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

Chromospheric activity of stars with planets

Página do item simplificado Estatísticas

dc.contributor.author	Martins, Bruno Leonardo Canto
dc.contributor.author	Chagas, M. L. das
dc.contributor.author	Alves, S.
dc.contributor.author	Leão, Izan de Castro
dc.contributor.author	Souza Neto, L. P. de
dc.contributor.author	Medeiros, José Renan de
dc.date.accessioned	2020-05-18T18:44:14Z
dc.date.available	2020-05-18T18:44:14Z
dc.date.issued	2011
dc.description.resumo	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.	pt_BR
dc.identifier.citation	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..	pt_BR
dc.identifier.doi	https://doi.org/10.1051/0004-6361/201015314
dc.identifier.issn	0004-6361 (print), 1432-0746 (online)
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/28999
dc.language	en	pt_BR
dc.publisher	Astronomy & Astrophysics	pt_BR
dc.subject	Planet-star interactions	pt_BR
dc.subject	Stars: activity	pt_BR
dc.subject	Stars: chromospheres	pt_BR
dc.subject	Stars: coronae	pt_BR
dc.subject	Stars: statistics	pt_BR
dc.title	Chromospheric activity of stars with planets	pt_BR
dc.type	article	pt_BR