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Title: Further spectroscopic observations of SN 1987A
Authors: Anupama, G. C
Prabhu, T. P
Ghosh, K. K
Ashoka, B. N
Giridhar, S
Keywords: Electron Density (Concentration);Forbidden Bands;Line Spectra;Stellar Spectra;Supernova 1987A;H Alpha Line;H Beta Line;Spectrographs
Issue Date: 1988
Publisher: Elsevier
Citation: Vistas in Astronomy, Vol. 31, pp. 261 - 265
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.
Description: Restricted access
ISSN: 0083-6656
Appears in Collections:IIAP Publications

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