Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994pasj...46l.187s&link_type=abstract
PASJ: Publications of the Astronomical Society of Japan (ISSN 0004-6264), vol. 46, no. 5, p. L187-L190
Astronomy and Astrophysics
Astronomy
5
Absorption Spectra, Calcium, Carbon, Continuous Spectra, Helium, Hydrogen, Iron, Light (Visible Radiation), Mathematical Models, Silicon, Sodium, Spectra, Supernovae, Carbon Monoxide, H Alpha Line, Reflecting Telescopes, Spectrographs, Spectroscopy
Scientific paper
We present the optical spectra of supernova (SN) 1994I which occurred in M51. The observations were made during a period from a premaximum phase 10 hr after the discovery to one week past the maximum light. The earliest spectrum was a continuum with broad and shallow absorption features. The spectrum showed considerable evolution with time, the continuum becoming redder and the absorption features becoming more pronounced. Since the spectra closely resemble those of SN 1983I and 1983V, we classify SN 1994I as being Type-Ic. The absorption features were identified following theoretical spectra. Some results from an analysis of the interstellar Na I D absorption line in M51 are also presented.
Aoki Kentaro
Ishigaki Tsuyoshi
Kosugi George
Maemura Hiroyuki
Ohtani Hiroshi
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