NOAO >   Observing Info >   Approved Programs >   2011A-0518

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Proposal Information for 2011A-0518


PI: Eric Bubar, University of Rochester, ebubar@pas.rochester.edu
Address: Physics Department, 459 Bausch and Lomb Hall, Rochester, NY 14620, United States

CoI: Mark Pecaut, University of Rochester
CoI: Fred Moolekamp, University of Rochester
CoI: Eric Mamajek, University of Rochester

Title: Where are the Young, Nearby, Northern Associations?

Abstract: The primary goal of this research project is to develop a picture of the star formation history of the nearby (<100 pc), very young (age< 100 Myr) stars in the solar neighborhood by identifying solar-type (F, G and K) members of new, young, pre-main sequence groups. With robust color-magnitude, proper motion, and X-ray luminosity criteria we have uncovered previously unidentified populations of potentially young nearby stars. The spectra that we obtain will be utilized to confirm youth through spectroscopic diagnostics (e.g. H(alpha) and lithium equivalent widths) and derive radial and rotational velocities for deriving space velocities and identifying stars conducive to a moderate resolution spectroscopic abundance analysis. Given the current census of known nearby young stellar groups, we predict that there should be several new groups of < 100 Myr in the 50-100 pc distance range which have yet to be discovered, and some of these may be in the northern sky.


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 >   2011A-0518

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