Further spectroscopic observations of SN 1987A

dc.contributor.author	Anupama, G. C
dc.contributor.author	Prabhu, T. P
dc.contributor.author	Ghosh, K. K
dc.contributor.author	Ashoka, B. N
dc.contributor.author	Giridhar, S
dc.date.accessioned	2009-03-25T10:58:31Z
dc.date.available	2009-03-25T10:58:31Z
dc.date.issued	1988
dc.identifier.citation	Vistas in Astronomy, Vol. 31, pp. 261 - 265	en
dc.identifier.issn	0083-6656
dc.identifier.uri	http://hdl.handle.net/2248/4423
dc.description	Restricted access
dc.description.abstract	Spectroscopic observations of SN 1987a obtained during 1987 August 30 – September 8 from Vainu Bappu Observatory, Kavalur, are presented; the spectrum is compared and contrasted with the spectra recorded at earlier epochs. The lines of Fe II are weakening, whereas the forbidden lines are strengthening. The presence of [Ca II] and the emergence of [0 I] suggests that the electron density in the envelope was about 10/sup9/cm/sup3 at the end of May, and reduced to a value below 10/sup 8/cm/sup 3 by the end of August.	en
dc.language.iso	en	en
dc.publisher	Elsevier	en
dc.relation.uri	http://dx.doi.org/10.1016/0083-6656(88)90208-5	en
dc.subject	Electron Density (Concentration)	en
dc.subject	Forbidden Bands	en
dc.subject	Line Spectra	en
dc.subject	Stellar Spectra	en
dc.subject	Supernova 1987A	en
dc.subject	H Alpha Line	en
dc.subject	H Beta Line	en
dc.subject	Spectrographs	en
dc.title	Further spectroscopic observations of SN 1987A	en
dc.type	Article	en