A 6.7 GHz Methanol Maser Survey at High Galactic Latitudes
Journal Article
·
· Astrophysical Journal
- Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030 (China)
- Key Laboratory of Radio Astronomy, Chinese Academy of Sciences (China)
We performed a systematic 6.7 GHz Class II methanol maser survey using the Shanghai Tianma Radio Telescope toward targets selected from the all-sky Wide-Field Infrared Survey Explorer (WISE) point catalog. In this paper, we report the results from the survey of those at high Galactic latitudes, i.e., |b| > 2°. Of 1473 selected WISE point sources at high latitude, 17 point positions that were actually associated with 12 sources were detected with maser emission, reflecting the rarity (1%–2%) of methanol masers in the region away from the Galactic plane. Out of the 12 sources, 3 are detected for the first time. The spectral energy distribution at infrared bands shows that these new detected masers occur in the massive star-forming regions. Compared to previous detections, the methanol maser changes significantly in both spectral profiles and flux densities. The infrared WISE images show that almost all of these masers are located in the positions of the bright WISE point sources. Compared to the methanol masers at the Galactic plane, these high-latitude methanol masers provide good tracers for investigating the physics and kinematics around massive young stellar objects, because they are believed to be less affected by the surrounding cluster environment.
- OSTI ID:
- 22875805
- Journal Information:
- Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 2 Vol. 846; ISSN ASJOAB; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
Similar Records
STATISTICAL PROPERTIES OF 12.2 GHz METHANOL MASERS ASSOCIATED WITH A COMPLETE SAMPLE OF 6.7 GHz METHANOL MASERS
Class II 6.7 GHz Methanol Maser Association with Young Massive Cores Revealed by ALMA
AMMONIA AND CO OBSERVATIONS TOWARD LOW-LUMINOSITY 6.7 GHz METHANOL MASERS
Journal Article
·
Wed Jun 01 00:00:00 EDT 2011
· Astrophysical Journal
·
OSTI ID:21576760
Class II 6.7 GHz Methanol Maser Association with Young Massive Cores Revealed by ALMA
Journal Article
·
Thu Feb 09 23:00:00 EST 2017
· Astrophysical Journal
·
OSTI ID:22869391
AMMONIA AND CO OBSERVATIONS TOWARD LOW-LUMINOSITY 6.7 GHz METHANOL MASERS
Journal Article
·
Wed Sep 01 00:00:00 EDT 2010
· Astrophysical Journal
·
OSTI ID:21460121