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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Formato: | Articulo |
Lenguaje: | Inglés |
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2008
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/84284 |
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I19-R120-10915-84284 |
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institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Ciencias Astronómicas ISM: bubbles ISM: structure Stars: individual: HD 229196 Stars: mass-loss Stars: winds, outflows |
spellingShingle |
Ciencias Astronómicas ISM: bubbles ISM: structure Stars: individual: HD 229196 Stars: mass-loss Stars: winds, outflows Pineault, Serge Arnal, Edmundo Marcelo Cappa, Cristina Elisabet Cichowolski, Silvina Normandeau, M. St-Louis, N. Searching for evidence of interaction between the of star HD 229196 and the interstellar medium |
topic_facet |
Ciencias Astronómicas 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<SUP>-1</SUP> 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. |
format |
Articulo Articulo |
author |
Pineault, Serge Arnal, Edmundo Marcelo Cappa, Cristina Elisabet Cichowolski, Silvina Normandeau, M. St-Louis, N. |
author_facet |
Pineault, Serge Arnal, Edmundo Marcelo Cappa, Cristina Elisabet Cichowolski, Silvina Normandeau, M. St-Louis, N. |
author_sort |
Pineault, Serge |
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 |
http://sedici.unlp.edu.ar/handle/10915/84284 |
work_keys_str_mv |
AT pineaultserge searchingforevidenceofinteractionbetweentheofstarhd229196andtheinterstellarmedium AT arnaledmundomarcelo searchingforevidenceofinteractionbetweentheofstarhd229196andtheinterstellarmedium AT cappacristinaelisabet searchingforevidenceofinteractionbetweentheofstarhd229196andtheinterstellarmedium AT cichowolskisilvina searchingforevidenceofinteractionbetweentheofstarhd229196andtheinterstellarmedium AT normandeaum searchingforevidenceofinteractionbetweentheofstarhd229196andtheinterstellarmedium AT stlouisn searchingforevidenceofinteractionbetweentheofstarhd229196andtheinterstellarmedium |
bdutipo_str |
Repositorios |
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