The nebular phase spectra of SN1993J

Details The nebular phase spectra of SN1993J The nebular phase spectra of SN1993J

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ap%26ss.211..323l&link_type=abstract

Astrophysics and Space Science, vol. 211, no.2, p. 323-328

Astronomy and Astrophysics

Astrophysics

4

Calcium, Ejecta, Emission Spectra, Explosions, Forbidden Transitions, Helium Atoms, Ions, Oxygen Atoms, Supernovae, Astronomical Observatories, Charge Coupled Devices, Fine Structure, Stability, Telescopes

Scientific paper

From June 19 to August 27, using the 2.16m telescope in the Beijing Astronomical Observatory, we obtained some low resolution spectra of SN1993J. The forbidden emission lines (O1). (Ca2) were very strong and dominated the spectra. However, the Halpha and He lines were very weak. Many fine structures appeared in the Halpha and (O1) lines. We found that the supernova had entered the nebular phase and strong instability and chemical mixing had occurred in the ejecta.

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