Large-scale photometric activity of UX Ori type stars

Details Large-scale photometric activity of UX Ori type stars Large-scale photometric activity of UX Ori type stars

Jan 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ap.....51....1g&link_type=abstract

Astrophysics, Volume 51, Issue 1, pp.1-6

Astronomy and Astrophysics

Astrophysics

1

Stars, Activity &Mdash, Individual, Ux Ori Type

Scientific paper

Radical readjustments in the photometric activity of young stars owing to sudden changes in the circumstellar extinction are discussed using the light curves of two UX Ori type stars, CQ Tau and V1184 Tau, as examples. Changes of this sort can be caused by large deviations from axial symmetry in the distribution of circumstellar dust, as well as by large variations in the mass accretion rate in circumstellar disks. A large amount of dust may also appear in the vicinity of a young star owing to collisions of planetesimals.

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