Radial Velocity Fluctuations of RZ Psc
| Autor: | I. S. Potravnov, V. P. Grinin, N. Kh. Minikulov, N. A. Gorynya |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Astrophysics. 57:491-499 |
| ISSN: | 1573-8191 0571-7256 |
| DOI: | 10.1007/s10511-014-9352-7 |
| Popis: | 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 V r , 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 M p ≤10 M Jup on the mass of the hypothetical companion. Possible reasons for the observed strong fluctuations in the radial velocity of this star are discussed. |
| Databáze: | OpenAIRE |
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