IUE and optical studies of nearby interstellar gas

Details IUE and optical studies of nearby interstellar gas IUE and optical studies of nearby interstellar gas

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.263..565k&link_type=abstract

In ESA Proceedings of an International Symposium on New Insights in Astrophysics. Eight Years of UV Astronomy with IUE p 565-56

Astronomy and Astrophysics

Astrophysics

5

Astronomical Spectroscopy, Interstellar Gas, Iue, Molecular Clouds, Electron Density Profiles, Interstellar Chemistry, Ultraviolet Spectra, Velocity Measurement

Scientific paper

Red-shifted high velocity interstellar gas components with velocities up to ≅100 km s-1 have been detected in the IUE spectra of several stars in the Galactic direction l ≅ 100°, b ≅ -7°. These are compared with complementary high resolution optical observations of the NaD interstellar lines, which allow the distribution of the gas to be mapped more extensively than in earlier surveys. New calculations of the temperature sensitive N(Mg I)/N(Na I) ratio are presented, and used in conjunction with the UV results to partially derive physical conditions within several of the high velocity clouds.

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