NOAO >   Observing Info >   Approved Programs >   2017B-0003

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Program Information for 2017B-0003


PI: Andrei Tokovinin, NOAO, atokovinin@ctio.noao.edu
Address: CTIO, AURA, Casilla 603, La Serena Chile

Title: Origin of close spectroscopic subsystems in solar-type multiple stars

Abstract: Using the complete sample of 4846 solar-type stars within 67 pc, we will provide the unbiased statistics of close ($P<1000$d) subsystems in hierarchical multiples. Diagnostic features such as period and eccentricity distributions, mass and period ratios will help to establish the relevance of alternative formation mechanisms of those subsystems and will lead to the understanding (eventually predicting) stellar multiplicity. This work continues the CHIRON survey interrupted in 2016.

Program Type: Standard/LCO

Scheduled Nights:
Run 1 (2017B):  LCO-1m/NRES -- 10hrs


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 >   2017B-0003

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