A Search for Line Shape and Depth Variations in 51 Pegasi and τ Bootis
- 10 February 1998
- journal article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 494 (1) , L85-L88
- https://doi.org/10.1086/311168
Abstract
Spectroscopic observations of 51 Pegasi and tau Bootis show no periodic changes in the shapes of their line profiles; these results for 51 Peg are in significant conflict with those reported by Gray and Hatzes (1997). Our detection limits are small enough to rule out nonradial pulsations as the cause of the variability in tau Boo, but not in 51 Peg. The absence of line shape changes is consistent with these stars' radial velocity variability arising from planetary-mass companions.Comment: 10 pages, 2 figures, plain TeX, accepted for publication in ApJKeywords
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