Strong H2O maser emission from the peculiar galaxy NGC 3079

Details Strong H2O maser emission from the peculiar galaxy NGC 3079 Strong H2O maser emission from the peculiar galaxy NGC 3079

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...141l...1h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 141, no. 1, Dec. 1984, p. L1-L3.

Astronomy and Astrophysics

Astrophysics

116

Galactic Nuclei, Interstellar Masers, Luminosity, Molecular Clouds, Peculiar Galaxies, Water Masers, Emission Spectra, Galaxies, Interacting Galaxies, Radiant Flux Density

Scientific paper

H2O maser emission with an (isotropic) total luminosity of ˜500 L&sun; has been detected in the peculiar galaxy NGC 3079, within 5" of the nucleus; this is the most powerful maser yet detected. The peak flux density is 11 Jy. The H2O features, centered on vLSR= 960 km s-1, cover a velocity range of at least 140 km s-1. A possible detection of a ˜200 L&sun; H2O maser is also reported. Less luminous maser emission, detected by Claussen et al. (1984) towards NGC 1068, NGC 3034, and NGC 4258, is confirmed. We failed, however, to obtain a clear detection toward NGC 6946. H2O pump mechanisms are discussed in view of their ability to produce the luminosities observed.

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