z < 5. Quenched galaxies High-redshift galaxies Galaxy classification systems Gaussian mixture model Astronomy Gabriel Brammer verfasserin aut Francesco Valentino verfasserin aut Katherine E. Whitaker verfasserin aut John. R. Weaver verfasserin aut Claudia del P. Lagos verfasserin aut Francesca Rizzo verfasserin aut Maximilien Franco verfasserin aut Bau-Ching Hsieh verfasserin aut Olivier Ilbert verfasserin aut Shuowen Jin verfasserin aut Georgios Magdis verfasserin aut Henry J. McCracken verfasserin aut Bahram Mobasher verfasserin aut Marko Shuntov verfasserin aut Charles L. Steinhardt verfasserin aut Victoria Strait verfasserin aut Sune Toft verfasserin aut In The Astronomical Journal IOP Publishing, 2022 165(2023), 6, p 248 (DE-627)312175647 (DE-600)2003104-X 15383881 nnns volume:165 year:2023 number:6, p 248 https://doi.org/10.3847/1538-3881/accadc kostenfrei https://doaj.org/article/9fd4905453a646ef92bde38091da9414 kostenfrei https://doi.org/10.3847/1538-3881/accadc kostenfrei https://doaj.org/toc/1538-3881 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_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2129 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 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 165 2023 6, p 248
allfields_unstemmed	10.3847/1538-3881/accadc doi (DE-627)DOAJ090480090 (DE-599)DOAJ9fd4905453a646ef92bde38091da9414 DE-627 ger DE-627 rakwb eng QB1-991 Katriona M. L. Gould verfasserin aut COSMOS2020: Exploring the Dawn of Quenching for Massive Galaxies at 3 < z < 5 with a New Color-selection Method 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We select and characterize a sample of massive (log( M _* / M _⊙ ) < 10.6) quiescent galaxies (QGs) at 3 < z < 5 in the latest Cosmological Evolution Survey catalog (COSMOS2020). QGs are selected using a new rest-frame color-selection method, based on their probability of belonging to the quiescent group defined by a Gaussian mixture model (GMM) trained on rest-frame colors ( NUV − U , U − V , V − J ) of similarly massive galaxies at 2 < z < 3. We calculate the quiescent probability threshold above which a galaxy is classified as quiescent using simulated galaxies from the shark semi-analytical model. We find that, at z ≥ 3 in shark , the GMM/ NUVU − VJ method outperforms classical rest-frame UVJ selection and is a viable alternative. We select galaxies as quiescent based on their probability in COSMOS2020 at 3 < z < 5, and compare the selected sample to both UVJ - and NUVrJ -selected samples. We find that, although the new selection matches UVJ and NUVrJ in number, the overlap between color selections is only ∼50%–80%, implying that rest-frame color commonly used at lower-redshift selections cannot be equivalently used at z < 3. We compute median rest-frame spectral energy distributions for our sample and find the median QG at 3 < z < 5 has a strong Balmer/4000 Å break, and residual NUV flux indicating recent quenching. We find the number densities of the entire quiescent population (including post-starbursts) more than doubles from 3.5 ± 2.2 × 10 ^−6 Mpc ^−3 at 4 < z < 5 to 1.4 ± 0.4 × 10 ^−5 Mpc ^−3 at 3 < z < 4, confirming that the onset of massive galaxy quenching occurs as early as 3 < z < 5. Quenched galaxies High-redshift galaxies Galaxy classification systems Gaussian mixture model Astronomy Gabriel Brammer verfasserin aut Francesco Valentino verfasserin aut Katherine E. Whitaker verfasserin aut John. R. Weaver verfasserin aut Claudia del P. Lagos verfasserin aut Francesca Rizzo verfasserin aut Maximilien Franco verfasserin aut Bau-Ching Hsieh verfasserin aut Olivier Ilbert verfasserin aut Shuowen Jin verfasserin aut Georgios Magdis verfasserin aut Henry J. McCracken verfasserin aut Bahram Mobasher verfasserin aut Marko Shuntov verfasserin aut Charles L. Steinhardt verfasserin aut Victoria Strait verfasserin aut Sune Toft verfasserin aut In The Astronomical Journal IOP Publishing, 2022 165(2023), 6, p 248 (DE-627)312175647 (DE-600)2003104-X 15383881 nnns volume:165 year:2023 number:6, p 248 https://doi.org/10.3847/1538-3881/accadc kostenfrei https://doaj.org/article/9fd4905453a646ef92bde38091da9414 kostenfrei https://doi.org/10.3847/1538-3881/accadc kostenfrei https://doaj.org/toc/1538-3881 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_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2129 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 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 165 2023 6, p 248
allfieldsGer	10.3847/1538-3881/accadc doi (DE-627)DOAJ090480090 (DE-599)DOAJ9fd4905453a646ef92bde38091da9414 DE-627 ger DE-627 rakwb eng QB1-991 Katriona M. L. Gould verfasserin aut COSMOS2020: Exploring the Dawn of Quenching for Massive Galaxies at 3 < z < 5 with a New Color-selection Method 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We select and characterize a sample of massive (log( M _* / M _⊙ ) < 10.6) quiescent galaxies (QGs) at 3 < z < 5 in the latest Cosmological Evolution Survey catalog (COSMOS2020). QGs are selected using a new rest-frame color-selection method, based on their probability of belonging to the quiescent group defined by a Gaussian mixture model (GMM) trained on rest-frame colors ( NUV − U , U − V , V − J ) of similarly massive galaxies at 2 < z < 3. We calculate the quiescent probability threshold above which a galaxy is classified as quiescent using simulated galaxies from the shark semi-analytical model. We find that, at z ≥ 3 in shark , the GMM/ NUVU − VJ method outperforms classical rest-frame UVJ selection and is a viable alternative. We select galaxies as quiescent based on their probability in COSMOS2020 at 3 < z < 5, and compare the selected sample to both UVJ - and NUVrJ -selected samples. We find that, although the new selection matches UVJ and NUVrJ in number, the overlap between color selections is only ∼50%–80%, implying that rest-frame color commonly used at lower-redshift selections cannot be equivalently used at z < 3. We compute median rest-frame spectral energy distributions for our sample and find the median QG at 3 < z < 5 has a strong Balmer/4000 Å break, and residual NUV flux indicating recent quenching. We find the number densities of the entire quiescent population (including post-starbursts) more than doubles from 3.5 ± 2.2 × 10 ^−6 Mpc ^−3 at 4 < z < 5 to 1.4 ± 0.4 × 10 ^−5 Mpc ^−3 at 3 < z < 4, confirming that the onset of massive galaxy quenching occurs as early as 3 < z < 5. Quenched galaxies High-redshift galaxies Galaxy classification systems Gaussian mixture model Astronomy Gabriel Brammer verfasserin aut Francesco Valentino verfasserin aut Katherine E. Whitaker verfasserin aut John. R. Weaver verfasserin aut Claudia del P. Lagos verfasserin aut Francesca Rizzo verfasserin aut Maximilien Franco verfasserin aut Bau-Ching Hsieh verfasserin aut Olivier Ilbert verfasserin aut Shuowen Jin verfasserin aut Georgios Magdis verfasserin aut Henry J. McCracken verfasserin aut Bahram Mobasher verfasserin aut Marko Shuntov verfasserin aut Charles L. Steinhardt verfasserin aut Victoria Strait verfasserin aut Sune Toft verfasserin aut In The Astronomical Journal IOP Publishing, 2022 165(2023), 6, p 248 (DE-627)312175647 (DE-600)2003104-X 15383881 nnns volume:165 year:2023 number:6, p 248 https://doi.org/10.3847/1538-3881/accadc kostenfrei https://doaj.org/article/9fd4905453a646ef92bde38091da9414 kostenfrei https://doi.org/10.3847/1538-3881/accadc kostenfrei https://doaj.org/toc/1538-3881 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_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2129 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 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 165 2023 6, p 248
allfieldsSound	10.3847/1538-3881/accadc doi (DE-627)DOAJ090480090 (DE-599)DOAJ9fd4905453a646ef92bde38091da9414 DE-627 ger DE-627 rakwb eng QB1-991 Katriona M. L. Gould verfasserin aut COSMOS2020: Exploring the Dawn of Quenching for Massive Galaxies at 3 < z < 5 with a New Color-selection Method 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We select and characterize a sample of massive (log( M _* / M _⊙ ) < 10.6) quiescent galaxies (QGs) at 3 < z < 5 in the latest Cosmological Evolution Survey catalog (COSMOS2020). QGs are selected using a new rest-frame color-selection method, based on their probability of belonging to the quiescent group defined by a Gaussian mixture model (GMM) trained on rest-frame colors ( NUV − U , U − V , V − J ) of similarly massive galaxies at 2 < z < 3. We calculate the quiescent probability threshold above which a galaxy is classified as quiescent using simulated galaxies from the shark semi-analytical model. We find that, at z ≥ 3 in shark , the GMM/ NUVU − VJ method outperforms classical rest-frame UVJ selection and is a viable alternative. We select galaxies as quiescent based on their probability in COSMOS2020 at 3 < z < 5, and compare the selected sample to both UVJ - and NUVrJ -selected samples. We find that, although the new selection matches UVJ and NUVrJ in number, the overlap between color selections is only ∼50%–80%, implying that rest-frame color commonly used at lower-redshift selections cannot be equivalently used at z < 3. We compute median rest-frame spectral energy distributions for our sample and find the median QG at 3 < z < 5 has a strong Balmer/4000 Å break, and residual NUV flux indicating recent quenching. We find the number densities of the entire quiescent population (including post-starbursts) more than doubles from 3.5 ± 2.2 × 10 ^−6 Mpc ^−3 at 4 < z < 5 to 1.4 ± 0.4 × 10 ^−5 Mpc ^−3 at 3 < z < 4, confirming that the onset of massive galaxy quenching occurs as early as 3 < z < 5. Quenched galaxies High-redshift galaxies Galaxy classification systems Gaussian mixture model Astronomy Gabriel Brammer verfasserin aut Francesco Valentino verfasserin aut Katherine E. Whitaker verfasserin aut John. R. Weaver verfasserin aut Claudia del P. Lagos verfasserin aut Francesca Rizzo verfasserin aut Maximilien Franco verfasserin aut Bau-Ching Hsieh verfasserin aut Olivier Ilbert verfasserin aut Shuowen Jin verfasserin aut Georgios Magdis verfasserin aut Henry J. McCracken verfasserin aut Bahram Mobasher verfasserin aut Marko Shuntov verfasserin aut Charles L. Steinhardt verfasserin aut Victoria Strait verfasserin aut Sune Toft verfasserin aut In The Astronomical Journal IOP Publishing, 2022 165(2023), 6, p 248 (DE-627)312175647 (DE-600)2003104-X 15383881 nnns volume:165 year:2023 number:6, p 248 https://doi.org/10.3847/1538-3881/accadc kostenfrei https://doaj.org/article/9fd4905453a646ef92bde38091da9414 kostenfrei https://doi.org/10.3847/1538-3881/accadc kostenfrei https://doaj.org/toc/1538-3881 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_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2129 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 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 165 2023 6, p 248
language	English
source	In The Astronomical Journal 165(2023), 6, p 248 volume:165 year:2023 number:6, p 248
sourceStr	In The Astronomical Journal 165(2023), 6, p 248 volume:165 year:2023 number:6, p 248
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Quenched galaxies High-redshift galaxies Galaxy classification systems Gaussian mixture model Astronomy
isfreeaccess_bool	true
container_title	The Astronomical Journal
authorswithroles_txt_mv	Katriona M. L. Gould @@aut@@ Gabriel Brammer @@aut@@ Francesco Valentino @@aut@@ Katherine E. Whitaker @@aut@@ John. R. Weaver @@aut@@ Claudia del P. Lagos @@aut@@ Francesca Rizzo @@aut@@ Maximilien Franco @@aut@@ Bau-Ching Hsieh @@aut@@ Olivier Ilbert @@aut@@ Shuowen Jin @@aut@@ Georgios Magdis @@aut@@ Henry J. McCracken @@aut@@ Bahram Mobasher @@aut@@ Marko Shuntov @@aut@@ Charles L. Steinhardt @@aut@@ Victoria Strait @@aut@@ Sune Toft @@aut@@
publishDateDaySort_date	2023-01-01T00:00:00Z
hierarchy_top_id	312175647
id	DOAJ090480090
language_de	englisch
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callnumber-first	Q - Science
author	Katriona M. L. Gould
spellingShingle	Katriona M. L. Gould misc QB1-991 misc Quenched galaxies misc High-redshift galaxies misc Galaxy classification systems misc Gaussian mixture model misc Astronomy COSMOS2020: Exploring the Dawn of Quenching for Massive Galaxies at 3 < z < 5 with a New Color-selection Method
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topic_title	QB1-991 COSMOS2020: Exploring the Dawn of Quenching for Massive Galaxies at 3 < z < 5 with a New Color-selection Method Quenched galaxies High-redshift galaxies Galaxy classification systems Gaussian mixture model
topic	misc QB1-991 misc Quenched galaxies misc High-redshift galaxies misc Galaxy classification systems misc Gaussian mixture model misc Astronomy
topic_unstemmed	misc QB1-991 misc Quenched galaxies misc High-redshift galaxies misc Galaxy classification systems misc Gaussian mixture model misc Astronomy
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title	COSMOS2020: Exploring the Dawn of Quenching for Massive Galaxies at 3 < z < 5 with a New Color-selection Method
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title_full	COSMOS2020: Exploring the Dawn of Quenching for Massive Galaxies at 3 < z < 5 with a New Color-selection Method
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author_browse	Katriona M. L. Gould Gabriel Brammer Francesco Valentino Katherine E. Whitaker John. R. Weaver Claudia del P. Lagos Francesca Rizzo Maximilien Franco Bau-Ching Hsieh Olivier Ilbert Shuowen Jin Georgios Magdis Henry J. McCracken Bahram Mobasher Marko Shuntov Charles L. Steinhardt Victoria Strait Sune Toft
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title_sort	cosmos2020: exploring the dawn of quenching for massive galaxies at 3 < z < 5 with a new color-selection method
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title_auth	COSMOS2020: Exploring the Dawn of Quenching for Massive Galaxies at 3 < z < 5 with a New Color-selection Method
abstract	We select and characterize a sample of massive (log( M _* / M _⊙ ) < 10.6) quiescent galaxies (QGs) at 3 < z < 5 in the latest Cosmological Evolution Survey catalog (COSMOS2020). QGs are selected using a new rest-frame color-selection method, based on their probability of belonging to the quiescent group defined by a Gaussian mixture model (GMM) trained on rest-frame colors ( NUV − U , U − V , V − J ) of similarly massive galaxies at 2 < z < 3. We calculate the quiescent probability threshold above which a galaxy is classified as quiescent using simulated galaxies from the shark semi-analytical model. We find that, at z ≥ 3 in shark , the GMM/ NUVU − VJ method outperforms classical rest-frame UVJ selection and is a viable alternative. We select galaxies as quiescent based on their probability in COSMOS2020 at 3 < z < 5, and compare the selected sample to both UVJ - and NUVrJ -selected samples. We find that, although the new selection matches UVJ and NUVrJ in number, the overlap between color selections is only ∼50%–80%, implying that rest-frame color commonly used at lower-redshift selections cannot be equivalently used at z < 3. We compute median rest-frame spectral energy distributions for our sample and find the median QG at 3 < z < 5 has a strong Balmer/4000 Å break, and residual NUV flux indicating recent quenching. We find the number densities of the entire quiescent population (including post-starbursts) more than doubles from 3.5 ± 2.2 × 10 ^−6 Mpc ^−3 at 4 < z < 5 to 1.4 ± 0.4 × 10 ^−5 Mpc ^−3 at 3 < z < 4, confirming that the onset of massive galaxy quenching occurs as early as 3 < z < 5.
abstractGer	We select and characterize a sample of massive (log( M _* / M _⊙ ) < 10.6) quiescent galaxies (QGs) at 3 < z < 5 in the latest Cosmological Evolution Survey catalog (COSMOS2020). QGs are selected using a new rest-frame color-selection method, based on their probability of belonging to the quiescent group defined by a Gaussian mixture model (GMM) trained on rest-frame colors ( NUV − U , U − V , V − J ) of similarly massive galaxies at 2 < z < 3. We calculate the quiescent probability threshold above which a galaxy is classified as quiescent using simulated galaxies from the shark semi-analytical model. We find that, at z ≥ 3 in shark , the GMM/ NUVU − VJ method outperforms classical rest-frame UVJ selection and is a viable alternative. We select galaxies as quiescent based on their probability in COSMOS2020 at 3 < z < 5, and compare the selected sample to both UVJ - and NUVrJ -selected samples. We find that, although the new selection matches UVJ and NUVrJ in number, the overlap between color selections is only ∼50%–80%, implying that rest-frame color commonly used at lower-redshift selections cannot be equivalently used at z < 3. We compute median rest-frame spectral energy distributions for our sample and find the median QG at 3 < z < 5 has a strong Balmer/4000 Å break, and residual NUV flux indicating recent quenching. We find the number densities of the entire quiescent population (including post-starbursts) more than doubles from 3.5 ± 2.2 × 10 ^−6 Mpc ^−3 at 4 < z < 5 to 1.4 ± 0.4 × 10 ^−5 Mpc ^−3 at 3 < z < 4, confirming that the onset of massive galaxy quenching occurs as early as 3 < z < 5.
abstract_unstemmed	We select and characterize a sample of massive (log( M _* / M _⊙ ) < 10.6) quiescent galaxies (QGs) at 3 < z < 5 in the latest Cosmological Evolution Survey catalog (COSMOS2020). QGs are selected using a new rest-frame color-selection method, based on their probability of belonging to the quiescent group defined by a Gaussian mixture model (GMM) trained on rest-frame colors ( NUV − U , U − V , V − J ) of similarly massive galaxies at 2 < z < 3. We calculate the quiescent probability threshold above which a galaxy is classified as quiescent using simulated galaxies from the shark semi-analytical model. We find that, at z ≥ 3 in shark , the GMM/ NUVU − VJ method outperforms classical rest-frame UVJ selection and is a viable alternative. We select galaxies as quiescent based on their probability in COSMOS2020 at 3 < z < 5, and compare the selected sample to both UVJ - and NUVrJ -selected samples. We find that, although the new selection matches UVJ and NUVrJ in number, the overlap between color selections is only ∼50%–80%, implying that rest-frame color commonly used at lower-redshift selections cannot be equivalently used at z < 3. We compute median rest-frame spectral energy distributions for our sample and find the median QG at 3 < z < 5 has a strong Balmer/4000 Å break, and residual NUV flux indicating recent quenching. We find the number densities of the entire quiescent population (including post-starbursts) more than doubles from 3.5 ± 2.2 × 10 ^−6 Mpc ^−3 at 4 < z < 5 to 1.4 ± 0.4 × 10 ^−5 Mpc ^−3 at 3 < z < 4, confirming that the onset of massive galaxy quenching occurs as early as 3 < z < 5.
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title_short	COSMOS2020: Exploring the Dawn of Quenching for Massive Galaxies at 3 < z < 5 with a New Color-selection Method
url	https://doi.org/10.3847/1538-3881/accadc https://doaj.org/article/9fd4905453a646ef92bde38091da9414 https://doaj.org/toc/1538-3881
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