The interstellar medium local to HD 10125

Based on an H I line and 408- and 1420-MHz radio continuum survey carried out at the Dominion Radio Astrophysical Observatory (DRAO), the environment of the O star HD 10125 has been studied. In addition, complementary radio continuum images, as well as infrared data of the same region have been anal...

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Detalles Bibliográficos
Autores principales: Cichowolski, Silvina, Arnal, Edmundo Marcelo, Cappa, Cristina Elisabet, Pineault, Serge, St-Louis, N.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2003
Materias:
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83491
Aporte de:
id I19-R120-10915-83491
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
H II regions
Infrared: ISM
ISM: bubbles
Stars: individual: HD 10125
spellingShingle Ciencias Astronómicas
H II regions
Infrared: ISM
ISM: bubbles
Stars: individual: HD 10125
Cichowolski, Silvina
Arnal, Edmundo Marcelo
Cappa, Cristina Elisabet
Pineault, Serge
St-Louis, N.
The interstellar medium local to HD 10125
topic_facet Ciencias Astronómicas
H II regions
Infrared: ISM
ISM: bubbles
Stars: individual: HD 10125
description Based on an H I line and 408- and 1420-MHz radio continuum survey carried out at the Dominion Radio Astrophysical Observatory (DRAO), the environment of the O star HD 10125 has been studied. In addition, complementary radio continuum images, as well as infrared data of the same region have been analysed. An arc-like structure is found in all the radio continuum data. From the 21 -cm line data, an H I minimum is found in the velocity range ‒27 to ‒32kms<SUP>-1</SUP>. Although HD 10125 is not at the centre of the H I cavity, its eccentric position is consistent with the observed stellar proper motion. The H I cavity and the continuum arc-like structure show an excellent morphological correlation. The radio continuum emission has a spectral index (S<SUB>v</SUB> ∼ v<SUP>α</SUP>) α = 0.0 ± 0.1, which establishes the thermal nature of the arc-like feature. The dust temperature obtained from the infrared data is higher in the area where the continuum emission is present. A distance of 3 kpc is derived for the star, the H I cavity and the radio continuum structure. We conclude that all the features we have found are physically related to each other. The O star has enough energetic photons to both ionize the surrounding gas and heat up the dust and, through its powerful wind, also sweep up the H I and H II gas.
format Articulo
Articulo
author Cichowolski, Silvina
Arnal, Edmundo Marcelo
Cappa, Cristina Elisabet
Pineault, Serge
St-Louis, N.
author_facet Cichowolski, Silvina
Arnal, Edmundo Marcelo
Cappa, Cristina Elisabet
Pineault, Serge
St-Louis, N.
author_sort Cichowolski, Silvina
title The interstellar medium local to HD 10125
title_short The interstellar medium local to HD 10125
title_full The interstellar medium local to HD 10125
title_fullStr The interstellar medium local to HD 10125
title_full_unstemmed The interstellar medium local to HD 10125
title_sort interstellar medium local to hd 10125
publishDate 2003
url http://sedici.unlp.edu.ar/handle/10915/83491
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