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Milli-arcsecond binaries

Published online by Cambridge University Press:  01 October 2007

R. M. Torres ,
L. Loinard ,
A. J. Mioduszewski  and
L. F. Rodríguez
R. M. Torres
Affiliation:
Centro de Radiastronomía y Astrofísica, Universidad Nacional Autónoma de México Apartado Postal 72-3 (Xangari), 58089 Morelia, Michoacán, México email: [email protected], [email protected], [email protected]
L. Loinard
Affiliation:
Centro de Radiastronomía y Astrofísica, Universidad Nacional Autónoma de México Apartado Postal 72-3 (Xangari), 58089 Morelia, Michoacán, México email: [email protected], [email protected], [email protected]
A. J. Mioduszewski
Affiliation:
National Radio Astronomy Observatory, Array Operations Center1003 Lopezville Road, Socorro, NM 87801, USA email: [email protected]
L. F. Rodríguez
Affiliation:
Centro de Radiastronomía y Astrofísica, Universidad Nacional Autónoma de México Apartado Postal 72-3 (Xangari), 58089 Morelia, Michoacán, México email: [email protected], [email protected], [email protected]
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Abstract

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As part of an astrometric program (see Loinard et al. in this volume), we have obtained an unprecedented sample of high-resolution (~ 1 mas) VLBA images of several nearby young stellar systems. As was to be expected, these images revealed interesting new characteristics of these objects. Perhaps the most interesting of these characteristics is the detection of a high rate of very tight binary stars (separations of a few mas) in our sample: of the 9 objects observed to date, 5 are binaries of this type.

Keywords

binaries: generalstars: individual (T Tauri Stars)radiation mechanisms: nonthermalastrometry
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S248: A Giant Step: from Milli- to Micro-arcsecond Astrometry , October 2007 , pp. 208 - 209
Copyright
Copyright © International Astronomical Union 2008

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