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Variability of CHXR 20: accretion, extinction, spots or a companion?

Published online by Cambridge University Press:  06 January 2014

Taisiya G. Kopytova ,
Viki Joergens ,
Aurora Sicilia-Aguilar ,
Maria V. Rodríguez-Ledesma  and
Reinhard Mundt
Taisiya G. Kopytova
Affiliation:
Max-Planck Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany email: kopytova@mpia.de International Max-Planck Research School for Astronomy and Cosmic Physics at the University of Heidelberg, IMPRS-HD, Germany
Viki Joergens
Affiliation:
Max-Planck Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany email: kopytova@mpia.de Zentrum für Astronomie, Institut für Theoretische Astrophysik, Albert-Ueberle-Str. 2, 69120 Heidelberg, Germany
Aurora Sicilia-Aguilar
Affiliation:
Departamento de Física Teórica, Facultad de Ciencias, Universidad Autónoma de Madrid Cantoblanco, 28049 Madrid, Spain
Maria V. Rodríguez-Ledesma
Affiliation:
Max-Planck Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany email: kopytova@mpia.de Institut für Astrophysik, Georg-August-Universität, Friedrich-Hund-Platz, 37077 Göttingen, Germany
Reinhard Mundt
Affiliation:
Max-Planck Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany email: kopytova@mpia.de
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Abstract

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We study the photometric variability of a pre-main sequence star (K6, 0.9M⊙) CHXR 20. We test several scenarios for the variability including variable accretion, variable extinction, cool and hot spots on the stellar surface and the presence of a potential companion.

Keywords

stars: activitystars: pre-main sequencestars: spotsstars: planetary systems: protoplanetary disks
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S299: Exploring the Formation and Evolution of Planetary Systems , June 2013 , pp. 216 - 217
Copyright
Copyright © International Astronomical Union 2013 

References

Cardelli, J. A., Clayton, G. C., & Mathis, J. S. 1989, ApJ, 345, 245CrossRefGoogle Scholar
Carpenter, J. M., Hillenbrand, L. A., & Skrutskie, M. F. 2001, AJ, 121, 3160CrossRefGoogle Scholar
Cutri, R. M., Skrutskie, M. F., van Dyk, S., Beichman, C. A., et al. 2000, VizieR Online Data CatalogGoogle Scholar
Dullemond, C. P. & Dominik, C. 2004, A&A, 417, 159Google Scholar
Lawson, W. A. & Crause, L. A. 2009, PASA, 26, 31Google Scholar
Luhman, K. L. 2004, ApJ, 602, 816CrossRefGoogle Scholar
Luhman, K. L. 2007, ApJS, 173, 104Google Scholar
Luhman, K. L., Allen, L. E., Allen, P. R., Gutermuth, R. A., Hartmann, L., Mamajek, E. E., Megeath, S. T., Myers, P. C., & Fazio, G. G. 2008, ApJ, 675, 1375Google Scholar
Siess, L., Dufour, E., & Forestini, M. 2000, A&A, 358, 593Google Scholar
Wright, E. L., Eisenhardt, P. R. M., Mainzer, et al. 2010, AJ, 140, 1868CrossRefGoogle Scholar