Report
A 6.7 GHz Methanol Maser Survey II. Low Galactic Latitudes
| العنوان: | A 6.7 GHz Methanol Maser Survey II. Low Galactic Latitudes |
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| المؤلفون: | Yang, Kai, Chen, Xi, Shen, Zhi-Qiang, Li, Xiao-Qiong, Wang, Jun-Zhi, Jiang, Dong-Rong, Li, Juan, Dong, Jian, Wu, Ya-Jun, Qiao, Hai-Hua |
| المصدر: | The Astrophysical Journal Supplement Series, 2019, 241(2): 18 |
| سنة النشر: | 2019 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Astrophysics of Galaxies |
| الوصف: | We report the results of our systematic survey for Galactic 6.7 GHz Class II CH$_3$OH maser emission toward a sample of young stellar objects. The survey was conducted with the Shanghai Tianma Radio Telescope (TMRT). The sample consists of 3348 sources selected from the all-sky \emph{Wide-Field Infrared Survey Explorer (WISE)} point source catalog. We have discussed the selection criteria in detail and the detection results of those at high Galactic latitudes (i.e. $|b|>$ 2$^\circ$) in a previous paper (paper I). Here, we present the results from the survey of those at low Galactic latitudes, i.e. $|b|<2^\circ$. Of 1875 selected \emph{WISE} point sources, 291 positions that were actually associated with 224 sources were detected with CH$_3$OH maser emission. Among them, 32 are newly detected. Majority of the newly detected sources are associated with bright WISE sources. The majority of the detected sources (209/224 = 93.3\%) are quite close to the Galactic Plane ($|b|<1^\circ$) and lie on the inner spiral arms with positive LSR velocities. Detection rate and the color-color distribution of our detection are all matched with our anticipation. Combining with detections from previous surveys, we compile a catalogue of 1085 sources with 6.7 GHz CH$_3$OH maser emission in our Galaxy. Comment: 46 pages, 9 figures, 6 tables |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.3847/1538-4365/ab06fb |
| URL الوصول: | http://arxiv.org/abs/1906.05801 |
| رقم الانضمام: | edsarx.1906.05801 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.3847/1538-4365/ab06fb |
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