Search for Exoplanets Transiting Bright Stars using Existing Space-based Data

Details Search for Exoplanets Transiting Bright Stars using Existing Space-based Data Search for Exoplanets Transiting Bright Stars using Existing Space-based Data

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21742907t&link_type=abstract

American Astronomical Society, AAS Meeting #217, #429.07; Bulletin of the American Astronomical Society, Vol. 43, 2011

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Scientific paper

At the current stage of research transiting exoplanets are the only targets that allow determination of many of the key planetary parameters. In this respect the exceptionally high value of TEPs with bright parent stars is well recognized by the scientific community and several missions to perform a wide area space-based transit survey have been proposed. Here we describe a project that partially addresses this issue by using the existing data from one of the instruments on the currently operating space mission STEREO.
STEREO is the third mission in NASA's Solar Terrestrial Probes program. It uses two nearly identical spacecrafts - one on Earth-leading orbit and one on Earth-trailing orbit - each equipped with a suit of five small telescopes to provide a stereoscopic view of the coronal mass ejections as they propagate away from the Sun. As each of these telescopes observes a portion of the heliosphere, they also image the star field in the background. The continuous series of images obtained by the HI-1 instruments are well suited for searching for transiting exoplanets with bright host stars. In one orbit of the satellites the HI-1 images cover a band of ±10° around the ecliptic (18% of the sky). The photometric data series have the sensitivity to detect transiting hot Jupiters and other gas giants with periods up to 20 days and even some Neptune size planets orbiting bright and/or late type stars. On the extreme bright end, the survey is sensitive to some super-Earth size planets, but the available number of target stars is small. A large number of eclipsing binaries and variable stars is also revealed.
This poster will describe the capabilities and limitations of the project and will present preliminary analysis of the existing data for RV discovered planets and an interesting eclipsing binary system.

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