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Astrometry in the Service of Planet Formation Studies: Disk Lifetimes in Nearby Star Forming Regions and a Planet Candidate around a Mature Brown Dwarf

Published online by Cambridge University Press:  06 January 2014

Alycia J. Weinberger ,
Alan P. Boss  and
Guillem Anglada-Escudé
Alycia J. Weinberger
Affiliation:
Department of Terrestrial Magnetism, Carnegie Institution of Washington 5241 Broad Branch Rd NW, Washington, DC 20015USA email: weinberger@dtm.ciw.edu
Alan P. Boss
Affiliation:
Department of Terrestrial Magnetism, Carnegie Institution of Washington 5241 Broad Branch Rd NW, Washington, DC 20015USA email: weinberger@dtm.ciw.edu
Guillem Anglada-Escudé
Affiliation:
Universität Göttingen, Institut für Astrophysik Friedrich-Hund-Platz 1, 37077 Göttingen, Germany email: guillem.anglada@gmail.com
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Abstract

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We present preliminary astrometric results aimed at understanding the lifetime of circumstellar disks and potential for planet formation. We have obtained parallaxes to stars in the TW Hydrae, Upper Scorpius, and Chamaeleon I stellar associations. These enable new estimates for the ages of the stars. We are also performing the Carnegie Astrometric Planet Search of nearby low mass stars for gas giant planets on wide orbits. We have our first candidate around a mature brown dwarf.

Keywords

astrometryplanetary systems: formationstars: pre–main-sequence
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S299: Exploring the Formation and Evolution of Planetary Systems , June 2013 , pp. 230 - 231
Copyright
Copyright © International Astronomical Union 2013 

References

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Boss, A. P., Weinberger, A. J., Anglada-Escudé, G., Thompson, I. B., Burley, G., Birk, C., Pravdo, S. H., Shaklan, S. B., Gatewood, G. D., Majewski, S. R., & Patterson, R. J. 2009, PASP, 121, 1218CrossRefGoogle Scholar
Carpenter, J. M., Mamajek, E. E., Hillenbrand, L. A., & Meyer, M. R. 2006, ApJ, 651, L49CrossRefGoogle Scholar
Weinberger, A. J., Anglada-Escudé, G., & Boss, A. P. 2013, ApJ 762 118 A. P.Google Scholar