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arXiv · 1309.2948

Discovery of Nine Intermediate Redshift Compact Quiescent Galaxies in the Sloan Digital Sky Survey

Ivana Damjanov·Igor Chilingarian·Ho Seong Hwang·Margaret J. Geller
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Abstract

We identify nine galaxies with dynamical masses of M_dyn>10^10 M_sol as photometric point sources, but with redshifts between z=0.2 and z=0.6, in the Sloan Digital Sky Survey (SDSS) spectro-photometric database. All nine galaxies have archival Hubble Space Telescope (HST) images. Surface brightness profile fitting confirms that all nine galaxies are extremely compact (with circularized half-light radii between 0.4 and 6.6 kpc and the median value of 0.74 kpc) for their velocity dispersion (110 1 galaxies and the other eight objects follow the high-redshift dynamical size-mass relation.

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Ivana Damjanov, Igor Chilingarian, Ho Seong Hwang, Margaret J. Geller. 2013-09-11. Discovery of Nine Intermediate Redshift Compact Quiescent Galaxies in the Sloan Digital Sky Survey. https://doi.org/10.1088/2041-8205%2F775%2F2%2Fl48

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