Search for H I bubbles around Wolf-Rayet stars between l =302° and 312°
We have studied the distribution of neutral hydrogen gas (H I) surrounding Wolf-Rayet stars closer than 10 kpc in the section of our Galaxy between l = 302° and l = 312°. H I bubbles were observed surrounding WR 48, 52, 54, 57, and 61. We find that almost all WR stars located at galactic latitudes |...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00046256_v101_n2_p572_Niemela |
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todo:paper_00046256_v101_n2_p572_Niemela2023-10-03T13:59:29Z Search for H I bubbles around Wolf-Rayet stars between l =302° and 312° Niemela, V.S. Cappa De Nicolau, C.E. We have studied the distribution of neutral hydrogen gas (H I) surrounding Wolf-Rayet stars closer than 10 kpc in the section of our Galaxy between l = 302° and l = 312°. H I bubbles were observed surrounding WR 48, 52, 54, 57, and 61. We find that almost all WR stars located at galactic latitudes |b| higher than 2° appear associated with H I bubbles. The fact that we do not observe H I bubbles around WR stars close to b = 0°, is most probably a selection effect, since due to the greatly increased gas density, these bubbles would be smaller than our spatial resolution. In the H I bubbles observed around the WC type stars, WR 48, 52, and 57, the star appears always located near the higher density border closest to the galactic plane. The two WN-type stars, WR 54 and 61, appear locafed near the center of large H I bubbles. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00046256_v101_n2_p572_Niemela |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
We have studied the distribution of neutral hydrogen gas (H I) surrounding Wolf-Rayet stars closer than 10 kpc in the section of our Galaxy between l = 302° and l = 312°. H I bubbles were observed surrounding WR 48, 52, 54, 57, and 61. We find that almost all WR stars located at galactic latitudes |b| higher than 2° appear associated with H I bubbles. The fact that we do not observe H I bubbles around WR stars close to b = 0°, is most probably a selection effect, since due to the greatly increased gas density, these bubbles would be smaller than our spatial resolution. In the H I bubbles observed around the WC type stars, WR 48, 52, and 57, the star appears always located near the higher density border closest to the galactic plane. The two WN-type stars, WR 54 and 61, appear locafed near the center of large H I bubbles. |
| format |
JOUR |
| author |
Niemela, V.S. Cappa De Nicolau, C.E. |
| spellingShingle |
Niemela, V.S. Cappa De Nicolau, C.E. Search for H I bubbles around Wolf-Rayet stars between l =302° and 312° |
| author_facet |
Niemela, V.S. Cappa De Nicolau, C.E. |
| author_sort |
Niemela, V.S. |
| title |
Search for H I bubbles around Wolf-Rayet stars between l =302° and 312° |
| title_short |
Search for H I bubbles around Wolf-Rayet stars between l =302° and 312° |
| title_full |
Search for H I bubbles around Wolf-Rayet stars between l =302° and 312° |
| title_fullStr |
Search for H I bubbles around Wolf-Rayet stars between l =302° and 312° |
| title_full_unstemmed |
Search for H I bubbles around Wolf-Rayet stars between l =302° and 312° |
| title_sort |
search for h i bubbles around wolf-rayet stars between l =302° and 312° |
| url |
http://hdl.handle.net/20.500.12110/paper_00046256_v101_n2_p572_Niemela |
| work_keys_str_mv |
AT niemelavs searchforhibubblesaroundwolfrayetstarsbetweenl302and312 AT cappadenicolauce searchforhibubblesaroundwolfrayetstarsbetweenl302and312 |
| _version_ |
1782027466636787712 |