A survey for hydroxyl in the THOR pilot region around W43
We report on observations of the hydroxyl radical (OH) within The Hι, OH, Recombination line survey (THOR) pilot region. The region is bounded approximately between Galactic coordinates l = 29 .2 to 31 .5 and b = −1 .0 to +1 .0 and includes the high-mass star-forming region W43. We identify 103 mas...
| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Journal Article |
| Published: |
Oxford University Press
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/45920 |
| _version_ | 1848757418124640256 |
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| author | Walsh, Andrew Beuther, H. Bihr, S. Johnston, K. Dawson, J. Ott, J. Longmore, S. Luong, Q. Klessen, R. Ragan, S. McClure-Griffiths, N. Brunthaler, A. Urquhart, J. Menten, K. Bigiel, F. Wyrowski, F. Rugel, M. |
| author_facet | Walsh, Andrew Beuther, H. Bihr, S. Johnston, K. Dawson, J. Ott, J. Longmore, S. Luong, Q. Klessen, R. Ragan, S. McClure-Griffiths, N. Brunthaler, A. Urquhart, J. Menten, K. Bigiel, F. Wyrowski, F. Rugel, M. |
| author_sort | Walsh, Andrew |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We report on observations of the hydroxyl radical (OH) within The Hι, OH, Recombination line survey (THOR) pilot region. The region is bounded approximately between Galactic coordinates l = 29 .2 to 31 .5 and b = −1 .0 to +1 .0 and includes the high-mass star-forming region W43. We identify 103 maser sites, including 72 with 1612 MHz masers, 42 showing masers in either of the main-line transitions at 1665 and 1667 MHz and four showing 1720 MHz masers. Most maser sites with either main-line or 1720 MHz emission are associated with star formation, whereas most of the 1612 MHz masers are associated with evolved stars. We find that nearly all of the main-line maser sites are co-spatial with an infrared source, detected by GLIMPSE. We also find diffuse OH emission, as well as OH in absorption towards selected unresolved or partially resolved sites. Extended OH absorption is found towards the well-known star-forming complex W43 Main. |
| first_indexed | 2025-11-14T09:27:46Z |
| format | Journal Article |
| id | curtin-20.500.11937-45920 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:27:46Z |
| publishDate | 2015 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-459202017-09-13T14:24:11Z A survey for hydroxyl in the THOR pilot region around W43 Walsh, Andrew Beuther, H. Bihr, S. Johnston, K. Dawson, J. Ott, J. Longmore, S. Luong, Q. Klessen, R. Ragan, S. McClure-Griffiths, N. Brunthaler, A. Urquhart, J. Menten, K. Bigiel, F. Wyrowski, F. Rugel, M. We report on observations of the hydroxyl radical (OH) within The Hι, OH, Recombination line survey (THOR) pilot region. The region is bounded approximately between Galactic coordinates l = 29 .2 to 31 .5 and b = −1 .0 to +1 .0 and includes the high-mass star-forming region W43. We identify 103 maser sites, including 72 with 1612 MHz masers, 42 showing masers in either of the main-line transitions at 1665 and 1667 MHz and four showing 1720 MHz masers. Most maser sites with either main-line or 1720 MHz emission are associated with star formation, whereas most of the 1612 MHz masers are associated with evolved stars. We find that nearly all of the main-line maser sites are co-spatial with an infrared source, detected by GLIMPSE. We also find diffuse OH emission, as well as OH in absorption towards selected unresolved or partially resolved sites. Extended OH absorption is found towards the well-known star-forming complex W43 Main. 2015 Journal Article http://hdl.handle.net/20.500.11937/45920 10.1093/mnras/stv2446 Oxford University Press fulltext |
| spellingShingle | Walsh, Andrew Beuther, H. Bihr, S. Johnston, K. Dawson, J. Ott, J. Longmore, S. Luong, Q. Klessen, R. Ragan, S. McClure-Griffiths, N. Brunthaler, A. Urquhart, J. Menten, K. Bigiel, F. Wyrowski, F. Rugel, M. A survey for hydroxyl in the THOR pilot region around W43 |
| title | A survey for hydroxyl in the THOR pilot region around W43 |
| title_full | A survey for hydroxyl in the THOR pilot region around W43 |
| title_fullStr | A survey for hydroxyl in the THOR pilot region around W43 |
| title_full_unstemmed | A survey for hydroxyl in the THOR pilot region around W43 |
| title_short | A survey for hydroxyl in the THOR pilot region around W43 |
| title_sort | survey for hydroxyl in the thor pilot region around w43 |
| url | http://hdl.handle.net/20.500.11937/45920 |