Kinematics of the cometary globules in the Gum Nebula

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/762

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DC Field	Value	Language
dc.contributor.author	Sridharan, T.K.	-
dc.date.accessioned	2005-12-21T09:12:16Z	-
dc.date.available	2005-12-21T09:12:16Z	-
dc.date.issued	1992	-
dc.identifier.citation	Journal of Astrophysics and Astronomy, 1992, Vol. 13, p217-239.	en
dc.identifier.issn	0250-6335	-
dc.identifier.uri	http://hdl.handle.net/2289/762	-
dc.description.abstract	We report a study of the kinematics of the cometary globules in the Gum Nebula using the J = 1 → 0 transition line of ¹²CO. A morphological center for the system with which 60 % of the globules are associated is identified. It is shown that the observed radial velocities of the heads of the globules are consistent with an expansion of the system. Systematic velocity gradients are present along some of the tails. The estimated expansion age and the tail stretching age are both ~ a few million years, suggesting a common origin for the expansion and the formation of the tails. The presence of young stars of similar ages in some of the globules points to star formation triggered by the same cause. Possible scenarios are briefly discussed.	en
dc.format.extent	1842305 bytes	-
dc.format.mimetype	application/pdf	-
dc.language.iso	en	en
dc.publisher	Indian Academy of Sciences, Bangalore, India.	en
dc.rights	Indian Academy of Sciences, Bangalore, India.	en
dc.subject	Cometary globules;	en
dc.subject	Gum Nebula;	en
dc.subject	star formation;	en
dc.title	Kinematics of the cometary globules in the Gum Nebula	en
dc.type	Article	en
Appears in Collections:	Research Papers (A&A)

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