NOAO >   Observing Info >   Approved Programs >   2012B-0116

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Proposal Information for 2012B-0116


PI: Stella Kafka, Carnegie Institution of Washington (Terrestrial Magn.), skafka@gmail.com
Address: Department of Terrestrial Magnetism, 5241 Broad Branch Road, Washington, DC 20015-1305, USA

CoI: Roberto De Propris, European Southern Observatory

Title: The mixing of blue stragglers

Abstract: We propose to obtain high resolution spectroscopy for a sample of 17 blue stragglers in M67, in order to measure abundances of Beryllium, Carbon, Oxygen and the Carbon isotope (13C/12C) abundance ratio. The main aim of this project is to measure indications of deep mixing and therefore elucidate the processes responsible for the formation of these stars, whether stellar collisions, WUMa type mass transfer or Algol-like binary evolution. The data will also allow us to measure the importance of magnetic fields and search for faint companions via their effect on other spectral lines


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 >   2012B-0116

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