Bulge-Disk Evolution in Interacting Bulgeless Galaxies

Mousumi Das; Ramya, S; Sengupta, C; Mishra, K

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dc.contributor.author	Mousumi Das
dc.contributor.author	Ramya, S
dc.contributor.author	Sengupta, C
dc.contributor.author	Mishra, K
dc.date.accessioned	2014-02-28T13:41:49Z
dc.date.available	2014-02-28T13:41:49Z
dc.date.issued	2013-10
dc.identifier.citation	Astronomical Society of the Pacific Conference Series, Vol. 477, pp. 141-144	en
dc.identifier.isbn	978-1-58381-839-8
dc.identifier.uri	http://hdl.handle.net/2248/6553
dc.description	Restricted Access	en
dc.description.abstract	Bulgeless galaxies are an extreme class of late type spiral galaxies that have practically no bulge and are nearly pure disk in morphology. Their lack of evolution is a puzzle for theories of galaxy formation and the secular evolution of galaxy disks. However, one of the processes by which these galaxies could evolve is through interactions with other galaxies. In this study we present radio (GMRT) observations of star formation in a sample of bulgeless galaxies. We did followup Hα imaging and optical spectroscopy of two galaxies, NGC 3445 and NGC 4027. Both galaxies have extended emission associated with their tidal interactions. Their nuclei show ongoing star formation but no signs of AGN activity. The R band images suggest that their centers have oval distortions or pseudobulges that may later evolve into larger bulges. Thus interactions are an important trigger for the formation of bulges in such disk dominated systems.	en
dc.language.iso	en	en
dc.publisher	Astronomical Society of the Pacific	en
dc.relation.uri	http://aspbooks.org/a/volumes/article_details/?paper_id=35810	en
dc.rights	© Astronomical Society of the Pacific	en
dc.title	Bulge-Disk Evolution in Interacting Bulgeless Galaxies	en
dc.type	Article	en