NOAO >   Observing Info >   Approved Programs >   2010B-0148

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Proposal Information for 2010B-0148


PI: Joshua Schlieder, Stony Brook University, jschlied@ic.sunysb.edu
Address: Dept. of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794-3800, USA

CoI: Michal Simon, Stony Brook University
CoI: Emily Rice, American Museum of Natural History
CoI: Sebastien Lepine, American Museum of Natural History

Title: Low Mass Members in Nearby Young Moving Groups Revealed

Abstract: We are now ready to expand our program that identifies highly probable low-mass members of the nearby young moving groups (NYMGs) to stars of mass ~ 0.1 \msun. This is important 1) To provide high priority targets for exoplanet searches by direct imaging, 2) To complete the census of the membership in the NYMGs, and 3) To provide a well-characterized sample of nearby young stars for detailed study of their physical properties and multiplicity (the median distances of the (beta) Pic and AB Dor groups are ~ 35 pc with ages ~ 12 and 50 Myr respectively). Our proven technique starts with a proper motion selection algorithm, proceeds to vet the sample for indicators of youth, and requires as its last step the measurement of candidate member radial velocities (RVs). So far, we have obtained all RV measurements with the high resolution IR spectrometer at the NASA-IRTF and have reached the limits of its applicability. To identify probable new members in the south, and also those of the lowest mass, we need the sensitivity of PHOENIX at Gemini-S and NIRSPEC at Keck-II.


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NOAO >   Observing Info >   Approved Programs >   2010B-0148

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