Upper Limits on a Planetary Companion to Proxima Centauri

Details Upper Limits on a Planetary Companion to Proxima Centauri Upper Limits on a Planetary Companion to Proxima Centauri

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998dps....30.2301c&link_type=abstract

American Astronomical Society, DPS meeting #30, #23.01; Bulletin of the American Astronomical Society, Vol. 30, p.1056

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the results of five years of precise radial-velocity monitoring of Proxima Centauri, from the European Southern Observatory. All of the data have been acquired using the ESO 1.4m Coude Auxiliary Telescope and Coude Echelle Spectrograph in La Silla. An I_2 gas absorption cell is used as the velocity metric. This 11.05 magnitude M5V star is the faintest star on our ESO program list. Photon noise limits our velocity precision to about 65 m s(-1) . Even at this level of precision, our data allow us to place significant limits on the presence of planetary-mass companions to our nearest stellar neighbor.

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