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Star formation in BOK globules and low-mass clouds. V - H-alpha emission stars near SA 101, CG13 and CG22
European Southern Observatory.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
1993 (English)In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 267, no 2, 439-446 p.Article in journal (Refereed) Published
Abstract [en]

We have surveyed five fields in the Gum Nebula containing cometary globules, in a search for new regions of low-mass star formation. Seven H-alpha emission stars were found in association with the CG4/CG6/Sa101 cloud complex, and one in association with the CG13 globule. All eight stars are late-type emission line stars, and appear to be low-mass pre-main sequence stars. Low dispersion spectra and optical and IR photometry are presented for the objects, as well as for PH-alpha 92, an already known young star in CG22. Most of the globules surveyed are not associated with H-alpha emission stars. We demonstrate that star formation has occurred in the Gum Nebula over several million years, right up to very recently. 

Place, publisher, year, edition, pages
Springer, 1993. Vol. 267, no 2, 439-446 p.
Keyword [en]
H ALPHA LINE, INTERSTELLAR MATTER, STAR FORMATION, STELLAR MASS, STELLAR SPECTRA, ASTRONOMICAL PHOTOMETRY, INFRARED ASTRONOMY, SKY SURVEYS (ASTRONOMY)
National Category
Astronomy, Astrophysics and Cosmology
Research subject
Astronomy with specialization in Astrophysics
Identifiers
URN: urn:nbn:se:uu:diva-176654OAI: oai:DiVA.org:uu-176654DiVA: diva2:536340
Available from: 2012-06-21 Created: 2012-06-21 Last updated: 2017-12-07Bibliographically approved

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Pettersson, Bertil

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