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Effect of local environment and stellar mass on galaxy quenching and morphology at 0.5 < z < 2.0

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Organization
Abstract
We study galactic star formation activity as a function of environment and stellar mass over 0.5 < z < 2.0 using the FourStar Galaxy Evolution (ZFOURGE) survey. We estimate the galaxy environment using a Bayesian-motivated measure of the distance to the third nearest neighbor for galaxies to the stellar mass completeness of our survey, log(M / M-circle dot)> 9(9.5) at z = 1.3 (2.0). This method, when applied to a mock catalog with the photometric-redshift precision (sigma(z) (1+ z) less than or similar to 0.02) of ZFOURGE, accurately recovers galaxies in low-and high-density environments. We quantify the environmental quenching efficiency and show that at z > 0.5, it depends on galaxy stellar mass, demonstrating that the effects of quenching related to (stellar) mass and environment are not separable. In high-density environments, the mass and environmental quenching efficiencies are comparable for massive galaxies (log(M / M-circle dot) greater than or similar to 10.5) at all redshifts. For lower-mass galaxies (log(M / M)(circle dot)) less than or similar to 10), the environmental quenching efficiency is very low at z greater than or similar to 1.5, but increases rapidly with decreasing redshift. Environmental quenching can account for nearly all quiescent lower-mass galaxies (log(M / M-circle dot) similar to 9-10), which appear primarily at z less than or similar to 1.0. The morphologies of lower-mass quiescent galaxies are inconsistent with those expected of recently quenched star-forming galaxies. Some environmental process must transform the morphologies on similar timescales as the environmental quenching itself. The evolution of the environmental quenching favors models that combine gas starvation (as galaxies become satellites) with gas exhaustion through star formation and outflows ("overconsumption"), and additional processes such as galaxy interactions, tidal stripping, and disk fading to account for the morphological differences between the quiescent and star-forming galaxy populations.
Keywords
COLOR-DENSITY RELATION, SIMILAR-TO 1, ACTIVE GALACTIC NUCLEI, STAR-FORMATION HISTORY, DIGITAL SKY SURVEY, QUIESCENT GALAXIES, SATELLITE GALAXIES, BLACK-HOLES, RED SEQUENCE, HALO MASS, galaxies: evolution, galaxies: groups: general, galaxies: high-redshift, galaxies: star formation

Citation

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MLA
Kawinwanichakij, Lalitwadee, Casey Papovich, Ryan F Quadri, et al. “Effect of Local Environment and Stellar Mass on Galaxy Quenching and Morphology at 0.5 < z < 2.0.” ASTROPHYSICAL JOURNAL 847.2 (2017): n. pag. Print.
APA
Kawinwanichakij, L., Papovich, C., Quadri, R. F., Glazebrook, K., Kacprzak, G. G., Allen, R. J., Bell, E. F., et al. (2017). Effect of local environment and stellar mass on galaxy quenching and morphology at 0.5 < z < 2.0. ASTROPHYSICAL JOURNAL, 847(2).
Chicago author-date
Kawinwanichakij, Lalitwadee, Casey Papovich, Ryan F Quadri, Karl Glazebrook, Glenn G Kacprzak, Rebecca J Allen, Eric F Bell, et al. 2017. “Effect of Local Environment and Stellar Mass on Galaxy Quenching and Morphology at 0.5 < z < 2.0.” Astrophysical Journal 847 (2).
Chicago author-date (all authors)
Kawinwanichakij, Lalitwadee, Casey Papovich, Ryan F Quadri, Karl Glazebrook, Glenn G Kacprzak, Rebecca J Allen, Eric F Bell, Darren J Croton, Avishai Dekel, Henry C Ferguson, Ben Forrest Ben Forrest, Norman A Grogin, Yicheng Guo, Dale D Kocevski, Anton M Koekemoer, Ivo Labbe, Ray A Lucas, Themiya Nanayakkara, Lee R Spitler, Caroline Straatman, Kim-Vy H Tran, Adam Tomczak, and Pieter van Dokkum. 2017. “Effect of Local Environment and Stellar Mass on Galaxy Quenching and Morphology at 0.5 < z < 2.0.” Astrophysical Journal 847 (2).
Vancouver
1.
Kawinwanichakij L, Papovich C, Quadri RF, Glazebrook K, Kacprzak GG, Allen RJ, et al. Effect of local environment and stellar mass on galaxy quenching and morphology at 0.5 < z < 2.0. ASTROPHYSICAL JOURNAL. 2017;847(2).
IEEE
[1]
L. Kawinwanichakij et al., “Effect of local environment and stellar mass on galaxy quenching and morphology at 0.5 < z < 2.0,” ASTROPHYSICAL JOURNAL, vol. 847, no. 2, 2017.
@article{8582598,
  abstract     = {We study galactic star formation activity as a function of environment and stellar mass over 0.5 < z < 2.0 using the FourStar Galaxy Evolution (ZFOURGE) survey. We estimate the galaxy environment using a Bayesian-motivated measure of the distance to the third nearest neighbor for galaxies to the stellar mass completeness of our survey, log(M / M-circle dot)> 9(9.5) at z = 1.3 (2.0). This method, when applied to a mock catalog with the photometric-redshift precision (sigma(z) (1+ z) less than or similar to 0.02) of ZFOURGE, accurately recovers galaxies in low-and high-density environments. We quantify the environmental quenching efficiency and show that at z > 0.5, it depends on galaxy stellar mass, demonstrating that the effects of quenching related to (stellar) mass and environment are not separable. In high-density environments, the mass and environmental quenching efficiencies are comparable for massive galaxies (log(M / M-circle dot) greater than or similar to 10.5) at all redshifts. For lower-mass galaxies (log(M / M)(circle dot)) less than or similar to 10), the environmental quenching efficiency is very low at z greater than or similar to 1.5, but increases rapidly with decreasing redshift. Environmental quenching can account for nearly all quiescent lower-mass galaxies (log(M / M-circle dot) similar to 9-10), which appear primarily at z less than or similar to 1.0. The morphologies of lower-mass quiescent galaxies are inconsistent with those expected of recently quenched star-forming galaxies. Some environmental process must transform the morphologies on similar timescales as the environmental quenching itself. The evolution of the environmental quenching favors models that combine gas starvation (as galaxies become satellites) with gas exhaustion through star formation and outflows ("overconsumption"), and additional processes such as galaxy interactions, tidal stripping, and disk fading to account for the morphological differences between the quiescent and star-forming galaxy populations.},
  articleno    = {134},
  author       = {Kawinwanichakij, Lalitwadee and Papovich, Casey and Quadri, Ryan F and Glazebrook, Karl and Kacprzak, Glenn G and Allen, Rebecca J and Bell, Eric F and Croton, Darren J and Dekel, Avishai and Ferguson, Henry C and Ben Forrest, Ben Forrest and Grogin, Norman A and Guo, Yicheng and Kocevski, Dale D and Koekemoer, Anton M and Labbe, Ivo and Lucas, Ray A and Nanayakkara, Themiya and Spitler, Lee R and Straatman, Caroline and Tran, Kim-Vy H and Tomczak, Adam and van Dokkum, Pieter},
  issn         = {0004-637X},
  journal      = {ASTROPHYSICAL JOURNAL},
  keywords     = {COLOR-DENSITY RELATION,SIMILAR-TO 1,ACTIVE GALACTIC NUCLEI,STAR-FORMATION HISTORY,DIGITAL SKY SURVEY,QUIESCENT GALAXIES,SATELLITE GALAXIES,BLACK-HOLES,RED SEQUENCE,HALO MASS,galaxies: evolution,galaxies: groups: general,galaxies: high-redshift,galaxies: star formation},
  language     = {eng},
  number       = {2},
  pages        = {21},
  title        = {Effect of local environment and stellar mass on galaxy quenching and morphology at 0.5 < z < 2.0},
  url          = {http://dx.doi.org/10.3847/1538-4357/aa8b75},
  volume       = {847},
  year         = {2017},
}

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