The Radial Velocity Effects of Stellar Surface Phenomena

Details The Radial Velocity Effects of Stellar Surface Phenomena The Radial Velocity Effects of Stellar Surface Phenomena

Feb 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1094..152s&link_type=abstract

COOL STARS, STELLAR SYSTEMS AND THE SUN: Proceedings of the 15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun.

Physics

4

Pulsations, Oscillations, And Stellar Seismology, Planetary Nebulae, Star Formation

Scientific paper

Radial velocity (RV) studies have been a very successful tool for finding and characterizing extrasolar planets. As RV precision increases, and planet searches press to younger, hotter, and evolved stars, however, this method will more and more bump against limitations set by the host stars themselves. Cool stellar surfaces present a range of troublesome phenomena such as spots, plage, and convective cells, which can confuse RV measurements. I review how these phenomena affect precision RV, scaling laws and timescales which characterize their properties, and some methods to mitigate, circumvent, or correct for their effects.

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