Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..90..437w&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 90, no. 2, Feb. 1983, p. 437-444. Research supported by the Science and En
Astronomy and Astrophysics
Astrophysics
3
Absorption Spectra, Cosmic Gases, Early Stars, Interstellar Matter, Nebulae, Spectral Line Width, Astronomical Spectroscopy, Calcium, Chemical Composition, High Resolution, Hydrogen, Line Spectra, Optical Emission Spectroscopy, Potassium, Spectral Resolution
Scientific paper
High resolution optical observations (FWHM ≡ 10-13 km s-1) of the interstellar gas towards the early-type stars HD 164794, HD 164816, and HD 165052 in the M8 Nebula are presented. A high velocity component VLSR = -26 km s-1 has been detected in all 3 stars' spectra. A line profile fitting analysis has been carried out on the observed Ca II and Na I absorption lines to determine cloud component column densities and to subsequently determine the physical and chemical conditions of the associated interstellar gas.
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