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Hα Emission-Line Stars in Molecular Clouds. I. The NGC 2264 Region
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Astronomy and Space Physics. Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Astronomy and Space Physics, Observational Astronomy.
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2004 (English)In: Astronomical Journal, Vol. 127, no 2, 1117-1130 p.Article in journal (Refereed) Published
Abstract [en]

We present a deep survey of Hα emission-line stars in the NGC 2264

region using wide-field objective prism films. We find 357 Hα

emission-line stars, of which 113 were previously detected, within an

area of 3°×3° centered on the Cone Nebula, with a majority

of stars being concentrated in a dense cluster at the center of the

region. We present a large-scale CO map of NGC 2264 and find a strong

correlation between the cluster of Hα emission-line stars and the

most massive core in the cloud complex. A more extended halo of stars

poorly correlated with the gas may represent stars that have drifted

away from their birth place, suggesting that star formation has taken

place in NGC 2264 for several million years.

Place, publisher, year, edition, pages
2004. Vol. 127, no 2, 1117-1130 p.
Keyword [en]
Stars: Emission-Line, Be, Stars: Formation, Stars:Pre-Main-Sequence
National Category
Astronomy, Astrophysics and Cosmology
Research subject
Astronomy with specialization in Astrophysics
Identifiers
URN: urn:nbn:se:uu:diva-70355DOI: doi:10.1086/380935OAI: oai:DiVA.org:uu-70355DiVA: diva2:98266
Available from: 2005-04-20 Created: 2005-04-20 Last updated: 2012-06-20

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Pettersson, Bertil

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