Searching for evidence of interaction between the of star HD 229196 and the interstellar medium
Massive stars with strong stellar winds are expected to have a huge impact on their interstellar surroundings, an effect which, in a surprisingly large number of cases, is not observed. This work is part of a concerted effort to obtain a better and more homogeneous observational data base with which...
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2008
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v386_n3_p1739_Pineault http://hdl.handle.net/20.500.12110/paper_00358711_v386_n3_p1739_Pineault |
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paper:paper_00358711_v386_n3_p1739_Pineault2023-06-08T15:01:24Z Searching for evidence of interaction between the of star HD 229196 and the interstellar medium ISM: bubbles ISM: structure Stars: individual: HD 229196 Stars: mass-loss Stars: winds, outflows Massive stars with strong stellar winds are expected to have a huge impact on their interstellar surroundings, an effect which, in a surprisingly large number of cases, is not observed. This work is part of a concerted effort to obtain a better and more homogeneous observational data base with which to test the predictions of theoretical models. Analysis of the interstellar medium around the Of star HD 229196 shows that it coincides (in projection) with a region of lower radio continuum emission. This suggests that the star has shaped the surrounding interstellar medium via its ionizing flux and stellar wind. However, we find no clear evidence of the star's action in atomic hydrogen images. The radio continuum morphology and absence of a clear expanding H i shell are consistent with the possibility that the star, which is travelling supersonically at ∼30 km s-1 with respect to its local interstellar medium, is creating a weak bow shock. We cannot however rule out the possibility that the observed asymmetry is due to an inhomogeneous interstellar density distribution. We use data from the Canadian Galactic Plane Survey to carry out this study. © 2008 RAS. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v386_n3_p1739_Pineault http://hdl.handle.net/20.500.12110/paper_00358711_v386_n3_p1739_Pineault |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
topic |
ISM: bubbles ISM: structure Stars: individual: HD 229196 Stars: mass-loss Stars: winds, outflows |
spellingShingle |
ISM: bubbles ISM: structure Stars: individual: HD 229196 Stars: mass-loss Stars: winds, outflows Searching for evidence of interaction between the of star HD 229196 and the interstellar medium |
topic_facet |
ISM: bubbles ISM: structure Stars: individual: HD 229196 Stars: mass-loss Stars: winds, outflows |
description |
Massive stars with strong stellar winds are expected to have a huge impact on their interstellar surroundings, an effect which, in a surprisingly large number of cases, is not observed. This work is part of a concerted effort to obtain a better and more homogeneous observational data base with which to test the predictions of theoretical models. Analysis of the interstellar medium around the Of star HD 229196 shows that it coincides (in projection) with a region of lower radio continuum emission. This suggests that the star has shaped the surrounding interstellar medium via its ionizing flux and stellar wind. However, we find no clear evidence of the star's action in atomic hydrogen images. The radio continuum morphology and absence of a clear expanding H i shell are consistent with the possibility that the star, which is travelling supersonically at ∼30 km s-1 with respect to its local interstellar medium, is creating a weak bow shock. We cannot however rule out the possibility that the observed asymmetry is due to an inhomogeneous interstellar density distribution. We use data from the Canadian Galactic Plane Survey to carry out this study. © 2008 RAS. |
title |
Searching for evidence of interaction between the of star HD 229196 and the interstellar medium |
title_short |
Searching for evidence of interaction between the of star HD 229196 and the interstellar medium |
title_full |
Searching for evidence of interaction between the of star HD 229196 and the interstellar medium |
title_fullStr |
Searching for evidence of interaction between the of star HD 229196 and the interstellar medium |
title_full_unstemmed |
Searching for evidence of interaction between the of star HD 229196 and the interstellar medium |
title_sort |
searching for evidence of interaction between the of star hd 229196 and the interstellar medium |
publishDate |
2008 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v386_n3_p1739_Pineault http://hdl.handle.net/20.500.12110/paper_00358711_v386_n3_p1739_Pineault |
_version_ |
1768542542864842752 |