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A rocky planet transiting a nearby low-mass star
Zachory K. Berta-Thompson, Jonathan Irwin, David Charbonneau +18
M-dwarf stars -- hydrogen-burning stars that are smaller than 60 per cent of the size of the Sun -- are the most common class of star in our Galaxy and outnumber Sun-like stars by…
The rotation and Galactic kinematics of mid M dwarfs in the Solar Neighborhood
Elisabeth R. Newton, Jonathan Irwin, David Charbonneau +3
Rotation is a directly-observable stellar property, and drives magnetic field generation and activity through a magnetic dynamo. Main sequence stars with masses below approximately…
Calibration of the MEarth Photometric System: Optical Magnitudes and Photometric Metallicity Estimates for 1802 Nearby M-dwarfs
Jason A Dittmann, Jonathan M Irwin, David Charbonneau +1
The MEarth Project is a photometric survey systematically searching the smallest stars nearest to the Sun for transiting rocky planets. Since 2008, MEarth has taken approximately t…
An Activity-Rotation Relationship and Kinematic Analysis of Nearby Mid-to-Late-type M Dwarfs
Andrew A. West, Kolby L. Weisenburger, Jonathan Irwin +4
Using spectroscopic observations and photometric light curves of 238 nearby M dwarfs from the MEarth exoplanet transit survey, we examine the relationships between magnetic activit…