Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976mnras.176p..45h&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 176, July 1976, p. 45P, 46P.
Astronomy and Astrophysics
Astronomy
2
Absorption Spectra, D Lines, Interstellar Gas, Line Spectra, High Speed, Interstellar Radiation, Sodium
Scientific paper
Independent observations of the Na I D2 line toward Delta Sco are described which show that the two high-velocity absorption components reported by Hicks et al. (1975) are not of normal interstellar origin. A portion of the spectrum of Delta Sco near the D2 line is presented, and it is proposed that the two absorption components may have been of atmospheric origin, although their separation and relative intensities do not suggest any obvious counterparts within the observed telluric spectrum.
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