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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: [email protected] 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: [email protected] 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: [email protected] 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: [email protected]
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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 

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