| DOI | Resolve DOI: https://doi.org/10.1088/2041-8205/754/2/L24 |
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| Author | Search for: Chevance, M.; Search for: Weijmans, A.-M.; Search for: Damjanov, I.; Search for: Abraham, R.G.; Search for: Simard, L.1; Search for: Van Den Bergh, S.1; Search for: Caris, E.; Search for: Glazebrook, K. |
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| Affiliation | - National Research Council Canada. NRC Herzberg Institute of Astrophysics
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| Format | Text, Article |
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| Abstract | Recent deep Hubble Space Telescope WFC3 imaging suggests that a majority of compact quiescent massive galaxies at z 2 may contain disks. To investigate this claim, we have compared the ellipticity distribution of 31 carefully selected high-redshift massive quiescent compact galaxies to a set of mass-selected ellipticity and Sérsic index distributions obtained from two-dimensional structural fits to 40, 000 nearby galaxies from the Sloan Digital Sky Survey. A Kolmogorov-Smirnov test shows that the distribution of ellipticities for the high-redshift galaxies is consistent with the ellipticity distribution of a similarly chosen sample of massive early-type galaxies. However, the distribution of Sérsic indices for the high-redshift sample is inconsistent with that of local early-type galaxies, and instead resembles that of local disk-dominated populations. The mismatch between the properties of high-redshift compact galaxies and those of both local early-type and disk-dominated systems leads us to conclude that the basic structures of high-redshift compact galaxies probably do not closely resemble those of any single local galaxy population. Any galaxy population analog to the high-redshift compact galaxies that exists at the current epoch is either a mix of different types of galaxies, or possibly a unique class of objects on their own. © 2012. The American Astronomical Society. All rights reserved.. |
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| Publication date | 2012 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21269340 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | a09f075b-b542-4b5e-b502-be5dd3439b8b |
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| Record created | 2013-12-12 |
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| Record modified | 2020-04-21 |
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