Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Nascimento, J. D. Jr. do"'
Publikováno v:
2012, A&A Letter
We present rotation period measurements for subgiants observed by CoRoT. Interpreting the modulation of stellar light that is caused by star-spots on the time scale of the rotational period depends on knowing the fundamental stellar parameters. Const
Externí odkaz:
http://arxiv.org/abs/1210.7268
Publikováno v:
Astrophys.J.696:L48-L51,2009
In this letter we study the observed distributions of rotational velocity in a sample of more than 16,000 nearby F and G dwarf stars, magnitude complete and presenting high precision $Vsin i$ measurements. We show that the velocity distributions cann
Externí odkaz:
http://arxiv.org/abs/0903.0868
Publikováno v:
Europhys. Lett.84:59001, 2008
In this paper we will show that, the non-gaussian statistics framework based on the Kaniadakis statistics is more appropriate to fit the observed distributions of projected rotational velocity measurements of stars in the Pleiades open cluster. To th
Externí odkaz:
http://arxiv.org/abs/0903.0836
Autor:
De Medeiros, J. R., Silva, J. R. P., Nascimento, J. D. Jr. do, Martins, B. L. Canto, da Silva, L., Melo, C., Burnet, M.
The present paper describes the first results of an observational program intended to refine and extend the existing vsini measurements of metal-poor stars, with anemphasis on field evolved stars. The survey was carried out with the FEROS and CORALIE
Externí odkaz:
http://arxiv.org/abs/astro-ph/0608248
Precise Li abundances are determined for 54 giant stars mostly evolving across the Hertzsprung gap. We combine these data with rotational velocity and with information related to the deepening of the convective zone of the stars to analyse their link
Externí odkaz:
http://arxiv.org/abs/astro-ph/0307197
Autor:
Nascimento, J. D Jr. do, Martins, B. L. Canto, Melo, C. H. F., de Mello, G. Porto, De Medeiros, J. R.
Publikováno v:
Astron.Astrophys.405:723-732,2003
The connection rotation-CaII emission flux-lithium abundance is analyzed for a sample of bona fide subgiant stars, with evolutionary status determined from HIPPARCOS trigonometric parallax measurements and from the Toulouse-Geneva code.
Comment:
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Externí odkaz:
http://arxiv.org/abs/astro-ph/0307196