Zobrazeno 1 - 7
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pro vyhledávání: '"N R Landin"'
We investigate stellar magnetic activity from the theoretical point of view, by using stellar evolution models to calculate theoretical convective turnover times ($\tau_{\rm c}$) and Rossby numbers (${\rm Ro}$) for pre-main-sequence and main-sequence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ae20c83be6ec4d315163ea6bdb2055c
http://arxiv.org/abs/2212.13958
http://arxiv.org/abs/2212.13958
Theoretical estimates of the convective turnover time for low-mass, rotating pre-main sequence stars
Publikováno v:
Proceedings of the International Astronomical Union. 2:446-448
The Rossby number Ro is an important quantity related to the well-known magnetic activity-rotation correlation for main sequence, solar-type stars. For such stars, Ro can be obtained by a semi-empirical relationship between the convective turnover ti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7756b990b6e5ed489cf09add9b803196
https://doi.org/10.1017/s1743921307000889
https://doi.org/10.1017/s1743921307000889
Publikováno v:
Astronomy & Astrophysics. 586:A96
Rotational evolution in young stars is described by pMS evolutionary tracks including rotation, conservation of angular momentum (AM), and simulations of disk-locking (DL). By assuming that DL is the regulation mechanism for the stellar angular veloc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83fae471d5a245b5aa177eb5cd5b59a9
https://doi.org/10.1051/0004-6361/201525851
https://doi.org/10.1051/0004-6361/201525851
Magnetic fields are at the heart of the observed stellar activity in late-type stars, and they are presumably generated by a dynamo mechanism at the interface layer between the radiative and the convective stellar regions. Since dynamo models are bas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba0535586139a0333834f6f7747eed71
http://arxiv.org/abs/1001.2754
http://arxiv.org/abs/1001.2754
Autor:
N. R. Landin, Pierre Bergeron, D. Barrado y Navascues, Germano R. Quast, Hervé Bouy, Carlos A. O. Torres, Nuria Huélamo, Luiz Paulo R. Vaz, Michael Sterzik, G. Chauvin, Claudio Melo
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2009, 503, pp.873. ⟨10.1051/0004-6361/200811514⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2009, 503, pp.873. ⟨10.1051/0004-6361/200811514⟩
HIP96515A is a double-lined spectroscopic binary with a visual companion (HIP96515B) at 8.6 arcsec. It is included in the SACY catalog as a potential young star and classified as an eclipsing binary in the ASAS Catalog. We have analyzed spectroscopic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99108c322d6a5bd1fb1d24da0b4d2b06
https://hal.archives-ouvertes.fr/hal-00479927
https://hal.archives-ouvertes.fr/hal-00479927
Autor:
C. Sterken, C. Papadaki, N. R. Landin, M. David, L. M. Freyhammer, M. Y. Bouzid, C. Nitschelm, J. V. Clausen, J. Pritchard, E. H. Olsen, Herman Hensberge, Luiz Paulo R. Vaz
Publikováno v:
Monthly notices of the Royal Astronomical Society
We derive the orbital period and monitor in detail the eclipses of two deep-southern double-lined eclipsing binaries of considerable interest. We present new uvby photometry over more than 100 nights for V883 Cen, scan for the first time the eclipses
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7828739350aba739283561750eb1978b
https://hdl.handle.net/10067/657100151162165141
https://hdl.handle.net/10067/657100151162165141
Rotational evolution in the pre-main sequence (PMS) is described with new sets of PMS evolutionary tracks including rotation, non-gray boundary conditions (BCs) and either low (LCE) or high convection efficiency (HCE). Using observational data and ou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5521e46b3086b2cb8b3eda3a0536fc9d