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Title:
The Green Bank Telescope OH Megamaser Survey
Authors:
Kent, B.; Braatz, J.; Darling, J.
Affiliation:
AA(NRAO/West Virginia Univ.), AB(NRAO), AC(Carnegie Observatories)
Publication:
American Astronomical Society, 201st AAS Meeting, #52.16; Bulletin of the American Astronomical Society, Vol. 34, p.1194
Publication Date:
12/2002
Origin:
AAS
Bibliographic Code:
2002AAS...201.5216K

Abstract

The Green Bank Telescope has been used to search for OH Megamasers (OHMs) in ultra-luminous infrared galaxies. This survey, begun in June 2002, complements extensive searches done at the Arecibo Observatory (Darling & Giovanelli 2002) and elsewhere which in total have produced a catalog of approximately 100 known OHMs. Using similar selection methods as Darling and Giovanelli, we have observed 47 sources and detected 10 new OHMs. Intensities of the new sources detected in our survey range from 4 to over 70 mJy. The survey is an ongoing effort. Candidate sources were taken from the Point Source Catalog Redshift survey (Saunders et al. 2000). We selected sources at the high end of the 60 micron power distribution, and we eliminated those in the declination range covered by Arecibo (0 deg < declination < 37 deg). We also restricted the redshift range of candidates (z < 0.25) so that the OH lines fall within the L-band frequency range. Spectra of both detected and undetected galaxies and other preliminary results of this survey are available online at http://www.gb.nrao.edu/ bkent/ohmaser.html. This project was supported by the National Science Foundation Research Experiences for Undergraduates Program.
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