A detailed study of the OH megamaser galaxy IRAS 17208-0014

Details A detailed study of the OH megamaser galaxy IRAS 17208-0014 A detailed study of the OH megamaser galaxy IRAS 17208-0014

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...208...39m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 208, no. 1-2, Jan. 1989, p. 39-46.

Astronomy and Astrophysics

Astronomy

33

Hydroxyl Emission, Infrared Sources (Astronomy), Interstellar Masers, Radio Galaxies, Forbidden Transitions, H Alpha Line, H I Regions, Interacting Galaxies, Molecular Clouds

Scientific paper

The far-IR source IRAS 17208-0014 has been identified with a galaxy of recession velocity cz = 12730 km/s as a strong 18-cm OH emitter with a 1667 MHz main line luminosity of 1054 solar luminosities. All three 1667, 1665, and 1720 MHz lines are detected in emission. An unusually wide (650 km/s) H I absorption line with no emission counterpart has been found, which suggests the existence of violent motions. MERLIN continuum interferometric observations yield a more precise value for the size of the central source of 220 pc x 270 pc. All the parameters are consistent with the classical interpretation of the OH megamaser phenomenon: a central continuum source is amplified by a foreground OH molecular cloud.

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