Dataciencia

Colección SciELO Chile

The close circumstellar environment of Betelgeuse IV. VLTI/PIONIER interferometric monitoring of the photosphere

Indexado

WoS	WOS:000373207800142
Scopus	SCOPUS_ID:84961126651

DOI

10.1051/0004-6361/201527028

Año

2016

Tipo

artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras

Abstract

Conclusions. We bring new evidence for the presence of a convective pattern in the photosphere of red supergiants. The inferred hot spot is probably the top of a giant convection cell although an asymmetric extension of the star cannot be excluded by these interferometric observations alone. The properties of the observed surface features show a stronger contrast and inhomogeneity as predicted by 3D radiative hydrodynamical simulations. We propose that the large observed feature is modifying the signature of the convective pattern at the surface of the star in a way that simulations cannot reproduce.

Revista

Revista	ISSN
Astronomy & Astrophysics	0004-6361

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Disciplinas de Investigación

WOS
Astronomy & Astrophysics

Scopus
Sin Disciplinas

SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional

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Autores - Afiliación

Ord.	Autor	Género	Institución - País
1	Montarges, M.	Hombre	Inst Radioastron Millimetr - Francia Univ Paris Diderot - Francia IRAM Institut de RadioAstronomie Millimétrique - Francia L'Observatoire de Paris - Francia
2	Kervella, P.	Hombre	Univ Paris Diderot - Francia CNRS - Francia Universidad de Chile - Chile L'Observatoire de Paris - Francia Institut National des Sciences de l'Univers - Francia INSU - Institut National des Sciences de l'Univers - Francia
3	Perrin, G.	-	Univ Paris Diderot - Francia
4	Chiavassa, Andrea	Mujer	Univ Cote Azur - Francia Observatoire de la Côte d'Azur - Francia
5	MORALES-PERALTA, JUAN CARLOS	Hombre	UJF Grenoble 1 - Francia Verimag - Francia Institut de Planétologie et d’Astrophysique de Grenoble (IPAG) - Francia
6	Auriere, M.	-	Univ Toulouse - Francia CNRS - Francia Université de Toulouse - Francia Institut de Recherche en Astrophysique et Planétologie (IRAP) - Francia Observatoire Midi-Pyrénées - Francia
7	Ariste, A. Lopez	-	Univ Toulouse - Francia CNRS - Francia
7	López-Ariste, A.	-	Université de Toulouse - Francia Institut de Recherche en Astrophysique et Planétologie (IRAP) - Francia Univ Toulouse - Francia CNRS - Francia Université Toulouse III - Paul Sabatier - Francia
8	Mathias, P.	Hombre	Univ Toulouse - Francia CNRS - Francia Université de Toulouse - Francia Institut de Recherche en Astrophysique et Planétologie (IRAP) - Francia Observatoire Midi-Pyrénées - Francia
9	Ridgway, Stephen T.	Hombre	Natl Opt Astron Observ - Estados Unidos National Optical Astronomy Observatory - Estados Unidos
10	Lacour, S.	Hombre	Univ Paris Diderot - Francia L'Observatoire de Paris - Francia
11	Haubois, Xavier	Hombre	ESO - Chile European Southern Observatory Santiago - Chile Observatorio Europeo Austral - Chile
12	Berger, Jean-Philippe	Hombre	ESO - Chile European Southern Observatory Santiago - Chile Observatorio Europeo Austral - Chile

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Origen de Citas Identificadas

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Citas identificadas: Las citas provienen de documentos incluidos en la base de datos de DATACIENCIA

Citas Identificadas: 32.26 %
Citas No-identificadas: 67.74000000000001 %

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Citas identificadas: Las citas provienen de documentos incluidos en la base de datos de DATACIENCIA

Citas Identificadas: 32.26 %
Citas No-identificadas: 67.74000000000001 %

Financiamiento

Fuente
CNRS
NASA
National Aeronautics and Space Administration
Space Telescope Science Institute
Centre National de la Recherche Scientifique
CNRS/INSU
NASA from the Space Telescope Science Institute
INSU
Programme National de Physique Stellaire
Programme National de Physique Stellaire (PNPS) of CNRS/INSU, France
Observatoire de Paris
University Denis Diderot Paris 7
ONERA
PHASE

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Agradecimientos

Agradecimiento
We are grateful to ESO's Director-General, Prof. Tim de Zeeuw, for the allocation of observing time to our program, as well as to the Paranal Observatory team for the successful execution of the observations. This research received the support of PHASE, the high-angular resolution partnership between ONERA, Observatoire de Paris, CNRS, and University Denis Diderot Paris 7. We acknowledge financial support from the Programme National de Physique Stellaire (PNRS) of CNRS/INSU, France. Support for this work was provided by NASA through grant number HST-GO-12610.001-A from the Space Telescope Science Institute, which is operated by AURA, Inc., under NASA contract NAS 5-26555. We used the SIMBAD and VIZIER databases as well the Aladin sky atlas at the CDS, Strasbourg (France) 2, and NASA's Astrophysics Data System Bibliographic Services. This research has made use of Jean-Marie Mariotti Center's Aspro<SUP>3</SUP> service, of the LITpro<SUP>4</SUP> software (co-developped by CRAL, LAOG and FIZEAU) and of the Search Cal service<SUP>5</SUP> (co-developed by FIZEAU and LAOG/IPAG). This research made use of IPython (Perez & Granger 2007) and Astropy<SUP>6</SUP>, a community-developed core Python package for Astronomy (Astropy Collaboration et al. 2013). We acknowledge with thanks the variable star observations from the AAVSO International Database that was contributed by observers worldwide and used in this research. We would like to thank the anonymous referee whose suggestions and comments led to improvements in this article.
This research received the support of PHASE, the high-angular resolution partnership between ONERA, Observatoire de Paris, CNRS, and University Denis Diderot Paris 7. We acknowledge financial support from the Programme National de Physique Stellaire (PNPS) of CNRS/INSU, France. Support for this work was provided by NASA through grant number HST-GO-12610.001-A from the Space Telescope Science Institute, which is operated by AURA, Inc., under NASA contract NAS 5-26555.

Agradecimiento

We are grateful to ESO's Director-General, Prof. Tim de Zeeuw, for the allocation of observing time to our program, as well as to the Paranal Observatory team for the successful execution of the observations. This research received the support of PHASE, the high-angular resolution partnership between ONERA, Observatoire de Paris, CNRS, and University Denis Diderot Paris 7. We acknowledge financial support from the Programme National de Physique Stellaire (PNRS) of CNRS/INSU, France. Support for this work was provided by NASA through grant number HST-GO-12610.001-A from the Space Telescope Science Institute, which is operated by AURA, Inc., under NASA contract NAS 5-26555. We used the SIMBAD and VIZIER databases as well the Aladin sky atlas at the CDS, Strasbourg (France) 2, and NASA's Astrophysics Data System Bibliographic Services. This research has made use of Jean-Marie Mariotti Center's Aspro3 service, of the LITpro4 software (co-developped by CRAL, LAOG and FIZEAU) and of the Search Cal service5 (co-developed by FIZEAU and LAOG/IPAG). This research made use of IPython (Perez & Granger 2007) and Astropy6, a community-developed core Python package for Astronomy (Astropy Collaboration et al. 2013). We acknowledge with thanks the variable star observations from the AAVSO International Database that was contributed by observers worldwide and used in this research. We would like to thank the anonymous referee whose suggestions and comments led to improvements in this article.

This research received the support of PHASE, the high-angular resolution partnership between ONERA, Observatoire de Paris, CNRS, and University Denis Diderot Paris 7. We acknowledge financial support from the Programme National de Physique Stellaire (PNPS) of CNRS/INSU, France. Support for this work was provided by NASA through grant number HST-GO-12610.001-A from the Space Telescope Science Institute, which is operated by AURA, Inc., under NASA contract NAS 5-26555.