publication . Article . Preprint . 2011

Pulsations in M dwarf stars

Rodríguez-López, C.; MacDonald, J.; Moya, A.;
Open Access
  • Published: 04 Aug 2011 Journal: Monthly Notices of the Royal Astronomical Society: Letters, volume 419, pages L44-L48 (issn: 1745-3925, Copyright policy)
  • Publisher: Oxford University Press (OUP)
We present the results of the first theoretical non-radial non-adiabatic pulsational study of M dwarf stellar models with masses in the range 0.1 to 0.5M_solar. We find the fundamental radial mode to be unstable due to an \epsilon mechanism caused by deuterium (D-) burning for the young 0.1 and 0.2M_solar models, by non-equilibrium He^3 burning for the 0.2 and 0.25M_solar models of 10^4Myr, and by a flux blocking mechanism for the partially convective 0.4 and 0.5M_solar models once they reach the age of 500Myr. The periods of the overstable modes excited by the D-burning are in the range 4.2 to 5.2h for the 0.1M_solar models and is of order 8.4h for the 0.2M_sol...
arXiv: Astrophysics::Solar and Stellar Astrophysics
free text keywords: Physics, Stars, Astrophysics, Astrophysics - Solar and Stellar Astrophysics

Baran, A. S., Winiarski, M., Krzesin´ski, J., et al. 2011, Acta Astronomica, 61, 37

Becker, A. C., Bochanski, J. J., Hawley, S. L., et al. 2011, ApJ, 731, 17

Boury, A. & Noels, A. 1973, A&A, 24, 255 Chabrier, G., Gallardo, J., & Baraffe, I. 2007, A&A, 472, L17

Cody, A. M. 2009, in American Institute of Physics Conference Series, ed. J. A. Guzik & P. A. Bradley, Vol. 1170, 630-634

Davenport, J. R. A., Becker, A. C., Hawley, S. L., et al. 2011, astroph.1101.1363

Delfosse, X., Bonfils, X., Forveille, T., et al. 2006, in SF2A2006, ed. D. Barret et al., 395-398 Gabriel, M. 1964, Annales d'Astrophysique, 27, 141 Gabriel, M. 1967, Annales d'Astrophysique, 30, 745 Gabriel, M. & Grossman, A. S. 1977, A&A, 54, 283 Guzik, J. A., Kaye, A. B., Bradley, P. A., Cox, A. N., & Neuforge, C. 2000, ApJ Letters, 542, L57 Hartman, J. D., Bakos, G. A´ ., Noyes, R. W., et al. 2011, AJ, 141, 166 [OpenAIRE]

Jenkins, J. S., Ramsey, L. W., Jones, H. R. A., et al. 2009, ApJ, 704, 975

Kowalski, A. F., Hawley, S. L., Hilton, E. J., et al. 2009, AJ, 138, 633

L´opez-Morales, M. 2007, ApJ, 660, 732 MacDonald, J. & Mullan, D. J. 2010, ApJ, 723, 1599 Morales, J. C., Ribas, I., Jordi, C., et al. 2009, ApJ, 691, 1400

Moya, A., Baraffe, I., & Barrado, D. 2011, submitted Moya, A. & Garrido, R. 2008, Ap&SS, 316, 129 Moya, A., Garrido, R., & Dupret, M. A. 2004, A&A, 414, 1081

Mullan, D. J. & MacDonald, J. 2001, ApJ, 559, 353 Opoien, J. W. & Grossman, A. S. 1974, A&A, 37, 335 Palla, F. & Baraffe, I. 2005, A&A, 432, L57 Rodr´ıguez-L´opez, C., Moya, A., Garrido, R., et al. 2010, MNRAS, 402, 295

Tassoul, M. 1980, ApJ, 43, 469

Toma, E. 1972, A&A, 19, 76

Unno, W., Osaki, Y., Ando, H., Saio, H., & Shibahashi, H. 1989, Nonradial oscillations of stars Yee, J. C. & Jensen, E. L. N. 2010, ApJ, 711, 303

Powered by OpenAIRE Open Research Graph
Any information missing or wrong?Report an Issue
publication . Article . Preprint . 2011

Pulsations in M dwarf stars

Rodríguez-López, C.; MacDonald, J.; Moya, A.;