Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21714020b&link_type=abstract
American Astronomical Society, AAS Meeting #217, #140.20; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
Late-type stars may be ideal candidates for detection of Earth-mass planets - lower stellar mass corresponds to larger radial-velocity amplitude and deeper transit depth for a given planet mass/size. Low-mass stars are only good targets, however, if they can be observed at noise levels similar to those for solar-type stars. As an exploration of the inherent variability of low-mass stars, we have identified a sample of 63 nearby M dwarfs within the Kepler field of view. The Kepler lightcurves for these stars generally vary by 1% over the 33-day observational window. After subtraction of gradual long-term trends, only a handful of the stars exhibit variability above the photon-noise limit (typically 0.1-1.0 mmag). We conclude that >90% of M dwarfs are quiet within the several hour timeframe appropriate for detection of planetary transits.
Bryden Geoffrey
Ciardi David R.
NStED Science Team
Stauffer John
No associations
LandOfFree
Kepler Measurements of M Star Variability does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Kepler Measurements of M Star Variability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kepler Measurements of M Star Variability will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1394093