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

Taisiya G. Kopytova, Viki Joergens, Aurora Sicilia-Aguilar, Maria V. Rodríguez-Ledesma, Reinhard Mundt

Research output: Contribution to journalArticlepeer-review


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.


  • stars: activity
  • stars: pre-main sequence
  • stars: spots
  • stars: planetary systems: protoplanetary disks


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