Spectrum of SN 1983n in NGC 5236 at maximum light

dc.contributor.author	Prabhu, T. P
dc.date.accessioned	2005-12-07T08:44:05Z
dc.date.available	2005-12-07T08:44:05Z
dc.date.issued	1985-03
dc.identifier.citation	BASI, Vol. 13, No. 1, pp. 68-73	en
dc.identifier.uri	http://hdl.handle.net/2248/648
dc.description.abstract	The spectrum of SN 1983n in NGC 5236 (M83) obtained at its light maximum is presented. The spectrogram was digitized and smoothed using optimal filter technique in Fourier space. The moonlight background was subtracted after smoothing. Though the spectrum conforms to type I classification, it is peculier in that the characteristic 6150 A absorption is very weak and the helium lines are seen in emission. The peculiarity probably owes to the fact that the supernova was underluminous: The identifiable absorption features of HeI, OI, Fe II, S II, Si II and Ca II yield an expansion velocity of 12350 plus or minus 1910 km s/sup-1/, a value consistent with other type I supernovae	en
dc.format.extent	503172 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en
dc.publisher	Astronomical Society of India	en
dc.subject	Supernovae	en
dc.subject	Optical spectroscopy	en
dc.subject	Digital analysis	en
dc.title	Spectrum of SN 1983n in NGC 5236 at maximum light	en
dc.type	Article	en