Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.190...33b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 190, Jan. 1980, p. 33-42.
Astronomy and Astrophysics
Astronomy
57
Calcium, High Resolution, Interstellar Gas, Line Spectra, Magellanic Clouds, Sodium Vapor, Galactic Structure, Interstellar Extinction, Milky Way Galaxy, Nebulae
Scientific paper
High-dispersion optical observations (typically, FWHM of approximately 15 km/s) of interstellar gas in the Small and Large Magellanic (LMC) Clouds are presented, which were made to determine the structure of the Clouds and to examine the possibility of spiral structure in the LMC. Interstellar Ca II has been studied in three sight-lines associated with the 30 Dor nebula in the LMC, while for the brightest source in the nebula, R 136, complementary Na I observations have been made. All sight-lines show complex interstellar profiles with three principal components occurring between +239 and +300 km/s; the gas exhibits a complicated distribution with a relatively high velocity spread.
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