ZFIRE: The kinematics of star-forming galaxies as a function of environment at z ∼ 2
Article
Article Title | ZFIRE: The kinematics of star-forming galaxies as a function of environment at z ∼ 2 |
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ERA Journal ID | 45091 |
Article Category | Article |
Authors | Alcorn, Leo Y., Tran, Kim-Vy H., Kacprzak, Glenn G., Nanayakkara, Themiya, Straatman, Caroline, Yuan, Tiantian, Allen, Rebecca J., Cowley, Michael, Davé, Romeel, Glazebrook, Karl, Kewley, Lisa J., Labbé, Ivo, Quadri, Ryan, Spitler, Lee R. and Tomczak, Adam |
Journal Title | The Astrophysical Journal Letters |
Journal Citation | 825 (1), pp. 1-6 |
Article Number | L2 |
Number of Pages | 6 |
Year | 2016 |
Publisher | IOP Publishing |
Place of Publication | United Kingdom |
ISSN | 2041-8205 |
2041-8213 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/2041-8205/825/1/L2 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/2041-8205/825/1/L2 |
Abstract | We perform a kinematic analysis of galaxies at z ∼ 2 in the COSMOS legacy field using near-infrared (NIR) spectroscopy from Keck/MOSFIRE as part of the ZFIRE survey. Our sample consists of 75 Ks-band selected star-forming galaxies from the ZFOURGE survey with stellar masses ranging from log(M ∗/M o) = 9.0-11.0, 28 of which are members of a known overdensity at z = 2.095. We measure H emission-line integrated velocity dispersions (σ int) from 50 to 230 km s-1, consistent with other emission-line studies of z ∼ 2 field galaxies. From these data we estimate virial, stellar, and gas masses and derive correlations between these properties for cluster and field galaxies at z ∼ 2. We find evidence that baryons dominate within the central effective radius. However, we find no statistically significant differences between the cluster and the field, and conclude that the kinematics of star-forming galaxies at z ∼ 2 are not significantly different between the cluster and field environments. |
Keywords | galaxies: evolution |
Contains Sensitive Content | Does not contain sensitive content |
Public Notes | For access to this article, please click on the URL link provided. |
Funder | National Science Foundation |
Byline Affiliations | Texas A&M University, United States |
Swinburne University of Technology | |
Leiden University, Netherlands | |
Australian National University | |
Australian Astronomical Observatory, Australia | |
Macquarie University | |
University of the Western Cape, South Africa | |
South African Astronomical Observatory, South Africa | |
African Institute for Mathematical Sciences, South Africa | |
University of California, United States |
https://research.usq.edu.au/item/w45xw/zfire-the-kinematics-of-star-forming-galaxies-as-a-function-of-environment-at-z-2
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