Line-profile variation in tau Herculis

Details Line-profile variation in tau Herculis Line-profile variation in tau Herculis

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...356..209m&link_type=abstract

Astronomy and Astrophysics, v.356, p.209-212 (2000)

Astronomy and Astrophysics

Astrophysics

6

Line: Profiles, Stars: Early-Type, Stars: Oscillations, Stars: Variables: General, Stars: Individual: Tau Her

Scientific paper

Based on a time series of high-resolution spectra at He I lambda 4471 and Mg Ii lambda 4481, we have detected the line-profile variation of tau Her, one of the newly discovered Slowly Pulsating B Stars by Hipparcos. A period analysis has been performed for the radial velocities of Mg Ii lambda 4481. A best estimated period of 1.17 d or its one-day alias 0.536 d is different from its photometric period (1.25 d) derived from the Hipparcos mission.

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