Radial Velocity Studies and their Limits: A Case Study of BP Psc

Details Radial Velocity Studies and their Limits: A Case Study of BP Psc Radial Velocity Studies and their Limits: A Case Study of BP Psc

Aug 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1158..209d&link_type=abstract

EXOPLANETS AND DISKS: THEIR FORMATION AND DIVERSITY: Proceedings of the International Conference. AIP Conference Proceedings, V

Computer Science

Substellar Companions, Planets, Infall, Accretion, And Accretion Disks, Photometric, Polarimetric, And Spectroscopic Instrumentation

Scientific paper

Radial velocity studies have provided the majority of all exoplanet discoveries. Using the radial velocity techniques on young stars suffers from problems with magnetic activity jitter, which has been studied for years, and the effects of circumstellar disks, which has remained unstudied. Here we study the disk-embedded star BP Psc using high resolution, high accuracy HARPS spectra. We derive radial velocities, activity indices, and line profile information. We find that the presence of a disk severely limits information about the star. We find that even the line profiles are distorted by the disk reprocessing of the stellar light and we conclude that the disk of BP Psc is highly inhomogenious.

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