NOAO >   Observing Info >   Approved Programs >   2013A-0048

Small NOAO Logo

Proposal Information for 2013A-0048


PI: Markus Janson, Princeton University (Astrophysics), janson@astro.princeton.edu
Address: Department of Astrophysical Sciences, Peyton Hall, Princeton, NJ, 08544-1001, USA

CoI: Ray Jayawardhana, University of Toronto
CoI: David Lafreniere, University of Montreal
CoI: John Gizis, University of Delaware
CoI: Mariangela Bonavita, Univ. of Toronto

Title: Proper motion follow-up of young planet and brown dwarf candidates in Sco-Cen

Abstract: In previous surveys of the young Sco-Cen region, we and others have discovered a number of substellar companions with separations of up to several hundreds of AU, some of which have mass ratios to the primary star of only 1%. Such properties challenge both star and planet formation mechanisms. Motivated by this issue, we started a NICI survey of a larger sample of stars in Sco-Cen in 2011A (GS-2011Q-44). In total, 138 stars have been observed in the survey, with 55 detected candidates having been followed up in 2012A to test for common proper motion. We have already confirmed and published 3 new substellar companions from this survey. We now propose to perform the final follow-up efforts by observing 11 remaining targets. With a minor requirement of 2.2 hours, these observations will finalize the survey, potentially yield the widest, youngest, and lowest-mass planetary systems ever imaged directly, and provide key insights to the formation and early evolution of planets.


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 >   2013A-0048

noaoprop-help@noao.edu

Small NOAO Logo