The nitrogen/oxygen abundance ratio in type II supernovae

Details The nitrogen/oxygen abundance ratio in type II supernovae The nitrogen/oxygen abundance ratio in type II supernovae

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pazh...12..293c&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 12, Apr. 1986, p. 293-299) Soviet Astronomy Letters (ISSN 0360-0327), vol. 12, Mar.-Apr

Astronomy and Astrophysics

Astronomy

Abundance, Infrared Spectra, Nitrogen, Oxygen, Stellar Mass, Supernovae, Absorption Spectra, Line Spectra, Near Infrared Radiation, Stellar Envelopes

Scientific paper

Two estimates of the upper limit of the N/O ratio are obtained by two methods from optical spectra of the type II supernovae SN 1970g and SN 1969l. In both cases N/O < 1 unlike the higher ratio N/O > 2 found earlier for SN 1979c. This difference is suggested to be due to the smaller mass of the envelope of the SN 1979c as compared with the former two supernovae.

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