التفاصيل البيبلوغرافية
| العنوان: |
Further spectroscopic observations of SN 1987a |
| المؤلفون: |
Anupama, G.C., Prabhu, T.P., Ghosh, K.K., Ashoka, B.N., Giridhar, S., Kameswara Rao, N. |
| المصدر: |
Vistas in Astronomy; January 1988, Vol. 31 Issue: 1 p261-265, 5p |
| مستخلص: |
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 109/cm3at the end of May, and reduced to a value below 108/cm3by the end of August. |
| قاعدة البيانات: |
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