Radial Velocity Fluctuations of RZ Psc

被引：0
|
作者：
I. S. Potravnov
N. A. Gorynya
V. P. Grinin
N. Kh. Minikulov
机构：
[1] Russian Academy of Sciences,Main (Pulkovo) Astronomical Observatory
[2] Russian Academy of Sciences,Institute of Astronomy
[3] M. V. Lomonosov Moscow State University,Institute of Astrophysics
[4] P. K. Shternberg State Institute of Astronomy,undefined
[5] Academy of Sciences of the Republic of Tajikistan,undefined
来源：
Astrophysics | 2014年 / 57卷
关键词：
stars; radial velocity fluctuations of RZ Psc;
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摘要：
The behavior of the radial velocity of the UX Ori type star RZ Psc is studied. The existence of an inner cavity with a radius of about 0.7 a.u. in the circumstellar disk of this star allows to suggest the presence of a companion. A study of the radial velocity of RZ Psc based on our own measurements and published data yields no periodic component in its variability. The two most accurate measurements of Vr, based on high resolution spectra obtained over a period of three months, show that the radial velocity is constant over this time interval to within 0.5 km/s. This imposes a limit of Mp ≤10 MJup on the mass of the hypothetical companion. Possible reasons for the observed strong fluctuations in the radial velocity of this star are discussed.
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页码：491 / 499
页数：8
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