Searching for evidence of interaction between the of star HD 229196 and the interstellar medium

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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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Autores principales: Pineault, S., Arnal, E.M., Cappa, C., Cichowolski, S., Normandeau, M., St-Louis, N.
Formato: JOUR
Materias:
ISM: bubbles
ISM: structure
Stars: individual: HD 229196
Stars: mass-loss
Stars: winds, outflows
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00358711_v386_n3_p1739_Pineault
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00358711_v386_n3_p1739_Pineault
record_format dspace
spelling todo:paper_00358711_v386_n3_p1739_Pineault2023-10-03T14:46:50Z Searching for evidence of interaction between the of star HD 229196 and the interstellar medium Pineault, S. Arnal, E.M. Cappa, C. Cichowolski, S. Normandeau, M. St-Louis, N. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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
Pineault, S.
Arnal, E.M.
Cappa, C.
Cichowolski, S.
Normandeau, M.
St-Louis, N.
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.
format JOUR
author Pineault, S.
Arnal, E.M.
Cappa, C.
Cichowolski, S.
Normandeau, M.
St-Louis, N.
author_facet Pineault, S.
Arnal, E.M.
Cappa, C.
Cichowolski, S.
Normandeau, M.
St-Louis, N.
author_sort Pineault, S.
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
url http://hdl.handle.net/20.500.12110/paper_00358711_v386_n3_p1739_Pineault
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AT cichowolskis searchingforevidenceofinteractionbetweentheofstarhd229196andtheinterstellarmedium
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