An Interferometric Search for Luminous Companions to 51 Pegasi

Details An Interferometric Search for Luminous Companions to 51 Pegasi An Interferometric Search for Luminous Companions to 51 Pegasi

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...192.1206b&link_type=abstract

American Astronomical Society, 192nd AAS Meeting, #12.06; Bulletin of the American Astronomical Society, Vol. 30, p.834

Astronomy and Astrophysics

Astronomy

Scientific paper

A planet-mass gravitational companion has been infered from accurate radial velocity measurements of the sun-like star 51 Pegasi. Because radial velocity techniques establish only the lower-limit of for companion mass, we have conducted an near-infrared interferometric search for luminous companions to 51 Pegasi with the Palomar Testbed Interferometer. We find no evidence to suggest a luminous companion to 51 Pegasi, and can exclude a companion brighter than a Delta K of 4.27 at the 99% confidence level for the 4.2-day orbital period indicated by spectroscopic measurements. This Delta K corresponds to an upper limit in the companion M_K of 7.30, in turn implying a main-sequence companion mass less than 0.22 M_&sun;.

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