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Nature of Emission-Line Stars in the Outer Orion Region

Published online by Cambridge University Press:  12 April 2016

Makoto Nakano  and
Peter J. McGregor
Makoto Nakano
Affiliation:
Faculty of Education, Oita University, Oita 870-11, Japan
Peter J. McGregor
Affiliation:
Mount Stromlo and Siding Spring Observatories, The Australian National University, A.C.T. 2611, Australia

Abstract

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Near-infrared photometry is reported for 76 emission-line stars in outer regions of the Orion molecular cloud complex. Most of our program stars are selected from the Hα emission-line star catalog of the large-scale Kiso Schmidt survey of the Orion region. We confirm that most of the emission-line stars with strong emission detected in the Kiso survey are typical T Tauri stars with masses in the range 0.5 to 2 M⊙. Low mass stars have therefore continued to form in the outer parts of the Orion region, away from present day massive molecular clouds, until at least as recently as a few million year ago.

Type
X. Stellar Astronomy
Information
International Astronomical Union Colloquium , Volume 148: The Future Utilisation of Schmidt Telescopes , 1995 , pp. 376 - 379
Copyright
Copyright © Astronomical Society of the Pacific 1995

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