On the Nature of the Purported Common Proper Motion Companions to the Exoplanet Host Star 51 Peg

Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics

Scientific paper

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5 pages, 1 figure, AN, in press

Scientific paper

Greaves (2006) proposed that three red, high proper motion stars within 10 degrees of 51 Peg (NLTT 54007, 54064, & 55547) are co-moving companions to this famous exoplanet host star. While the stars clearly have proper motions similar to 51 Peg, the inferred kinematic parallaxes for these stars produce extremely inconsistent color-magnitude positions 2 to 4 magnitudes below the main sequence. All three stars are likely to be background stars unrelated to 51 Peg.

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