Demographics of Star-forming Galaxies since z ∼ 2.5. I. The UVJ Diagram in CANDELS

Jerome J. Fang; S. M. Faber; David C. Koo; Aldo Rodríguez-puebla; Yicheng Guo; Guillermo Barro; Peter Behroozi; Gabriel Brammer; Zhu Chen; Avishai Dekel; Henry C. Ferguson; Eric Gawiser; Mauro Giavalisco; Jeyhan Kartaltepe; Dale D. Kocevski; Anton M. Koekemoer; Elizabeth J. Mcgrath; Daniel Mcintosh; Jeffrey A. Newman; Camilla Pacifici; Viraj Pandya; Pablo G. Pérez-gonzález; Joel R. Primack; Brett Salmon; Jonathan R. Trump; Benjamin Weiner; S. P. Willner; Viviana Acquaviva; Tomas Dahlen; Steven L. Finkelstein; Kristian Finlator; Adriano Fontana; Audrey Galametz; Norman A. Grogin; Ruth Gruetzbauch; Seth Johnson; Bahram Mobasher; Casey J. Papovich; Janine Pforr; Mara Salvato; P. Santini; Arjen Van Der Wel; Tommy Wiklind; Stijn Wuyts

doi:10.3847/1538-4357/aabcba

Demographics of Star-forming Galaxies since z ∼ 2.5. I. The UVJ Diagram in CANDELS

Jerome J. Fang, S. M. Faber, David C. Koo, Aldo Rodríguez-puebla, Yicheng Guo, Guillermo Barro, Peter Behroozi, Gabriel Brammer, Zhu Chen, Avishai Dekel, Henry C. Ferguson, Eric Gawiser, Mauro Giavalisco, Jeyhan Kartaltepe, Dale D. Kocevski, Anton M. Koekemoer, Elizabeth J. Mcgrath, Daniel Mcintosh, Jeffrey A. Newman, Camilla PacificiViraj Pandya, Pablo G. Pérez-gonzález, Joel R. Primack, Brett Salmon, Jonathan R. Trump, Benjamin Weiner, S. P. Willner, Viviana Acquaviva, Tomas Dahlen, Steven L. Finkelstein, Kristian Finlator, Adriano Fontana, Audrey Galametz, Norman A. Grogin, Ruth Gruetzbauch, Seth Johnson, Bahram Mobasher, Casey J. Papovich, Janine Pforr, Mara Salvato, P. Santini, Arjen Van Der Wel, Tommy Wiklind, Stijn Wuyts

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Abstract

This is the first in a series of papers examining the demographics of star-forming (SF) galaxies at 0.2 < z < 2.5 in CANDELS. We study 9100 galaxies from GOODS-S and UDS, having published values of redshifts, masses, star formation rates (SFRs), and dust attenuation (A _V) derived from UV-optical spectral energy distribution fitting. In agreement with previous works, we find that the UVJ colors of a galaxy are closely correlated with its specific star formation rate (SSFR) and A _V. We define rotated UVJ coordinate axes, termed S _SED and C _SED, that are parallel and perpendicular to the SF sequence and derive a quantitative calibration that predicts SSFR from C _SED with an accuracy of ∼0.2 dex. SFRs from UV-optical fitting and from UV+IR values based on Spitzer/MIPS 24 μm agree well overall, but systematic differences of order 0.2 dex exist at high and low redshifts. A novel plotting scheme conveys the evolution of multiple galaxy properties simultaneously, and dust growth, as well as star formation decline and quenching, exhibit "mass-accelerated evolution" ("downsizing"). A population of transition galaxies below the SF main sequence is identified. These objects are located between SF and quiescent galaxies in UVJ space, and have lower A _V and smaller radii than galaxies on the main sequence. Their properties are consistent with their being in transit between the two regions. The relative numbers of quenched, transition, and SF galaxies are given as a function of mass and redshift.

Original language	English
Article number	100
Number of pages	29
Journal	Astrophysical Journal
Volume	858
Issue number	2
Early online date	11 May 2018
DOIs	https://doi.org/10.3847/1538-4357/aabcba
Publication status	Published - 11 Jun 2018

Keywords

galaxies: evolution
galaxies: fundamental parameters
galaxies: high redshift
galaxies: star formation
galaxies: structure

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/1538-4357/aabcba

Fang2018_arXiv
This is an author-created, un-copyedited version of an article published in Astrophysical Journal. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at 10.3847/1538-4357/aabcba
Accepted author manuscript, 6.04 MB

http://stacks.iop.org/0004-637X/858/i=2/a=100?key=crossref.b48858adb8cb750a86564c3c8fced975

Cite this

Fang, J. J., Faber, S. M., Koo, D. C., Rodríguez-puebla, A., Guo, Y., Barro, G., Behroozi, P., Brammer, G., Chen, Z., Dekel, A., Ferguson, H. C., Gawiser, E., Giavalisco, M., Kartaltepe, J., Kocevski, D. D., Koekemoer, A. M., Mcgrath, E. J., Mcintosh, D., Newman, J. A., ... Wuyts, S. (2018). Demographics of Star-forming Galaxies since z ∼ 2.5. I. The UVJ Diagram in CANDELS. Astrophysical Journal, 858(2), Article 100. https://doi.org/10.3847/1538-4357/aabcba

Fang, JJ, Faber, SM, Koo, DC, Rodríguez-puebla, A, Guo, Y, Barro, G, Behroozi, P, Brammer, G, Chen, Z, Dekel, A, Ferguson, HC, Gawiser, E, Giavalisco, M, Kartaltepe, J, Kocevski, DD, Koekemoer, AM, Mcgrath, EJ, Mcintosh, D, Newman, JA, Pacifici, C, Pandya, V, Pérez-gonzález, PG, Primack, JR, Salmon, B, Trump, JR, Weiner, B, Willner, SP, Acquaviva, V, Dahlen, T, Finkelstein, SL, Finlator, K, Fontana, A, Galametz, A, Grogin, NA, Gruetzbauch, R, Johnson, S, Mobasher, B, Papovich, CJ, Pforr, J, Salvato, M, Santini, P, Van Der Wel, A, Wiklind, T & Wuyts, S 2018, 'Demographics of Star-forming Galaxies since z ∼ 2.5. I. The UVJ Diagram in CANDELS', Astrophysical Journal, vol. 858, no. 2, 100. https://doi.org/10.3847/1538-4357/aabcba

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abstract = "This is the first in a series of papers examining the demographics of star-forming (SF) galaxies at 0.2 < z < 2.5 in CANDELS. We study 9100 galaxies from GOODS-S and UDS, having published values of redshifts, masses, star formation rates (SFRs), and dust attenuation (A V) derived from UV-optical spectral energy distribution fitting. In agreement with previous works, we find that the UVJ colors of a galaxy are closely correlated with its specific star formation rate (SSFR) and A V. We define rotated UVJ coordinate axes, termed S SED and C SED, that are parallel and perpendicular to the SF sequence and derive a quantitative calibration that predicts SSFR from C SED with an accuracy of ∼0.2 dex. SFRs from UV-optical fitting and from UV+IR values based on Spitzer/MIPS 24 μm agree well overall, but systematic differences of order 0.2 dex exist at high and low redshifts. A novel plotting scheme conveys the evolution of multiple galaxy properties simultaneously, and dust growth, as well as star formation decline and quenching, exhibit {"}mass-accelerated evolution{"} ({"}downsizing{"}). A population of transition galaxies below the SF main sequence is identified. These objects are located between SF and quiescent galaxies in UVJ space, and have lower A V and smaller radii than galaxies on the main sequence. Their properties are consistent with their being in transit between the two regions. The relative numbers of quenched, transition, and SF galaxies are given as a function of mass and redshift. ",

keywords = "galaxies: evolution, galaxies: fundamental parameters, galaxies: high redshift, galaxies: star formation, galaxies: structure",

author = "Fang, {Jerome J.} and Faber, {S. M.} and Koo, {David C.} and Aldo Rodr{\'i}guez-puebla and Yicheng Guo and Guillermo Barro and Peter Behroozi and Gabriel Brammer and Zhu Chen and Avishai Dekel and Ferguson, {Henry C.} and Eric Gawiser and Mauro Giavalisco and Jeyhan Kartaltepe and Kocevski, {Dale D.} and Koekemoer, {Anton M.} and Mcgrath, {Elizabeth J.} and Daniel Mcintosh and Newman, {Jeffrey A.} and Camilla Pacifici and Viraj Pandya and P{\'e}rez-gonz{\'a}lez, {Pablo G.} and Primack, {Joel R.} and Brett Salmon and Trump, {Jonathan R.} and Benjamin Weiner and Willner, {S. P.} and Viviana Acquaviva and Tomas Dahlen and Finkelstein, {Steven L.} and Kristian Finlator and Adriano Fontana and Audrey Galametz and Grogin, {Norman A.} and Ruth Gruetzbauch and Seth Johnson and Bahram Mobasher and Papovich, {Casey J.} and Janine Pforr and Mara Salvato and P. Santini and {Van Der Wel}, Arjen and Tommy Wiklind and Stijn Wuyts",

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T1 - Demographics of Star-forming Galaxies since z ∼ 2.5. I. The UVJ Diagram in CANDELS

AU - Fang, Jerome J.

AU - Faber, S. M.

AU - Koo, David C.

AU - Rodríguez-puebla, Aldo

AU - Guo, Yicheng

AU - Barro, Guillermo

AU - Behroozi, Peter

AU - Brammer, Gabriel

AU - Chen, Zhu

AU - Dekel, Avishai

AU - Ferguson, Henry C.

AU - Gawiser, Eric

AU - Giavalisco, Mauro

AU - Kartaltepe, Jeyhan

AU - Kocevski, Dale D.

AU - Koekemoer, Anton M.

AU - Mcgrath, Elizabeth J.

AU - Mcintosh, Daniel

AU - Newman, Jeffrey A.

AU - Pacifici, Camilla

AU - Pandya, Viraj

AU - Pérez-gonzález, Pablo G.

AU - Primack, Joel R.

AU - Salmon, Brett

AU - Trump, Jonathan R.

AU - Weiner, Benjamin

AU - Willner, S. P.

AU - Acquaviva, Viviana

AU - Dahlen, Tomas

AU - Finkelstein, Steven L.

AU - Finlator, Kristian

AU - Fontana, Adriano

AU - Galametz, Audrey

AU - Grogin, Norman A.

AU - Gruetzbauch, Ruth

AU - Johnson, Seth

AU - Mobasher, Bahram

AU - Papovich, Casey J.

AU - Pforr, Janine

AU - Salvato, Mara

AU - Santini, P.

AU - Van Der Wel, Arjen

AU - Wiklind, Tommy

AU - Wuyts, Stijn

PY - 2018/6/11

Y1 - 2018/6/11

N2 - This is the first in a series of papers examining the demographics of star-forming (SF) galaxies at 0.2 < z < 2.5 in CANDELS. We study 9100 galaxies from GOODS-S and UDS, having published values of redshifts, masses, star formation rates (SFRs), and dust attenuation (A V) derived from UV-optical spectral energy distribution fitting. In agreement with previous works, we find that the UVJ colors of a galaxy are closely correlated with its specific star formation rate (SSFR) and A V. We define rotated UVJ coordinate axes, termed S SED and C SED, that are parallel and perpendicular to the SF sequence and derive a quantitative calibration that predicts SSFR from C SED with an accuracy of ∼0.2 dex. SFRs from UV-optical fitting and from UV+IR values based on Spitzer/MIPS 24 μm agree well overall, but systematic differences of order 0.2 dex exist at high and low redshifts. A novel plotting scheme conveys the evolution of multiple galaxy properties simultaneously, and dust growth, as well as star formation decline and quenching, exhibit "mass-accelerated evolution" ("downsizing"). A population of transition galaxies below the SF main sequence is identified. These objects are located between SF and quiescent galaxies in UVJ space, and have lower A V and smaller radii than galaxies on the main sequence. Their properties are consistent with their being in transit between the two regions. The relative numbers of quenched, transition, and SF galaxies are given as a function of mass and redshift.

AB - This is the first in a series of papers examining the demographics of star-forming (SF) galaxies at 0.2 < z < 2.5 in CANDELS. We study 9100 galaxies from GOODS-S and UDS, having published values of redshifts, masses, star formation rates (SFRs), and dust attenuation (A V) derived from UV-optical spectral energy distribution fitting. In agreement with previous works, we find that the UVJ colors of a galaxy are closely correlated with its specific star formation rate (SSFR) and A V. We define rotated UVJ coordinate axes, termed S SED and C SED, that are parallel and perpendicular to the SF sequence and derive a quantitative calibration that predicts SSFR from C SED with an accuracy of ∼0.2 dex. SFRs from UV-optical fitting and from UV+IR values based on Spitzer/MIPS 24 μm agree well overall, but systematic differences of order 0.2 dex exist at high and low redshifts. A novel plotting scheme conveys the evolution of multiple galaxy properties simultaneously, and dust growth, as well as star formation decline and quenching, exhibit "mass-accelerated evolution" ("downsizing"). A population of transition galaxies below the SF main sequence is identified. These objects are located between SF and quiescent galaxies in UVJ space, and have lower A V and smaller radii than galaxies on the main sequence. Their properties are consistent with their being in transit between the two regions. The relative numbers of quenched, transition, and SF galaxies are given as a function of mass and redshift.

KW - galaxies: evolution

KW - galaxies: fundamental parameters

KW - galaxies: high redshift

KW - galaxies: star formation

KW - galaxies: structure

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U2 - 10.3847/1538-4357/aabcba

DO - 10.3847/1538-4357/aabcba

M3 - Article

SN - 0004-637X

VL - 858

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 100

ER -

Demographics of Star-forming Galaxies since z ∼ 2.5. I. The UVJ Diagram in CANDELS

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Keywords

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