NOAO >   Observing Info >   Approved Programs >   2013B-0340

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Proposal Information for 2013B-0340


PI: John Gizis, University of Delaware, gizis@udel.edu
Address: Physics Department, 104 The Green Rm 217, Newark, DE 19716, USA

Title: Starspots and Weather on an L Dwarf

Abstract: We have been monitoring the nearby L1 dwarf WISEP J190648.47+401106.8 with the Kepler space telescope and ground-based facilities. The 1.25 years of Kepler data reveal the existence of a long-lived surface feature, probably due to a starspot(s), with a rotation period of 8.9 hours and an amplitude of 1.5%. We now propose CCD monitoring with the KPNO 2.1m over three nights to obtain color information. Our proposed observations will also reveal whether this L dwarf shows the short timescale variations reported in other L dwarfs and attributed to rapid weather-like evolution of clouds.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2013B-0340

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