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The absence of an environmental dependence in the mass-metallicity relation at z=2

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Organization
Abstract
We investigate the environmental dependence of the mass-metallicity relation at z = 2 with MOSFIRE/Keck as part of the ZFIRE survey. Here, we present the chemical abundance of a Virgo-like progenitor at z = 2.095 that has an established red sequence. We identified 43 cluster (< z > = 2.095 +/- 0.004) and 74 field galaxies (< z > = 2.195 +/- 0.083) for which we can measure metallicities. For the first time, we show that there is no discernible difference between the mass-metallicity relation of field and cluster galaxies to within 0.02 dex. Both our field and cluster galaxy mass-metallicity relations are consistent with recent field galaxy studies at z similar to 2. We present hydrodynamical simulations for which we derive mass-metallicity relations for field and cluster galaxies. We find at most a 0.1 dex offset toward more metal-rich simulated cluster galaxies. Our results from both simulations and observations suggest that environmental effects, if present, are small and are secondary to the ongoing inflow and outflow processes that are governed by galaxy halo mass.
Keywords
STAR-FORMING GALAXIES, COSMOLOGICAL SIMULATIONS, QUIESCENT GALAXIES, HIGH-REDSHIFT, CLUSTER, STELLAR, EVOLUTION, CONFIRMATION, SPECTROSCOPY, POPULATION, cosmology: observations, galaxies: abundances, galaxies: evolution, galaxies: fundamental parameters, galaxies: high-redshift

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MLA
Kacprzak, Glenn G., et al. “The Absence of an Environmental Dependence in the Mass-Metallicity Relation at Z=2.” ASTROPHYSICAL JOURNAL LETTERS, vol. 802, no. 2, 2015, doi:10.1088/2041-8205/802/2/L26.
APA
Kacprzak, G. G., Yuan, T., Nanayakkara, T., Kobayashi, C., Tran, K.-V. H., Kewley, L. J., … Tomczak, A. (2015). The absence of an environmental dependence in the mass-metallicity relation at z=2. ASTROPHYSICAL JOURNAL LETTERS, 802(2). https://doi.org/10.1088/2041-8205/802/2/L26
Chicago author-date
Kacprzak, Glenn G, Tiantian Yuan, Themiya Nanayakkara, Chiaki Kobayashi, Kim-Vy H Tran, Lisa J Kewley, Karl Glazebrook, et al. 2015. “The Absence of an Environmental Dependence in the Mass-Metallicity Relation at Z=2.” ASTROPHYSICAL JOURNAL LETTERS 802 (2). https://doi.org/10.1088/2041-8205/802/2/L26.
Chicago author-date (all authors)
Kacprzak, Glenn G, Tiantian Yuan, Themiya Nanayakkara, Chiaki Kobayashi, Kim-Vy H Tran, Lisa J Kewley, Karl Glazebrook, Lee Spitler, Philip Taylor, Michael Cowley, Ivo Labbe, Caroline Straatman, and Adam Tomczak. 2015. “The Absence of an Environmental Dependence in the Mass-Metallicity Relation at Z=2.” ASTROPHYSICAL JOURNAL LETTERS 802 (2). doi:10.1088/2041-8205/802/2/L26.
Vancouver
1.
Kacprzak GG, Yuan T, Nanayakkara T, Kobayashi C, Tran K-VH, Kewley LJ, et al. The absence of an environmental dependence in the mass-metallicity relation at z=2. ASTROPHYSICAL JOURNAL LETTERS. 2015;802(2).
IEEE
[1]
G. G. Kacprzak et al., “The absence of an environmental dependence in the mass-metallicity relation at z=2,” ASTROPHYSICAL JOURNAL LETTERS, vol. 802, no. 2, 2015.
@article{8582622,
  abstract     = {We investigate the environmental dependence of the mass-metallicity relation at z = 2 with MOSFIRE/Keck as part of the ZFIRE survey. Here, we present the chemical abundance of a Virgo-like progenitor at z = 2.095 that has an established red sequence. We identified 43 cluster (< z > = 2.095 +/- 0.004) and 74 field galaxies (< z > = 2.195 +/- 0.083) for which we can measure metallicities. For the first time, we show that there is no discernible difference between the mass-metallicity relation of field and cluster galaxies to within 0.02 dex. Both our field and cluster galaxy mass-metallicity relations are consistent with recent field galaxy studies at z similar to 2. We present hydrodynamical simulations for which we derive mass-metallicity relations for field and cluster galaxies. We find at most a 0.1 dex offset toward more metal-rich simulated cluster galaxies. Our results from both simulations and observations suggest that environmental effects, if present, are small and are secondary to the ongoing inflow and outflow processes that are governed by galaxy halo mass.},
  articleno    = {L26},
  author       = {Kacprzak, Glenn G and Yuan, Tiantian and Nanayakkara, Themiya and Kobayashi, Chiaki and Tran, Kim-Vy H and Kewley, Lisa J and Glazebrook, Karl and Spitler, Lee and Taylor, Philip and Cowley, Michael and Labbe, Ivo and Straatman, Caroline and Tomczak, Adam},
  issn         = {2041-8205},
  journal      = {ASTROPHYSICAL JOURNAL LETTERS},
  keywords     = {STAR-FORMING GALAXIES,COSMOLOGICAL SIMULATIONS,QUIESCENT GALAXIES,HIGH-REDSHIFT,CLUSTER,STELLAR,EVOLUTION,CONFIRMATION,SPECTROSCOPY,POPULATION,cosmology: observations,galaxies: abundances,galaxies: evolution,galaxies: fundamental parameters,galaxies: high-redshift},
  language     = {eng},
  number       = {2},
  pages        = {5},
  title        = {The absence of an environmental dependence in the mass-metallicity relation at z=2},
  url          = {http://dx.doi.org/10.1088/2041-8205/802/2/L26},
  volume       = {802},
  year         = {2015},
}

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