NA I interstellar absorption in the direction of two LMC supergiants in the field of SN 1987A

Details NA I interstellar absorption in the direction of two LMC supergiants in the field of SN 1987A NA I interstellar absorption in the direction of two LMC supergiants in the field of SN 1987A

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...339l..63m&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 339, April 15, 1989, p. L63-L66.

Astronomy and Astrophysics

Astronomy

18

Absorption Spectra, Interstellar Matter, Magellanic Clouds, Sodium, Supergiant Stars, Supernova 1987A, Disk Galaxies, Line Of Sight, Line Spectra, Ultraviolet Astronomy

Scientific paper

Striking differences are noted among the three contiguous lines of sight of the present Na I interstellar line observations of the two LMC supergiants Sk -69 deg 203 and Sk -69 deg 211, at few arcmin from SN 1987A. The Galactic components have different strengths, implying inhomogeneities of the Galactic disk's interstellar gas on a scale of tenths of parsecs. The main LMC absorption shows strength and radial velocity variations between each pair of the three lines of sight, suggesting a complex distribution of the main body of the LMC interstellar gas in the direction of the SN.

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