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The association between water kilomasers and compact radio sources in the starburst galaxy NGC2146

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arxiv astro-ph/0205263 v1 pith:BETMLVHL submitted 2002-05-16 astro-ph

The association between water kilomasers and compact radio sources in the starburst galaxy NGC2146

classification astro-ph
keywords wateremissioncompactgalaxykilomasersngc2146radiosources
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We report the detection of 22 GHz water vapor emission toward the starburst galaxy NGC2146, made using the Effelsberg 100-m telescope. Interferometric observations with the Very Large Array (VLA) show that a part of the emission originates from two prominent sites of star formation that are associated with compact radio continuum sources, likely ultra-compact HII regions. It is concluded that the emission arises from the most luminous and distant water `kilomasers' detected so far. Our data increase the number of water maser detections in northern galaxies (Dec > -30 deg) with 100 micron IRAS point source fluxes > 50 Jy to 18%.

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