A Sub-stellar Companion around the F7 V Star HD 8673

Details A Sub-stellar Companion around the F7 V Star HD 8673 A Sub-stellar Companion around the F7 V Star HD 8673

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010apj...717..348h&link_type=abstract

The Astrophysical Journal, Volume 717, Issue 1, pp. 348-356 (2010).

Astronomy and Astrophysics

Astronomy

3

Brown Dwarfs, Planetary Systems, Stars: Individual: Hd 8673, Stars: Low-Mass, Techniques: Radial Velocities

Scientific paper

In order to investigate the dependence of planet formation on stellar mass, we have been monitoring a sample of F-type main-sequence stars with the 2.0 m Alfred-Jensch telescope of the Thüringer Landessternwarte Tautenburg. This survey is based on high-precision radial velocity (RV) measurements using the coudé échelle spectrograph and an iodine absorption cell. We present RV measurements of the F7 V star HD 8673 that show a long-term variability of 1634 days with a semi-amplitude K = 288 m s-1 that can be explained most reasonably by an orbiting sub-stellar companion with a minimum mass of 14.2 M Jup in a high-eccentricity (e = 0.723) Keplerian orbit.
Based on observations obtained at the 2.0-m Alfred-Jensch telescope at the Thüringer Landessternwarte Tautenburg.

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