A Planet Orbiting the Star ρ Coronae Borealis
Open Access
- 10 July 1997
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 483 (2) , L111-L114
- https://doi.org/10.1086/310754
Abstract
We report the discovery of near-sinusoidal radial velocity variations of the G0V star ρ CrB, with period 39.6 days and amplitude 67 m s-1. These variations are consistent with the existence of an orbital companion in a circular orbit. Adopting a mass of 1.0 M☉ for the primary, the companion has minimum mass about 1.1 Jupiter masses and orbital radius about 0.23 AU. Such an orbital radius is too large for tidal circularization of an initially eccentric orbit during the lifetime of the star, and hence we suggest that the low eccentricity is primordial, as would be expected for a planet formed in a dissipative circumstellar disk.Keywords
All Related Versions
This publication has 28 references indexed in Scilit:
- Stars resembling the SunThe Astronomy and Astrophysics Review, 1996
- A Planet Orbiting 47 Ursae MajorisThe Astrophysical Journal, 1996
- Determination of effective temperatures for an extended sample of dwarfs and subdwarfs (F0-K5)Astronomy and Astrophysics Supplement Series, 1996
- Attaining Doppler Precision of 3 M s-1Publications of the Astronomical Society of the Pacific, 1996
- Magnetic Field and Rotation in Lower Main-Sequence Stars: An Empirical Time-Dependent Magnetic Bode's Relation?The Astrophysical Journal, 1996
- Proximity of Jupiter-Like Planets to Low-Mass StarsScience, 1995
- Chromospheric variations in main-sequence starsThe Astrophysical Journal, 1995
- The AFOE: A spectrograph for precise Doppler studiesPublications of the Astronomical Society of the Pacific, 1994
- The Chemical Composition and Ultra-Violet Excess of G DwarfsMonthly Notices of the Royal Astronomical Society, 1967
- UBV Photometry of 300 G and K Type StarsMonthly Notices of the Royal Astronomical Society, 1962