US 3215: an Active gE2 Galaxy

Details US 3215: an Active gE2 Galaxy US 3215: an Active gE2 Galaxy

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997pasp..109.1149h&link_type=abstract

Publications of the Astronomical Society of the Pacific, v.109, p.1149-1153

Astronomy and Astrophysics

Astronomy

2

Galaxies: Individual: Us 3215, Quasars: Emission Line, Galaxies: Active

Scientific paper

The object US 3215 is an optically variable galaxy with very broad Balmer lines, relatively strong forbidden lines and a weak UV-excess continuum. It has been classed as a Seyfert 1 galaxy. We report that optical CCD images taken in excellent seeing reveal a central mini-quasar in an elliptical galaxy with a de Vaucouleurs profile extending across an angular diameter of \sim arcsec. This corresponds to a linear size of almost 50 kpc (Ho = 50 km /sec/Mpc). Our data indicate that the host galaxy is of type gE2 and is the gravitational center of a cluster of galaxies. A companion galaxy is observed at a projected distance of 24 kpc. H and K magnitudes were obtained and the index H - K is consistent with quasar colors. A VLA snapshot at 1425 MHz gives an upper limit to radio emission at a flux level of 0.2 mJy beam -1 that is consistent with the Sy 1 designation. Thus US 3215 appears to be an active broad-line cluster gE2 galaxy. (SECTION: Quasars and Active Galactic Nuclei)

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