NOAO >   Observing Info >   Approved Programs >   2016B-0213

Small NOAO Logo

Program Information for 2016B-0213


PI: Adric R Riedel, California Institute of Technology, arr@astro.caltech.edu
Address: Department of Astronomy, MC 249-17, 1200 East California Blvd, Pasadena, CA 91125 USA

CoI: Lynne Hillenbrand, California Institute of Technology

Title: The Tight Multiplicity of lam Ori

Abstract: We propose to study the multiplicity of the $lambda$ Orionis (Collinder 69) open cluster, using Hydra on WIYN. With Hydra’s echelle mode, we will obtain spectra of hundreds of cluster members at sufficient resolution to obtain radial velocities and identify single- and double-lined spectroscopic binaries within the cluster. The multiplicity of $lambda$ Orionis will be compared to other nearby young open clusters whose multiplicity fractions have already been studied, to provide empirical data on the multiplicity evolution of stars in clusters. The question that we hope to answer from our comparative analysis of other studies of young clusters and the field, combined with our $lambda$ Ori data, is: how do binary (and triple) star separations evolve over time? Do they match current predictions? What are the implications for planet formation and disk evolution?

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2016B):  WIYN/HYDR -- 2n on Dec 28 - Dec 29 2016
Run 2 (2016B):  WIYN/HYDR -- 1n on Jan 30 - Jan 31 2017


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 >   2016B-0213

noaoprop-help@noao.edu

Small NOAO Logo