Title: Detection of line-profile variations in high-resolution VLT/UVES spectroscopy of the subdwarf B pulsator PG 1336018 (NY Virginis)
Authors: Vuckovic, Maja ×
Ostensen, Roy
Telting, J. H.
Oreiro Rey, Raquel
Aerts, Conny #
Issue Date: Dec-2008
Publisher: Verlag der Oesterreichischen Akademie der Wissenschaften
Host Document: Communications in Asteroseismology vol:157 pages:381
Abstract: We present an analysis of about 400 high-resolution time-resolved VLT/UVES spectra of the eclipsing subdwarf binary system PG 1336 ‑018 - a rapidly pulsating subdwarf B primary in a short orbit with an M5 companion. We analysed the spectra of PG 1336 ‑018 with the aim to detect the pulsational signal of the primary in line-profile variations. After removing the domi- nant radial-velocity component inherent to the orbital motion, we computed cross-correlation functions for each individual spectrum and assumed these to approximate the average line profile. The dominant pulsation mode is detected in the cross-correlation functions and may lead to the first spectroscopic mode identification for this star.
ISSN: 1021-2043
Publication status: published
KU Leuven publication type: IMa
Appears in Collections:Institute of Astronomy
× corresponding author
# (joint) last author

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