| Issue |
A&A
Volume 485, Number 3, July III 2008
|
|
|---|---|---|
| Page(s) | 729 - 734 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361:200809472 | |
| Published online | 08 April 2008 | |
A high-sensitivity 6.7 GHz methanol maser survey toward H
O sources*
1
Max-Planck-Institute für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany e-mail: xuye@mpifr-bonn.mpg.de
2
Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, PR China
3
Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 20030, PR China
Received:
28
January
2008
Accepted:
6
March
2008
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 
, is associated with massive stars, as inferred from its infrared luminosity.
Key words: masers / surveys / stars: formation / ISM: molecules
© ESO, 2008
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