Chromospheric activity of stars with planets

Context. Signatures of chromospheric activity enhancement have been found for a dozen stars, pointing to a possible star-planet interaction. Nevertheless in the coronal activity regime, there is no conclusive observational evidence of such an interaction. Does star-planet interaction manifest itself...

ver descrição completa

Na minha lista:
Detalhes bibliográficos
Principais autores: Martins, Bruno Leonardo Canto, Chagas, M. L. das, Alves, S., Leão, Izan de Castro, Souza Neto, L. P. de, Medeiros, José Renan de
Formato: article
Idioma:English
Publicado em: Astronomy & Astrophysics
Assuntos:
Planet-star interactions
Stars: activity
Stars: chromospheres
Stars: coronae
Stars: statistics
Endereço do item:https://repositorio.ufrn.br/jspui/handle/123456789/28999
https://doi.org/10.1051/0004-6361/201015314
Tags: Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
id ri-123456789-28999
record_format dspace
spelling ri-123456789-289992020-06-03T17:40:25Z Chromospheric activity of stars with planets Martins, Bruno Leonardo Canto Chagas, M. L. das Alves, S. Leão, Izan de Castro Souza Neto, L. P. de Medeiros, José Renan de Planet-star interactions Stars: activity Stars: chromospheres Stars: coronae Stars: statistics Context. Signatures of chromospheric activity enhancement have been found for a dozen stars, pointing to a possible star-planet interaction. Nevertheless in the coronal activity regime, there is no conclusive observational evidence of such an interaction. Does star-planet interaction manifest itself only for a few particular cases, without having a major effect on stars with planets in general? Aims. We aim to add additional observational constraints to support or reject the major effects of star-planet interactions in stellar activity, based on Ca II chromospheric emission flux. Methods. We performed a statistical analysis of Ca II emission flux of stars with planets, as well as a comparison between Ca II and X-ray emission fluxes, searching for dependencies on planetary parameters. Results. In the present sample of stars with planets, there are no significant correlations between chromospheric activity indicator log(RHK) and planetary parameters. Furthermore, the distribution of the chromospheric activity indicator for stars without planets is indistinguishable from the one with planets. 2020-05-18T18:44:14Z 2020-05-18T18:44:14Z 2011 article MEDEIROS, José Renan de et al. Chromospheric activity of stars with planets. Astronomy & Astrophysics (Berlin. Print), p. 73-78, 2011. ISSN 1432-0746 versão online. DOI https://doi.org/10.1051/0004-6361/201015314. Disponível em: https://www.aanda.org/articles/aa/abs/2011/06/aa15314-10/aa15314-10.html. Acesso em: 18 maio 2020. Reproduzido com permissão da Astronomy & Astrophysics, © ESO.. 0004-6361 (print), 1432-0746 (online) https://repositorio.ufrn.br/jspui/handle/123456789/28999 https://doi.org/10.1051/0004-6361/201015314 en application/pdf Astronomy & Astrophysics
institution Repositório Institucional
collection RI - UFRN
language English
topic Planet-star interactions
Stars: activity
Stars: chromospheres
Stars: coronae
Stars: statistics
spellingShingle Planet-star interactions
Stars: activity
Stars: chromospheres
Stars: coronae
Stars: statistics
Martins, Bruno Leonardo Canto
Chagas, M. L. das
Alves, S.
Leão, Izan de Castro
Souza Neto, L. P. de
Medeiros, José Renan de
Chromospheric activity of stars with planets
description Context. Signatures of chromospheric activity enhancement have been found for a dozen stars, pointing to a possible star-planet interaction. Nevertheless in the coronal activity regime, there is no conclusive observational evidence of such an interaction. Does star-planet interaction manifest itself only for a few particular cases, without having a major effect on stars with planets in general? Aims. We aim to add additional observational constraints to support or reject the major effects of star-planet interactions in stellar activity, based on Ca II chromospheric emission flux. Methods. We performed a statistical analysis of Ca II emission flux of stars with planets, as well as a comparison between Ca II and X-ray emission fluxes, searching for dependencies on planetary parameters. Results. In the present sample of stars with planets, there are no significant correlations between chromospheric activity indicator log(RHK) and planetary parameters. Furthermore, the distribution of the chromospheric activity indicator for stars without planets is indistinguishable from the one with planets.
format article
author Martins, Bruno Leonardo Canto
Chagas, M. L. das
Alves, S.
Leão, Izan de Castro
Souza Neto, L. P. de
Medeiros, José Renan de
author_facet Martins, Bruno Leonardo Canto
Chagas, M. L. das
Alves, S.
Leão, Izan de Castro
Souza Neto, L. P. de
Medeiros, José Renan de
author_sort Martins, Bruno Leonardo Canto
title Chromospheric activity of stars with planets
title_short Chromospheric activity of stars with planets
title_full Chromospheric activity of stars with planets
title_fullStr Chromospheric activity of stars with planets
title_full_unstemmed Chromospheric activity of stars with planets
title_sort chromospheric activity of stars with planets
publisher Astronomy & Astrophysics
publishDate 2020
url https://repositorio.ufrn.br/jspui/handle/123456789/28999
https://doi.org/10.1051/0004-6361/201015314
work_keys_str_mv AT martinsbrunoleonardocanto chromosphericactivityofstarswithplanets
AT chagasmldas chromosphericactivityofstarswithplanets
AT alvess chromosphericactivityofstarswithplanets
AT leaoizandecastro chromosphericactivityofstarswithplanets
AT souzanetolpde chromosphericactivityofstarswithplanets
AT medeirosjoserenande chromosphericactivityofstarswithplanets
_version_ 1773963636249722880

Registros relacionados