The Galactic abundance gradient from supernova remnant observations

Details The Galactic abundance gradient from supernova remnant observations The Galactic abundance gradient from supernova remnant observations

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...115..315b&link_type=abstract

Astronomy and Astrophysics, vol. 115, no. 2, Nov. 1982, p. 315-320.

Astronomy and Astrophysics

Astrophysics

35

Galactic Structure, Interstellar Matter, Supernova Remnants, Abundance, Hydrogen, Milky Way Galaxy, Nitrogen, Oxygen, Photoionization

Scientific paper

Using published data on H-alpha, forbidden N II, and forbidden S II relative line intensities for galactic supernova remnants (SNR), it is shown that there is strong evidence for a Galactic abundance gradient in nitrogen. This data has been analyzed using the shock modeling sections of a new general-purpose code to yield local nitrogen and sulphur abundance gradients of -0.095 dex/kpc and -0.07 dex/kpc respectively, in a very good agreement with that obtained by different and independent techniques.

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