Active star formation at intermediate Galactic latitude: the case of IRAS 06345−3023

We report the discovery of a small aggregate of young stars seen in high-resolution, deep near-infrared (JHK S) images towards IRAS 06345−3023 in the outer Galaxy and well below the mid-plane of the Galactic disc. The group of young stars is likely to be composed of low-mass stars, mostly Class I yo...

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Bibliographic Details
Published inMonthly notices of the Royal Astronomical Society Vol. 448; no. 3; pp. 2013 - 2018
Main Authors Yun, J. L., Palmeirim, P. M.
Format Journal Article
LanguageEnglish
Published London Oxford University Press 11.04.2015
Subjects
Accretion disks
Astronomy
Carbon monoxide
Discs
Disks
Emission
Molecular clouds
Molecules
Star & galaxy formation
Star formation
Stars
stars: formation
Galaxy: stellar content
ISM: Individual objects: IRAS 06345-3023
ISM: clouds
dust, extinction
infrared: stars
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Summary:We report the discovery of a small aggregate of young stars seen in high-resolution, deep near-infrared (JHK S) images towards IRAS 06345−3023 in the outer Galaxy and well below the mid-plane of the Galactic disc. The group of young stars is likely to be composed of low-mass stars, mostly Class I young stellar objects. The stars are seen towards a molecular cloud whose CO map peaks at the location of the IRAS source. The near-infrared images reveal, additionally, the presence of nebular emission with rich morphological features, including arcs in the vicinity of embedded stars, wisps and bright rims of a butterfly-shaped dark cloud. The location of this molecular cloud as a new star formation site well below the Galactic plane in the outer Galaxy indicates that active star formation is taking place at vertical distances larger than those typical of the (thin) disc.
Bibliography:ObjectType-Article-1
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content type line 23
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/stv152