A New Ultra-dense Group of Obscured Emission-Line Galaxies

Details A New Ultra-dense Group of Obscured Emission-Line Galaxies A New Ultra-dense Group of Obscured Emission-Line Galaxies

1999-07-22

arxiv.org/abs/astro-ph/9907304v1

Astronomy and Astrophysics

Astrophysics

15 pages,LaTeX, 2figures. A Postscript figure with spectra is available at ftp://astro.uibk.ac.at/pub/weinberger/ . Accepted f

Scientific paper

10.1086/312211

We present the discovery of an isolated compact group of galaxies that is extremely dense (median projected galaxy separation: 6.9 kpc), has a very low velocity dispersion ($\sigma_{\rm 2D}$ = 67 km s$^{-1}$), and where all observed members show emission lines and are morphologically disturbed. These properties, together with the lack of spirals and the presence of a prominent tidal tail make this group one of the most evolved compact groups.

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