On the nature of rapidly rotating single evolved stars

We present an analysis of the nature of the rapidly rotating, apparently single giant based on rotational and radial velocity measurements carried out by the CORAVEL spectrometers. From the analyzed sample, composed of 2010 spectroscopic, apparently single, evolved stars of luminosity classes IV, II...

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Principais autores: Silva, R. Rodrigues da, Martins, B. L. Canto, Medeiros, José Renan de
Formato: article
Idioma:English
Publicado em: American Astronomical Society
Assuntos:
Stars: evolution
Stars: rotation
Endereço do item:https://repositorio.ufrn.br/jspui/handle/123456789/29085
http://dx.doi.org/10.1088/0004-637X/801/1/54
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spelling ri-123456789-290852022-10-20T20:37:31Z On the nature of rapidly rotating single evolved stars Silva, R. Rodrigues da Martins, B. L. Canto Medeiros, José Renan de Stars: evolution Stars: rotation We present an analysis of the nature of the rapidly rotating, apparently single giant based on rotational and radial velocity measurements carried out by the CORAVEL spectrometers. From the analyzed sample, composed of 2010 spectroscopic, apparently single, evolved stars of luminosity classes IV, III, II, and Ib with spectral types G and K, we classified 30 stars that presented unusual, moderate to rapid rotation. This work reports, for the first time, the presence of these abnormal rotators among subgiant, bright giant, and Ib supergiant stars. To date, this class of stars was reported only among giant stars of luminosity class III. Most of these abnormal rotators present an IRAS infrared excess, which, in principle, can be related to dust around these stars. 2020-05-28T12:36:30Z 2020-05-28T12:36:30Z 2015 article MEDEIROS, José Renan de et al. On the nature of rapidly rotating single evolved stars. Astrophysical Journal (Online), [s. l.], v. 801, p. 54, 2015. ISSN 1538-4357 versão online. DOI https://doi.org/10.1088/0004-637X/801/1/54. Disponível em: http://iopscience.iop.org/article/10.1088/0004-637X/801/1/54/meta. Acesso em: 28 maio 2020. 0004-637X (print), 1538-4357 (online) https://repositorio.ufrn.br/jspui/handle/123456789/29085 http://dx.doi.org/10.1088/0004-637X/801/1/54 en American Astronomical Society
institution Repositório Institucional
collection RI - UFRN
language English
topic Stars: evolution
Stars: rotation
spellingShingle Stars: evolution
Stars: rotation
Silva, R. Rodrigues da
Martins, B. L. Canto
Medeiros, José Renan de
On the nature of rapidly rotating single evolved stars
description We present an analysis of the nature of the rapidly rotating, apparently single giant based on rotational and radial velocity measurements carried out by the CORAVEL spectrometers. From the analyzed sample, composed of 2010 spectroscopic, apparently single, evolved stars of luminosity classes IV, III, II, and Ib with spectral types G and K, we classified 30 stars that presented unusual, moderate to rapid rotation. This work reports, for the first time, the presence of these abnormal rotators among subgiant, bright giant, and Ib supergiant stars. To date, this class of stars was reported only among giant stars of luminosity class III. Most of these abnormal rotators present an IRAS infrared excess, which, in principle, can be related to dust around these stars.
format article
author Silva, R. Rodrigues da
Martins, B. L. Canto
Medeiros, José Renan de
author_facet Silva, R. Rodrigues da
Martins, B. L. Canto
Medeiros, José Renan de
author_sort Silva, R. Rodrigues da
title On the nature of rapidly rotating single evolved stars
title_short On the nature of rapidly rotating single evolved stars
title_full On the nature of rapidly rotating single evolved stars
title_fullStr On the nature of rapidly rotating single evolved stars
title_full_unstemmed On the nature of rapidly rotating single evolved stars
title_sort on the nature of rapidly rotating single evolved stars
publisher American Astronomical Society
publishDate 2020
url https://repositorio.ufrn.br/jspui/handle/123456789/29085
http://dx.doi.org/10.1088/0004-637X/801/1/54
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AT martinsblcanto onthenatureofrapidlyrotatingsingleevolvedstars
AT medeirosjoserenande onthenatureofrapidlyrotatingsingleevolvedstars
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