NOAO >   Observing Info >   Approved Programs >   2010A-0318

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Proposal Information for 2010A-0318


PI: Brad N. Barlow, University of North Carolina, bbarlow@physics.unc.edu
Address: Department of Physics and Astronomy, CB 3255, Chapel Hill, NC 27599, USA

CoI: Stephan Geier, Dr. Remeis-Sternwarte Bamberg, Germany
CoI: Pierre Maxted, Astrophysics Group, Keele University, UK
CoI: Uli Heber, Dr. Remeis-Sternwarte Bamberg, Germany
CoI: Tom Marsh, Department of Physics, Warwick University, UK
CoI: Roy Oestensen, Institute for Astronomy, KU Leuven, Belgium
CoI: Alfred Tillich, Dr. Remeis-Sternwarte Bamberg, Germany
CoI: Sebastian Mueller, Dr. Remeis-Sternwarte Bamberg, Germany
CoI: Thomas Kupfer, Dr. Remeis-Sternwarte Bamberg, Germany
CoI: Boris Gaensicke, Department of Physics, Warwick University, UK
CoI: Ralf Napiwotzki, Centre for Astrophysics Research, Univ. of Hertfordshire, UK

Title: HYPER-MUCHFUSS -- Follow up

Abstract: Two classes of spectacular stars have recently been discovered. Hyper-velocity stars (HVS) are moving too fast be bound to our Galaxy. The second class consists of subluminous B (sdB) stars with massive unseen companions, either massive white dwarfs, neutron stars or black holes. Such systems are suggested as progenitors to type Ia Supernovae and Gamma Ray Bursts. We conducted a survey of fast halo subdwarfs in order to find such objects and discovered nearly 170 binary systems. Here we propose follow-up observations to obtain orbital parameters of those candidates most likely to have massive compact companions.


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NOAO >   Observing Info >   Approved Programs >   2010A-0318

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