H2O and OH maser emission from bright IRAS galaxies

Details H2O and OH maser emission from bright IRAS galaxies H2O and OH maser emission from bright IRAS galaxies

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...155..193h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 155, no. 1, Jan. 1986, p. 193-199.

Astronomy and Astrophysics

Astrophysics

76

Galactic Radiation, Hydroxyl Emission, Interstellar Masers, Water Masers, Carbon Monoxide, Infrared Spectra, Irregular Galaxies, Luminosity, Molecular Spectra, Point Sources

Scientific paper

IC10's H2O maser emission, with its isotropic luminosity of 1 solar luminosity, is the most powerful detected to date in a compact irregular galaxy. The main velocity component is highly variable, and might represent a flare more intense than that found in Orion; CO is also detected at -330 km/sec. The molecular mass within the beam is determined and compared with estimates of the H I mass and the total mass of IC10. A systematic investigation is conducted on the basis of H2O data from a sample of 43 luminous IRAS galaxies, and correlations are found between the presence of strong H2O or OH masers and the 60/100-micron and 12/25-micron color temperatures. An anticorrelation is noted between the 25/60 and 60/100-micron vs. 12/25-micron color temperatures in the sample of bright extragalactic IRAS sources.

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