Photometric Search for Exoplanets with the NASA AMES Vulcan Camera

Details Photometric Search for Exoplanets with the NASA AMES Vulcan Camera Photometric Search for Exoplanets with the NASA AMES Vulcan Camera

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...19410507c&link_type=abstract

American Astronomical Society Meeting 194, #105.07

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Scientific paper

The NASA Ames Research Center's Vulcan camera is being used for a photometric search for transits of 51--Pegasus type planets around nearby stars. The search is conducted by imaging a large region of the sky ( ~ 7 degrees x 7 degrees) continuously each night for one to two months. We currently have substantial data sets for three fields. With our current data reduction techniques we achieve 0.2 - 0.8 hour-to-hour relative photometric precision on 6000 ninth to twelfth magnitude stars in each field. These data provide information on variable stars with timescales of 15 minutes to ~ 30 days. Since our data analysis routines are designed to detect transits of short-period planets, we are most sensitive to short period variables. Using a matched-filter detection routine we have detected eclipsing binaries with secondary eclipses smaller than 5 detect short period variables with less than 1 Longer timescale variables are found by inspecting light curves, hence with less sensitivity. Within one field we have identified ~ 40 eclipsing binaries, several hundred other short period variables, and nearly one hundred longer period variables. Work is continuing on classifying these stars and producing precise relative light curves for stars in the other fields.

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