Precise Photometry and Spectroscopy of Transits
Astrophysics
2007-10-08 v1
Abstract
A planetary transit produces both a photometric signal and a spectroscopic signal. Precise observations of the transit light curve reveal the planetary radius and allow a search for timing anomalies caused by satellites or additional planets. Precise measurements of the stellar Doppler shift throughout a transit (the Rossiter-McLaughlin effect) place a lower bound on the stellar obliquity, which may be indicative of the planet's migration history. I review recent results of the Transit Light Curve project, and of a parallel effort to measure the Rossiter effect for many of the known transiting planets.
Keywords
Cite
@article{arxiv.0710.1098,
title = {Precise Photometry and Spectroscopy of Transits},
author = {Joshua N. Winn},
journal= {arXiv preprint arXiv:0710.1098},
year = {2007}
}
Comments
8 pages, to appear in "Extreme Solar Systems," ASP Conference Series, ed. Debra Fischer, Fred Rasio, Steve Thorsett and Alex Wolszczan