NOAO >   Observing Info >   Approved Programs >   2009A-0083

Small NOAO Logo

Proposal Information for 2009A-0083


PI: Kevin Luhman, Penn State University, kluhman@astro.psu.edu
Address: Astronomy Department, 525 Davey Lab, University Park, PA 16802, USA

Title: Improving the Mass Estimates of Young Brown Dwarfs

Abstract: Recent surveys of young clusters ((tau)<10 Myr) have reported the discovery of brown dwarfs with masses down to ~8 M_\rm Jup. Data of this kind provide important constraints on the bottom of the mass function. However, the mass estimates of young brown dwarfs are largely determined by their spectral types, which often have large errors. I propose to use optical spectroscopy with GMOS to measure accurate spectral types for the faintest known brown dwarfs in the Upper Sco and Chamaeleon II associations, which will enable more reliable mass estimates.


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 >   2009A-0083

noaoprop-help@noao.edu

Small NOAO Logo