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ZFIRE : galaxy cluster kinematics, Hα star formation rates, and gas phase metallicities of XMM-LSS J02182-05102 at z(cl)=1.6233

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Abstract
We spectroscopically survey the galaxy cluster XMM-LSS J02182-05102 (hereafter IRC 0218) using LRIS (optical) and MOSFIRE (near-infrared) on Keck I as part of the ZFIRE survey. IRC 0218 has a narrow redshift range of 1.612 < z(spec) < 1.635 defined by 33 members of which 20 are at R-proj < 1 Mpc. The cluster redshift and velocity dispersion are z(cl) = 1.6233 +/- 0.0003 and sigma(c1) = 254 +/- 50 km s(-1). We reach NIR line sensitivities of similar to 0.3 x 10(-17) erg s(-1) cm(-2) that, combined with multi-wavelength photometry, provide extinction-corrected H alpha star formation rates (SFR), gas phase metallicities from [N II]/H alpha, and stellar masses. We measure an integrated H alpha SFR of similar to 325 M-circle dot yr(-1) (26 members; R-proj < 2 Mpc) and show that the elevated star formation in the cluster core (R-proj < 0.25 Mpc) is driven by the concentration of star-forming members, but the average SFR per H alpha-detected galaxy is half that of members at R-proj similar to 1 Mpc. However, we do not detect any environmental imprint when comparing attenuation and gas phase metallicities: the cluster galaxies show similar trends with M-star as to the field, e.g., more massive galaxies have larger stellar attenuation. IRC 0218's gas phase metallicity-M-star, relation (MZR) is offset to lower metallicities relative to z similar to 0 and has a slope of 0.13 +/- 0.10. Comparing the MZR in IRC 0218 to the COSMOS cluster at z = 2.1 shows no evolution (Delta t similar to 1 Gyr): the MZR for both galaxy clusters are remarkably consistent with each other and virtually identical to several field surveys at z similar to 2.
Keywords
SIMILAR-TO 2, FORMATION-DENSITY RELATION, HIGH-REDSHIFT GALAXIES, INITIAL MASS FUNCTION, FMOS-COSMOS SURVEY, FORMING GALAXIES, SPECTROSCOPIC CONFIRMATION, COSMOLOGICAL SIMULATIONS, QUIESCENT, GALAXIES, DUST ATTENUATION, galaxies: abundances, galaxies: clusters: individual (XMM-LSS, J02182-05102), galaxies: evolution, galaxies: fundamental parameters

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MLA
Tran, Kim-Vy H., et al. “ZFIRE : Galaxy Cluster Kinematics, Hα Star Formation Rates, and Gas Phase Metallicities of XMM-LSS J02182-05102 at z(Cl)=1.6233.” ASTROPHYSICAL JOURNAL, vol. 811, no. 1, 2015, doi:10.1088/0004-637X/811/1/28.
APA
Tran, K.-V. H., Nanayakkara, T., Yuan, T., Kacprzak, G. G., Glazebrook, K., Kewley, L. J., … Tomczak, A. (2015). ZFIRE : galaxy cluster kinematics, Hα star formation rates, and gas phase metallicities of XMM-LSS J02182-05102 at z(cl)=1.6233. ASTROPHYSICAL JOURNAL, 811(1). https://doi.org/10.1088/0004-637X/811/1/28
Chicago author-date
Tran, Kim-Vy H, Themiya Nanayakkara, Tiantian Yuan, Glenn G Kacprzak, Karl Glazebrook, Lisa J Kewley, Ivelina Momcheva, et al. 2015. “ZFIRE : Galaxy Cluster Kinematics, Hα Star Formation Rates, and Gas Phase Metallicities of XMM-LSS J02182-05102 at z(Cl)=1.6233.” ASTROPHYSICAL JOURNAL 811 (1). https://doi.org/10.1088/0004-637X/811/1/28.
Chicago author-date (all authors)
Tran, Kim-Vy H, Themiya Nanayakkara, Tiantian Yuan, Glenn G Kacprzak, Karl Glazebrook, Lisa J Kewley, Ivelina Momcheva, Casey J Papovich, Ryan Quadri, Greg Rudnick, Amelie Saintonge, Lee R Spitler, Caroline Straatman, and Adam Tomczak. 2015. “ZFIRE : Galaxy Cluster Kinematics, Hα Star Formation Rates, and Gas Phase Metallicities of XMM-LSS J02182-05102 at z(Cl)=1.6233.” ASTROPHYSICAL JOURNAL 811 (1). doi:10.1088/0004-637X/811/1/28.
Vancouver
1.
Tran K-VH, Nanayakkara T, Yuan T, Kacprzak GG, Glazebrook K, Kewley LJ, et al. ZFIRE : galaxy cluster kinematics, Hα star formation rates, and gas phase metallicities of XMM-LSS J02182-05102 at z(cl)=1.6233. ASTROPHYSICAL JOURNAL. 2015;811(1).
IEEE
[1]
K.-V. H. Tran et al., “ZFIRE : galaxy cluster kinematics, Hα star formation rates, and gas phase metallicities of XMM-LSS J02182-05102 at z(cl)=1.6233,” ASTROPHYSICAL JOURNAL, vol. 811, no. 1, 2015.
@article{8582618,
  abstract     = {We spectroscopically survey the galaxy cluster XMM-LSS J02182-05102 (hereafter IRC 0218) using LRIS (optical) and MOSFIRE (near-infrared) on Keck I as part of the ZFIRE survey. IRC 0218 has a narrow redshift range of 1.612 < z(spec) < 1.635 defined by 33 members of which 20 are at R-proj < 1 Mpc. The cluster redshift and velocity dispersion are z(cl) = 1.6233 +/- 0.0003 and sigma(c1) = 254 +/- 50 km s(-1). We reach NIR line sensitivities of similar to 0.3 x 10(-17) erg s(-1) cm(-2) that, combined with multi-wavelength photometry, provide extinction-corrected H alpha star formation rates (SFR), gas phase metallicities from [N II]/H alpha, and stellar masses. We measure an integrated H alpha SFR of similar to 325 M-circle dot yr(-1) (26 members; R-proj < 2 Mpc) and show that the elevated star formation in the cluster core (R-proj < 0.25 Mpc) is driven by the concentration of star-forming members, but the average SFR per H alpha-detected galaxy is half that of members at R-proj similar to 1 Mpc. However, we do not detect any environmental imprint when comparing attenuation and gas phase metallicities: the cluster galaxies show similar trends with M-star as to the field, e.g., more massive galaxies have larger stellar attenuation. IRC 0218's gas phase metallicity-M-star, relation (MZR) is offset to lower metallicities relative to z similar to 0 and has a slope of 0.13 +/- 0.10. Comparing the MZR in IRC 0218 to the COSMOS cluster at z = 2.1 shows no evolution (Delta t similar to 1 Gyr): the MZR for both galaxy clusters are remarkably consistent with each other and virtually identical to several field surveys at z similar to 2.},
  articleno    = {28},
  author       = {Tran, Kim-Vy H and Nanayakkara, Themiya and Yuan, Tiantian and Kacprzak, Glenn G and Glazebrook, Karl and Kewley, Lisa J and Momcheva, Ivelina and Papovich, Casey J and Quadri, Ryan and Rudnick, Greg and Saintonge, Amelie and Spitler, Lee R and Straatman, Caroline and Tomczak, Adam},
  issn         = {0004-637X},
  journal      = {ASTROPHYSICAL JOURNAL},
  keywords     = {SIMILAR-TO 2,FORMATION-DENSITY RELATION,HIGH-REDSHIFT GALAXIES,INITIAL MASS FUNCTION,FMOS-COSMOS SURVEY,FORMING GALAXIES,SPECTROSCOPIC CONFIRMATION,COSMOLOGICAL SIMULATIONS,QUIESCENT,GALAXIES,DUST ATTENUATION,galaxies: abundances,galaxies: clusters: individual (XMM-LSS,J02182-05102),galaxies: evolution,galaxies: fundamental parameters},
  language     = {eng},
  number       = {1},
  pages        = {16},
  title        = {ZFIRE : galaxy cluster kinematics, Hα star formation rates, and gas phase metallicities of XMM-LSS J02182-05102 at z(cl)=1.6233},
  url          = {http://dx.doi.org/10.1088/0004-637X/811/1/28},
  volume       = {811},
  year         = {2015},
}

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