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Probing AU-scale Structure using Spectro-astrometry

Published online by Cambridge University Press:  23 September 2016

Michihiro Takami ,
Jeremy Bailey ,
Antonio Chrysostomou ,
Motohide Tamura  and
Hiroshi Terada
Michihiro Takami
Affiliation:
Department of Physical Sciences, University of Hertfordshire, College Lane, Hatfield, Herts, AL10 9AB, UK
Jeremy Bailey
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping, NSW 1710, Australia
Antonio Chrysostomou
Affiliation:
Department of Physical Sciences, University of Hertfordshire, College Lane, Hatfield, Herts, AL10 9AB, UK
Motohide Tamura
Affiliation:
National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588, Japan
Hiroshi Terada
Affiliation:
Subaru Telescope, 650 North A'ohoku Place, Hilo, Hawaii 96720, USA

Abstract

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The circumstellar environment within 10 AU of young stars are of particular interest for star and planet formation. Unfortunately, present imaging facilities such as the Hubble Space Telescope or adaptive optics on 10-m telescopes cannot resolve this region. We have proved that “spectro-astrometry” is a powerful technique for discovering pre-main-sequence binaries, determining kinematics of outflows and providing evidence for gaps in circumstellar disks — all down to AU scales. In this paper, we summarise our progress to date.

Type
Part 8: Disks
Information
Symposium - International Astronomical Union , Volume 221: Star Formation at High Angular Resolution , 2004 , pp. 417 - 424
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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