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Stellar activity, differential rotation, and exoplanets

Published online by Cambridge University Press:  26 August 2011

A. F. Lanza
A. F. Lanza*
Affiliation:
INAF-Osservatorio Astrofisico di Catania, Via S. Sofia, 78, 95123 Catania, Italy email: nuccio.lanza@oact.inaf.it
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Abstract

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The photospheric spot activity of some of the stars with transiting planets discovered by the CoRoT space experiment is reviewed. Their out-of-transit light modulations are fitted by a spot model previously tested with the total solar irradiance variations. This approach allows us to study the longitude distribution of the spotted area and its variations versus time during the five months of a typical CoRoT time series. The migration of the spots in longitude provides a lower limit for the surface differential rotation, while the variation of the total spotted area can be used to search for short-term cycles akin the solar Rieger cycles. The possible impact of a close-in giant planet on stellar activity is also discussed.

Keywords

Stars: activitystars: magnetic fieldsstars: spotsstars: rotationplanetary systems
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S273: The Physics of Sun and Star Spots , August 2010 , pp. 89 - 95
Copyright
Copyright © International Astronomical Union 2011

References

Aigrain, S., et al. 2008, Astron. Astrophys, 488, L43CrossRefGoogle Scholar
Alonso, R., et al. 2008, Astron. Astrophys, 482, L21CrossRefGoogle Scholar
Auvergne, M., et al. 2009, Astron. Astrophys, 506, 411CrossRefGoogle Scholar
Berdyugina, S. V. 2005, Living Reviews in Solar Physics, 2, 8CrossRefGoogle Scholar
Berdyugina, S. V. & Tuominen, I. 1998, Astron. Astrophys, 336, L25Google Scholar
Bouchy, F., et al. 2008, Astron. Astrophys, 482, L25CrossRefGoogle Scholar
Brown, A., Korhonen, H., Berdyugina, S, et al. , 2011, these proceedingsGoogle Scholar
Brandenburg, A. 2005, Astrophys. J., 625, 539CrossRefGoogle Scholar
Ciardi, D. R., van Braun, K., Bryden, G., et al. 2011, Astronomical J., 141, 108CrossRefGoogle Scholar
Collier Cameron, A. 1997, MNRAS, 287, 556CrossRefGoogle Scholar
Croll, B., et al. 2006, Astron. Astrophys, 648, 607Google Scholar
Cuntz, M., Saar, S. H., & Musielak, Z. E. 2000, Astrophys. J., 533, L151CrossRefGoogle Scholar
Dupree, A. 2011, these proceedingsGoogle Scholar
Fróhlich, H.-E., Küker, M., Hatzes, A. P., & Strassmeier, K. G. 2009, Astron. Astrophys, 506, 263CrossRefGoogle Scholar
Fróhlich, C. & Lean, J. 2004, A&AR, 12, 273Google Scholar
Haas, M. R., et al. 2010, Astrophys. J., 713, L115CrossRefGoogle Scholar
Huber, K. F., Czesla, S., Wolter, U., & Schmitt, J. H. M. M. 2010, Astron. Astrophys, 514, A39CrossRefGoogle Scholar
Kashyap, V. L., Drake, J. J., & Saar, S. H. 2008, Astrophys. J., 687, 1339CrossRefGoogle Scholar
Kolláth, Z. & Oláh, K. 2009, Astron. Astrophys, 501, 695CrossRefGoogle Scholar
Krivova, N. A. & Solanki, S. K. 2002, Astron. Astrophys, 394, 701CrossRefGoogle Scholar
Lanza, A. F. 2008, Astron. Astrophys, 487, 1163CrossRefGoogle Scholar
Lanza, A. F. 2009, Astron. Astrophys, 505, 339CrossRefGoogle Scholar
Lanza, A. F., Catalano, S., Cutispoto, G., Pagano, I., & Rodono, M. 1998, Astron. Astrophys, 332, 541Google Scholar
Lanza, A. F., Bonomo, A. S., & Rodonò, M. 2007, Astron. Astrophys, 464, 741CrossRefGoogle Scholar
Lanza, A. F., et al. 2009a, Astron. Astrophys, 493, 193CrossRefGoogle Scholar
Lanza, A. F., et al. 2009b, Astron. Astrophys, 506, 255CrossRefGoogle Scholar
Lanza, A. F., et al. 2010, Astron. Astrophys, 520, A53CrossRefGoogle Scholar
Lanza, A. F., et al. 2011, Astron. Astrophys, 525, A14CrossRefGoogle Scholar
Lou, Y.-Q. 2000, Astrophys. J., 540, 1102CrossRefGoogle Scholar
Messina, S. & Guinan, E. F. 2003, Astron. Astrophys, 409, 1017CrossRefGoogle Scholar
Mosser, B., Baudin, F., Lanza, A. F., et al. 2009, Astron. Astrophys, 506, 245CrossRefGoogle Scholar
Oláh, K. 2011, these proceedingsGoogle Scholar
Oliver, R., Ballester, J. L., & Baudin, F. 1998, Nature, 394, 552CrossRefGoogle Scholar
Pagano, I., Lanza, A. F., Leto, G., et al. 2009, Earth, Moon, and Planets, 105, 373CrossRefGoogle Scholar
Pillitteri, I., Wolk, S. J., Cohen, O. et al. 2010, Astrophys. J., 722, 1216CrossRefGoogle Scholar
Poppenhaeger, K., Robrade, J., & Schmitt, J. H. M. M. 2010, Astron. Astrophys, 515, A98CrossRefGoogle Scholar
Reiners, A. 2006, Astron. Astrophys, 446, 267CrossRefGoogle Scholar
Saar, S. H., Cuntz, M., Kashyap, V. L., & Hall, J. C. 2008, IAU Symposium, 249, 79CrossRefGoogle Scholar
Santos, N. C., et al. 2003, Astron. Astrophys, 406, 373CrossRefGoogle Scholar
Savanov, I. S. 2010, Astron. Rep., 54, 437CrossRefGoogle Scholar
Schüssler, M. & Rempel, M. 2005, Astron. Astrophys, 441, 337CrossRefGoogle Scholar
Shkolnik, E., et al. 2005, Astrophys. J., 622, 1075CrossRefGoogle Scholar
Shkolnik, E., Bohlender, D. A., Walker, G. A. H., & Collier Cameron, A. 2008, Astrophys. J., 676, 628CrossRefGoogle Scholar
Silva-Valio, A. 2011, these proceedingsGoogle Scholar
Silva-Valio, A., Lanza, A. F., Alonso, R., & Barge, P. 2010, Astron. Astrophys, 510, A25CrossRefGoogle Scholar
Strassmeier, K. G., 2009, A&AR, 17, 251Google Scholar
Strassmeier, K. G., 2011, these proceedingsGoogle Scholar
Walker, G., et al. 2003, PASP, 115, 1023CrossRefGoogle Scholar
Walker, G. A. H., et al. 2007, Astrophys. J., 659, 1611CrossRefGoogle Scholar
Walker, G. A. H., et al. 2008, Astron. Astrophys, 482, 691CrossRefGoogle Scholar
Winn, J. N., et al. 2005, Astrophys. J., 631, 1215CrossRefGoogle Scholar
Wolter, U., Schmitt, J. H. M. M., Huber, K. F., et al. 2009, Astron. Astrophys, 504, 561CrossRefGoogle Scholar
Zappalà, R. A. & Zuccarello, F. 1991, Astron. Astrophys, 242, 480Google Scholar
Zaqarashvili, T. V., Carbonell, M., Oliver, R., & Ballester, J. L. 2010, Astrophys. J., 709, 749CrossRefGoogle Scholar