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Observations of extragalactic masers in bright IRAS sources

A. Tarchi·C. Henkel·A. B. Peck·L. Moscadelli·K. M. Menten
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Abstract

We report the first results of an ongoing survey at 22 GHz with the 100-m Effelsberg telescope to search for water maser emission in bright IRAS sources. We have detected water vapor emission in IC 342. The maser, associated with a star forming region ~10-15 arcsec west of the nucleus, consists of a single 0.5 km/s wide feature and reaches an isotropic luminosity of 0.01 L(sun) (D = 1.8 Mpc). Our detection raises the detection rate among northern galaxies with IRAS point source fluxes S(100micron) > 50 Jy to 16%.

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A. Tarchi, C. Henkel, A. B. Peck, L. Moscadelli, K. M. Menten. 2002-06-04. Observations of extragalactic masers in bright IRAS sources. https://arxiv.org/abs/astro-ph/0206053

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