Gl 176 radial velocities (Forveille+, 2009)

Details Gl 176 radial velocities (Forveille+, 2009) Gl 176 radial velocities (Forveille+, 2009)

Feb 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ycat..34930645f&link_type=abstract

VizieR On-line Data Catalog: J/A+A/493/645. Originally published in: 2009A&A...493..645F

Other

Stars: Late-Type, Planets, Radial Velocities

Scientific paper

A 10.24-day Neptune-mass planet was recently announced as orbiting the nearby M2 dwarf Gl 176, based on 28 radial velocities measured with the HRS spectrograph on the Hobby-Heberly Telescope. We obtained 57 radial velocities of Gl 176 with the ESO 3.6m telescope and the HARPS spectrograph, which is known for its sub-m/s stability. The median photon-noise standard error of our measurements is 1.1m/s, and the 4-year period over which they were obtained overlaps considerably with the epochs of the HET measurements. The HARPS measurements show no evidence of a signal at the period of the putative HET planet, suggesting that its detection was spurious. We do find, on the other hand, strong evidence of a lower mass 8.4MEarth planet, in a quasi-circular orbit and at the different period of 8.78 days.
(1 data file).

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