NOAO >   Observing Info >   Approved Programs >   2016A-0214

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Program Information for 2016A-0214


PI: Todd Henry, Georgia State U., thenry@astro.gsu.edu
Address: Department of Physics & Astronomy, 25 Park Place, Room 618, Atlanta 30302 USA

CoI: Jennifer Winters, Georgia State U.
CoI: Elliott Horch, SCSU
CoI: Daniel Nusdeo, Georgia State U.

Title: Searching for Companions to Nearby Stars on Solar System Scales

Abstract: We propose to use the Differential Speckle Survey Instrument (DSSI) on Gemini-S to survey hundreds of the nearest stars to reveal companions. DSSI on Gemini is able to detect companions with separations as small as the Sun to Mercury for stars out to 50 pc. Here we focus on the ubiquitous K and M dwarfs in the southern sky to complement our efforts using Gemini-N for the northern targets. The resulting portrait of single, binary, triple, and higher order multiple star systems will drive research on star formation processes for most stars in the Galaxy, while individual measurements of companion locations and types will be used as benchmarks for decades. Ultimately, we will answer the basic questions of whether or not most stars are single or multiple, by how much the multiplicity changes with stellar mass, and which stars orbit one another in such configurations that make it difficult for the creation of planets.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2016A):  GEM-S-SVC/DSSI -- 25hrs band 1 (GS-2016A-Q-28)


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 >   2016A-0214

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