Optical spectra near maximum light of the type IA supernova 1989B

Details Optical spectra near maximum light of the type IA supernova 1989B Optical spectra near maximum light of the type IA supernova 1989B

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pasp..101..921b&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 101, Oct. 1989, p. 921-924.

Astronomy and Astrophysics

Astronomy

5

Light Curve, Stellar Spectra, Supernovae, Visible Spectrum, Absorption Spectra, Interstellar Extinction, Stellar Envelopes

Scientific paper

Spectra from five nights near maximum light are presented for SN 1989B in NGC 3627. SN 1989B appears to be a typical Type Ia supernova with an envelope expansion velocity of about 10,600 km/s near maximum light. The presence of diffuse interstellar bands and Na I absorption attributable to the interstellar medium (ISM) of NGC 3627 indicates significant obscuration of the supernova. If relations between the strengths of these features and E(B - V) derived for the Galaxy can be applied to the ISM of NGC 3627, the indicated E(B - V) is about 0.8 for SN 1989B.

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