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An SiO Maser Search off the Galactic Plane
- Publication Year :
- 2007
-
Abstract
- We have searched for the SiO J=1--0 v= 1 and 2 maser lines at ~ 43 GHz in 277 2MASS/MSX/IRAS sources off the Galactic plane (|b|> 3 deg), which resulted in 119 (112 new) detections. Among the new detections, are two very faint objects with MSX 12 micron flux densities below 2 Jy. These are likely to be O-rich AGB-stars associated with dwarf-galaxy tidal tails. The sample also includes medium bright MSX objects at moderately high Galactic latitudes (3 deg<|b|<5 deg) and in the IRAS gap at higher latitudes. A signature of a warp of the inner Galactic disk is found for a disk subsample. This warp appears relatively strongly in the area of 0<l<45 deg and 3<|b|<5 deg. We also found a group of stars that does not follow to the Galactic rotation. This feature appears in the Galactic disk at l~ 27 deg, and extends more than 15 deg in Galactic latitude, like a stream of tidal debris from a dwarf galaxy.<br />Comment: PASJ No.3 (June 25, 2007 issue in press)
- Subjects :
- Astrophysics
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.0704.1713
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1093/pasj/59.3.559