期刊
ASTRONOMY & ASTROPHYSICS
卷 485, 期 3, 页码 729-U49出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361:200809472
关键词
masers; surveys; stars : formation; ISM : molecules
We present the results of a high sensitivity survey for 6.7 GHz methanol masers towards 22 GHz water masers using the 100 m Efflesberg telescope. A total of 89 sources were observed and 10 new methanol masers were detected. The new detections are relatively faint with peak flux densities of between 0.5 and 4.0 Jy. A nil detection rate from low-mass star forming regions enhances the conclusion that the masers are only associated with massive star formation. Even the faintest methanol maser in our survey, with a luminosity of 1.1 x 10(-9) L-circle dot, is associated with massive stars, as inferred from its infrared luminosity.
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