Research output: Contribution to journal › Article › peer-review
On the nature of cyclic light variations in UX Ori stars. / Grinin, V. P.; Rostopchina, A. N.; Shakhovskoi, D. N.
In: Astronomy Letters, Vol. 24, No. 6, 01.11.1998, p. 802-807.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - On the nature of cyclic light variations in UX Ori stars
AU - Grinin, V. P.
AU - Rostopchina, A. N.
AU - Shakhovskoi, D. N.
PY - 1998/11/1
Y1 - 1998/11/1
N2 - Based on long-term series of photoelectric observations of the UX Ori stars BF Ori, RR Tau, and CO Ori, we obtained evidence for the cyclicity of their photometric activity on a time scale from several years to ten years or more. Since the photometric variability of this type of star is attributable to variable circumstellar extinction and is determined by the instantaneous dust column density, the presence of activity cycles points to the existence in circumstellar dust disks of large-scale nonuniformities in the dust distribution which periodically appear on the line of sight. The components of a binary (or multiple) system or protoplanets can be the source of such nonuniformities.
AB - Based on long-term series of photoelectric observations of the UX Ori stars BF Ori, RR Tau, and CO Ori, we obtained evidence for the cyclicity of their photometric activity on a time scale from several years to ten years or more. Since the photometric variability of this type of star is attributable to variable circumstellar extinction and is determined by the instantaneous dust column density, the presence of activity cycles points to the existence in circumstellar dust disks of large-scale nonuniformities in the dust distribution which periodically appear on the line of sight. The components of a binary (or multiple) system or protoplanets can be the source of such nonuniformities.
UR - http://www.scopus.com/inward/record.url?scp=0032280188&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0032280188
VL - 24
SP - 802
EP - 807
JO - Astronomy Letters
JF - Astronomy Letters
SN - 1063-7737
IS - 6
ER -
ID: 126126298