Blue Rest-frame UV-optical Colors in z similar to 8 Galaxies from GREATS: Very Young Stellar Populations at similar to 650 Myr of Cosmic Time

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Blue Rest-frame UV-optical Colors in z similar to 8 Galaxies from GREATS : Very Young Stellar Populations at similar to 650 Myr of Cosmic Time. / Stefanon, Mauro; Bouwens, Rychard J.; Labbe, Ivo; Illingworth, Garth D.; Oesch, Pascal A.; van Dokkum, Pieter; Gonzalez, Valentino.

In: Astrophysical Journal, Vol. 927, No. 1, 48, 01.03.2022.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Stefanon, M, Bouwens, RJ, Labbe, I, Illingworth, GD, Oesch, PA, van Dokkum, P & Gonzalez, V 2022, 'Blue Rest-frame UV-optical Colors in z similar to 8 Galaxies from GREATS: Very Young Stellar Populations at similar to 650 Myr of Cosmic Time', Astrophysical Journal, vol. 927, no. 1, 48. https://doi.org/10.3847/1538-4357/ac3de7

APA

Stefanon, M., Bouwens, R. J., Labbe, I., Illingworth, G. D., Oesch, P. A., van Dokkum, P., & Gonzalez, V. (2022). Blue Rest-frame UV-optical Colors in z similar to 8 Galaxies from GREATS: Very Young Stellar Populations at similar to 650 Myr of Cosmic Time. Astrophysical Journal, 927(1), [48]. https://doi.org/10.3847/1538-4357/ac3de7

Vancouver

Stefanon M, Bouwens RJ, Labbe I, Illingworth GD, Oesch PA, van Dokkum P et al. Blue Rest-frame UV-optical Colors in z similar to 8 Galaxies from GREATS: Very Young Stellar Populations at similar to 650 Myr of Cosmic Time. Astrophysical Journal. 2022 Mar 1;927(1). 48. https://doi.org/10.3847/1538-4357/ac3de7

Author

Stefanon, Mauro ; Bouwens, Rychard J. ; Labbe, Ivo ; Illingworth, Garth D. ; Oesch, Pascal A. ; van Dokkum, Pieter ; Gonzalez, Valentino. / Blue Rest-frame UV-optical Colors in z similar to 8 Galaxies from GREATS : Very Young Stellar Populations at similar to 650 Myr of Cosmic Time. In: Astrophysical Journal. 2022 ; Vol. 927, No. 1.

Bibtex

@article{d349c8f1f457487b896c7eab67078fa6,
title = "Blue Rest-frame UV-optical Colors in z similar to 8 Galaxies from GREATS: Very Young Stellar Populations at similar to 650 Myr of Cosmic Time",
abstract = "Deep rest-optical observations are required to accurately constrain the stellar populations of z similar to 8 galaxies. Due to significant limitations in the availability of such data for statistically complete samples, observational results have been limited to modest numbers of bright or lensed sources. To revolutionize the present characterization of z similar to 8 galaxies, we exploit the ultradeep (similar to 27 mag, 3 sigma) Spitzer/Infrared Array Camera (IRAC) 3.6 and 4.5 mu m data, probing the rest-frame optical at z similar to 8, over similar to 200 arcmin(2) of the GOODS fields from the recently completed GOODS Re-ionization Era wide-Area Treasury from Spitzer program (GREATS), combined with observations in the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS)/Ultra Deep Survey (UDS) and CANDELS/Cosmic Evolution Survey (COSMOS) fields. We stacked greater than or similar to 100 z similar to 8 Lyman-break galaxies in four bins of UV luminosity (M (UV) similar to -20.7 to -18.4 mag) and study their H (160) - [3.6] and [3.6]-[4.5] colors. We find young ages (less than or similar to 100 Myr) for the three faintest stacks, inferred from their blue H (160) - [3.6] similar to 0 mag colors, consistent with a negative Balmer break. Meanwhile, the redder H (160) - [3.6] color seen in the brightest stack is suggestive of slightly older ages. We explored the existence of a correlation between the UV luminosity and age, and find either no trend or fainter galaxies being younger. The stacked SEDs also exhibit very red [3.6]-[4.5] similar to 0.5 mag colors, indicative of intense [O iii]+H beta nebular emission and star formation rate (SFR). The correspondingly high specific SFRs, sSFR greater than or similar to 10 Gyr(-1), are consistent with recent determinations at similar redshifts and higher luminosities, and support the coevolution between the sSFR and the specific halo mass accretion rate.",
keywords = "ULTRA DEEP FIELD, STAR-FORMING GALAXIES, FORMATION MAIN-SEQUENCE, PLUS O III, LUMINOSITY FUNCTION, FORMATION RATES, MASS FUNCTIONS, LY-ALPHA, SIGNIFICANT EVOLUTION, SPECTRAL EVOLUTION",
author = "Mauro Stefanon and Bouwens, {Rychard J.} and Ivo Labbe and Illingworth, {Garth D.} and Oesch, {Pascal A.} and {van Dokkum}, Pieter and Valentino Gonzalez",
year = "2022",
month = mar,
day = "1",
doi = "10.3847/1538-4357/ac3de7",
language = "English",
volume = "927",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing, Inc",
number = "1",

}

RIS

TY - JOUR

T1 - Blue Rest-frame UV-optical Colors in z similar to 8 Galaxies from GREATS

T2 - Very Young Stellar Populations at similar to 650 Myr of Cosmic Time

AU - Stefanon, Mauro

AU - Bouwens, Rychard J.

AU - Labbe, Ivo

AU - Illingworth, Garth D.

AU - Oesch, Pascal A.

AU - van Dokkum, Pieter

AU - Gonzalez, Valentino

PY - 2022/3/1

Y1 - 2022/3/1

N2 - Deep rest-optical observations are required to accurately constrain the stellar populations of z similar to 8 galaxies. Due to significant limitations in the availability of such data for statistically complete samples, observational results have been limited to modest numbers of bright or lensed sources. To revolutionize the present characterization of z similar to 8 galaxies, we exploit the ultradeep (similar to 27 mag, 3 sigma) Spitzer/Infrared Array Camera (IRAC) 3.6 and 4.5 mu m data, probing the rest-frame optical at z similar to 8, over similar to 200 arcmin(2) of the GOODS fields from the recently completed GOODS Re-ionization Era wide-Area Treasury from Spitzer program (GREATS), combined with observations in the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS)/Ultra Deep Survey (UDS) and CANDELS/Cosmic Evolution Survey (COSMOS) fields. We stacked greater than or similar to 100 z similar to 8 Lyman-break galaxies in four bins of UV luminosity (M (UV) similar to -20.7 to -18.4 mag) and study their H (160) - [3.6] and [3.6]-[4.5] colors. We find young ages (less than or similar to 100 Myr) for the three faintest stacks, inferred from their blue H (160) - [3.6] similar to 0 mag colors, consistent with a negative Balmer break. Meanwhile, the redder H (160) - [3.6] color seen in the brightest stack is suggestive of slightly older ages. We explored the existence of a correlation between the UV luminosity and age, and find either no trend or fainter galaxies being younger. The stacked SEDs also exhibit very red [3.6]-[4.5] similar to 0.5 mag colors, indicative of intense [O iii]+H beta nebular emission and star formation rate (SFR). The correspondingly high specific SFRs, sSFR greater than or similar to 10 Gyr(-1), are consistent with recent determinations at similar redshifts and higher luminosities, and support the coevolution between the sSFR and the specific halo mass accretion rate.

AB - Deep rest-optical observations are required to accurately constrain the stellar populations of z similar to 8 galaxies. Due to significant limitations in the availability of such data for statistically complete samples, observational results have been limited to modest numbers of bright or lensed sources. To revolutionize the present characterization of z similar to 8 galaxies, we exploit the ultradeep (similar to 27 mag, 3 sigma) Spitzer/Infrared Array Camera (IRAC) 3.6 and 4.5 mu m data, probing the rest-frame optical at z similar to 8, over similar to 200 arcmin(2) of the GOODS fields from the recently completed GOODS Re-ionization Era wide-Area Treasury from Spitzer program (GREATS), combined with observations in the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS)/Ultra Deep Survey (UDS) and CANDELS/Cosmic Evolution Survey (COSMOS) fields. We stacked greater than or similar to 100 z similar to 8 Lyman-break galaxies in four bins of UV luminosity (M (UV) similar to -20.7 to -18.4 mag) and study their H (160) - [3.6] and [3.6]-[4.5] colors. We find young ages (less than or similar to 100 Myr) for the three faintest stacks, inferred from their blue H (160) - [3.6] similar to 0 mag colors, consistent with a negative Balmer break. Meanwhile, the redder H (160) - [3.6] color seen in the brightest stack is suggestive of slightly older ages. We explored the existence of a correlation between the UV luminosity and age, and find either no trend or fainter galaxies being younger. The stacked SEDs also exhibit very red [3.6]-[4.5] similar to 0.5 mag colors, indicative of intense [O iii]+H beta nebular emission and star formation rate (SFR). The correspondingly high specific SFRs, sSFR greater than or similar to 10 Gyr(-1), are consistent with recent determinations at similar redshifts and higher luminosities, and support the coevolution between the sSFR and the specific halo mass accretion rate.

KW - ULTRA DEEP FIELD

KW - STAR-FORMING GALAXIES

KW - FORMATION MAIN-SEQUENCE

KW - PLUS O III

KW - LUMINOSITY FUNCTION

KW - FORMATION RATES

KW - MASS FUNCTIONS

KW - LY-ALPHA

KW - SIGNIFICANT EVOLUTION

KW - SPECTRAL EVOLUTION

U2 - 10.3847/1538-4357/ac3de7

DO - 10.3847/1538-4357/ac3de7

M3 - Journal article

VL - 927

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 48

ER -

ID: 302553954