PI: Andrei Tokovinin, NOAO, firstname.lastname@example.org
Address: CTIO, Casilla 603 AURA, La Serena Chile
Title: Spectroscopic orbits in nearby triple systems
Abstract: This project fills missing data in a large sample of solar-type triple stars within 67pc to elucidate the statistics of hierarchical multiples. Follow-up observations of spectroscopic subsystems discovered with CHIRON in 2014-2015 and other previously known spectroscopic subsystems in triple stars will determine their unknown periods to define the period distribution at $P<1000$,d. Owing to the large size of the parent volume-limited sample, this distribution reveals for the first time features related to the formation of subsystems and their dynamical evolution. However, it is necessary to determine the remaining unknown periods before making firm conclusions and comparing observations with theoretical models of tidal evolution.
Program Type: Standard/Galactic
Run 1 (2018A): CT-1.5m-SVC/CHIRON -- 40hrs
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360