Associated MgII Absorption in Red Quasars

Details Associated MgII Absorption in Red Quasars Associated MgII Absorption in Red Quasars

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...184.1109a&link_type=abstract

American Astronomical Society, 184th AAS Meeting, #11.09; Bulletin of the American Astronomical Society, Vol. 26, p.875

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In a spectroscopic survey of 56 intrinsically faint, steep-spectrum quasars, we detected an excess of quasars with associated \MgII\ absorption line systems, in which zabs ~ zem. This is in contrast to other surveys using apparent magnitude selected samples which have found no such excess above the background expected from distributed absorbers. In our sample there is a strong correlation between very red rest-frame B-V colors of the quasar and the presence of associated \MgII\ absorption. In order to further understand this result, we have obtained deep R-band images of two of the red quasars (3C68.1 and 3C212) and begun a spectroscopic survey of quasars selected for very red B-V color. In 3C68.1 (z=1.24), we observe a prominent extension outside the quasar point source, and what is most likely a foreground cluster. Spectroscopy of three faint red quasars revealed no associated \MgII\ absorption lines. The implications of these results are discussed.

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