Astronomy and Astrophysics – Astronomy
Scientific paper
May 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.199..409p&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 199, May 1982, p. 409-423.
Astronomy and Astrophysics
Astronomy
22
Astronomical Spectroscopy, Interstellar Gas, Supernovae, Ultraviolet Spectra, Visible Spectrum, Absorption Spectra, Data Reduction, Galactic Rotation, Interstellar Matter, Line Spectra
Scientific paper
Bright supernovae in external galaxies offer a rare opportunity to probe the intervening interstellar media over very extended path-lengths, including the disk and halo of the Galaxy and the parent galaxy of the supernova. SN 1980k was discovered in NGC 6946 on 1980 October 29. In the first month after discovery, high resolution optical and ultraviolet observations were obtained to exploit the supernova as a probe of the intervening interstellar media. The obtained data are discussed. In the spectra, absorption lines were observed of Mg I, Mg II, Fe II, Mn II, Ca II and Na I. The absorption lines are attributed to the intervening interstellar media distributed over the very extended line of sight sampled, of order 7 Mpc. These lines are wider and stronger than any previously measured in the quiescent interstellar gas in the halo and disk of the Milky Way and of external galaxies
Benvenuti Piero
Blades Chris J.
Boggess Albert
Boksenberg Alec
Grewing Michael
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