The Arecibo OH Megamaser Survey and the Galaxy Merger Rate

Details The Arecibo OH Megamaser Survey and the Galaxy Merger Rate The Arecibo OH Megamaser Survey and the Galaxy Merger Rate

2000-09-13

arxiv.org/abs/astro-ph/0009205v1

Astronomy and Astrophysics

Astrophysics

2 pages, 1 figure; requires newpasp.sty. To appear in the proceedings of the conference "Gas and Galaxy Evolution" (ASP Confer

Scientific paper

We present the current results of a survey for OH megamasers (OHMs) underway at the Arecibo Observatory. The survey is 2/3 complete and has produced a high OHM detection rate (1 in 6) from a redshift-selected sample of IRAS galaxies. The survey will relate the OHM luminosity function to the galaxy merger rate, allowing subsequent blind OHM surveys to measure the galaxy merger rate as a function of cosmic time. The survey has also made the first detection of strong variability in OHMs. Variability will provide a powerful tool for understanding the small-scale physical settings and mechanisms of OHMs.

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