A SEARCH FOR LINE-SHAPE AND DEPTH VARIATIONS IN 51-PEGASI AND TAU-BOOTIS

Authors
BROWN TM KOTAK R HORNER SD KENNELLY EJ KORZENNIK S NISENSON P NOYES RW
Citation
Tm. Brown et al., A SEARCH FOR LINE-SHAPE AND DEPTH VARIATIONS IN 51-PEGASI AND TAU-BOOTIS, The Astrophysical journal, 494(1), 1998, pp. 85-88
Citations number
13
Categorie Soggetti
Astronomy & Astrophysics
Journal title
The Astrophysical journal → ACNP
ISSN journal
0004637X
Volume
494
Issue
1
Year of publication
1998
Part
2
Pages
85 - 88
Database
ISI
SICI code
0004-637X(1998)494:1<85:ASFLAD>2.0.ZU;2-Y
Abstract
Spectroscopic observations of 51 Pegasi and tau Bootis show no periodi c changes in the shapes of their line profiles; these results for 51 P eg are in significant conflict with those reported by Gray & Hatzes. O ur 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 abs ence of line shape changes is consistent with these stars' radial velo city variability arising from planetary mass companions.