K- and L- band spectroscopy of Be stars
We describe the behaviour of IR hydrogen emission lines of a sample of Be stars and discuss the physical properties of the circumstellar envelopes of Be stars classified in Groups I and II (Mennickent et al. 2009). We find that while Humphreys and Pfund lines of Group I stars form in an optically th...
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Autores principales: | , , , |
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Formato: | Articulo Comunicacion |
Lenguaje: | Inglés |
Publicado: |
2011
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Materias: | |
Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/84051 |
Aporte de: |
id |
I19-R120-10915-84051 |
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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 Ciencias Exactas Be stars Circumstellar matter Stars: emission-line |
spellingShingle |
Ciencias Astronómicas Ciencias Exactas Be stars Circumstellar matter Stars: emission-line Granada, Anahí Arias, María Laura Cidale, Lydia Sonia Mennickent, Ronald E. K- and L- band spectroscopy of Be stars |
topic_facet |
Ciencias Astronómicas Ciencias Exactas Be stars Circumstellar matter Stars: emission-line |
description |
We describe the behaviour of IR hydrogen emission lines of a sample of Be stars and discuss the physical properties of the circumstellar envelopes of Be stars classified in Groups I and II (Mennickent et al. 2009). We find that while Humphreys and Pfund lines of Group I stars form in an optically thick envelope/disk, Group II stars show Pfund lines that form in an optically thick medium and Humphreys lines originating in optically thinner regions. The transition between Groups I and II could be understood in terms of the evolution of the circumstellar disk of the star and might bring clues on the mechanism originating the Be phenomenon. |
format |
Articulo Comunicacion |
author |
Granada, Anahí Arias, María Laura Cidale, Lydia Sonia Mennickent, Ronald E. |
author_facet |
Granada, Anahí Arias, María Laura Cidale, Lydia Sonia Mennickent, Ronald E. |
author_sort |
Granada, Anahí |
title |
K- and L- band spectroscopy of Be stars |
title_short |
K- and L- band spectroscopy of Be stars |
title_full |
K- and L- band spectroscopy of Be stars |
title_fullStr |
K- and L- band spectroscopy of Be stars |
title_full_unstemmed |
K- and L- band spectroscopy of Be stars |
title_sort |
k- and l- band spectroscopy of be stars |
publishDate |
2011 |
url |
http://sedici.unlp.edu.ar/handle/10915/84051 |
work_keys_str_mv |
AT granadaanahi kandlbandspectroscopyofbestars AT ariasmarialaura kandlbandspectroscopyofbestars AT cidalelydiasonia kandlbandspectroscopyofbestars AT mennickentronalde kandlbandspectroscopyofbestars |
bdutipo_str |
Repositorios |
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1764820488327004165 |