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| Query : 2001MNRAS.324.1102L |
2001MNRAS.324.1102L - Mon. Not. R. Astron. Soc., 324, 1102-1108 (2001/July-2)
Discovery of molecular hydrogen line emission associated with methanol maser emission.
LEE J.-K., WALSH A.J., BURTON M.G. and ASHLEY M.C.B.
Abstract (from CDS):
We report the discovery of H2 line emission associated with 6.67-GHz methanol maser emission in massive star-forming regions. In our UNSWIRF/AAT observations, H2 1-0 S(1) line emission was found associated with an ultracompact Hii region IRAS 14567-5846 and isolated methanol maser sites in G318.95-0.20, IRAS 15278-5620 and IRAS 16076-5134. Owing to the lack of radio continuum in the latter three sources, we argue that their H2 emission is shock excited, while it is UV-fluorescently excited in IRAS 14567-5846. Within the positional uncertainties of 3arcsec, the maser sites correspond to the location of infrared sources. We suggest that 6.67-GHz methanol maser emission is associated with hot molecular cores, and propose an evolutionary sequence of events for the process of massive star formation.
Abstract Copyright: The Royal Astronomical Society
Journal keyword(s): masers - stars: formation - ISM: lines and bands - ISM: molecules - infrared: ISM
Simbad objects: 11
| Number of rows : 11 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2026 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | IRAS 13471-6120 | cor | 13 50 41.810 | -61 35 10.67 | ~ | 65 | 0 | |||||
| 2 | GAL 309.92+00.48 | HII | 13 50 42.0 | -61 35 09 | ~ | 34 | 0 | |||||
| 3 | RAFGL 4972S | cor | 15 00 34.52760 | -58 58 08.9076 | ~ | 51 | 1 | |||||
| 4 | OH 318.95-00.20 | Y*O | 15 00 55.35024 | -58 58 53.2848 | ~ | 85 | 1 | |||||
| 5 | IRAS 15278-5620 | HII | 15 31 43.2 | -56 30 25 | ~ | 35 | 1 | |||||
| 6 | OH 328.25-00.53 | Mas | 15 57 59.75 | -53 58 00.4 | ~ | 69 | 0 | |||||
| 7 | IRAS 15541-5349 | Y*? | 15 57 59.827 | -53 58 00.48 | ~ | 78 | 0 | |||||
| 8 | GAL 331.28-00.19 | HII | 16 11 26.6 | -51 41 57 | ~ | 56 | 0 | |||||
| 9 | GAL 009.62+00.19 | HII | 18 06 13.9 | -20 31 44 | ~ | 226 | 0 | |||||
| 10 | CORNISH G029.9559-00.0168 | Y*O | 18 46 04.18 | -02 39 21.3 | ~ | 385 | 0 | |||||
| 11 | IRAS 18449-0115 | cor | 18 47 34.27 | -01 12 43.2 | ~ | 430 | 1 |
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