Kepler Mission Moved: Forwarding Address RA=19h 22m 40s, Dec=+44° 30′ 00″

Details Kepler Mission Moved: Forwarding Address RA=19h 22m 40s, Dec=+44° 30′ 00″ Kepler Mission Moved: Forwarding Address RA=19h 22m 40s, Dec=+44° 30′ 00″

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005dps....37.3108j&link_type=abstract

American Astronomical Society, DPS meeting #37, #31.08; Bulletin of the American Astronomical Society, Vol. 37, p.684

Astronomy and Astrophysics

Astronomy

1

Scientific paper

A trade study was conducted to quantify the benefits of moving NASA Discovery's Kepler Mission to a higher galactic latitude, b=+13.28° . We examined the extent of the background binary confusion problem relative to the number of primary target stars: those stars for which Kepler can detect transiting habitable planets ≥ 1; Rearth. A Monte Carlo model of the Field of View (FOV) was constructed with the stellar population modeled using the Besançon galactic model (Robin et al. 2003). The number of primary target stars decreases by 4% and 7% from the original FOV center for a +5° and a +10° increase in b, respectively.
We chose late, main sequence stars with 8.5≤ R ≤ 16.5 as target stars. For each target, background stars were placed randomly in the star's photometric aperture and half were selected as binaries. The orbital period and eccentricity were defined as per Duquennoy and Mayor (1991), with the remaining orbital elements chosen randomly. False positives were determined as those binaries that injected a detectable photometric signal for which none of the following were observed: disparities between secondary and primary eclipse depths, durations or epoch timings, or motion of the photocenter.
The number of expected false positives drops precipitously with increasing b. For the new FOV we expect no false positives mimicking habitable, Earth-sized planets. We do expect ˜18 short-period (P<3 days) false positives. A few false positives with radii >;1.4; Rearth are expected for P;>;3 days. Finally, candidates identified in the Kepler Mission data will be subjected to both ground-based and space-based follow-up observations, which should eliminate most of these remaining false positives.
Support for this work came from the Kepler Mission Science Office at NASA Ames Research Center.

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