A very high resolution study of emission line widths in Galactic and extragalactic H II regions

Details A very high resolution study of emission line widths in Galactic and extragalactic H II regions A very high resolution study of emission line widths in Galactic and extragalactic H II regions

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...198..283o&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 198, no. 1-2, June 1988, p. 283-286.

Astronomy and Astrophysics

Astrophysics

14

Emission Spectra, H Ii Regions, Radial Velocity, Spectral Line Width, Spectral Resolution, Astronomical Spectroscopy, Intergalactic Media, Line Spectra, Milky Way Galaxy

Scientific paper

Very high spectral resolution spectroscopy was performed using the 5007 Å [O III] line on two galactic H II regions (NGC 6611 and NGC 7000) and three giant extragalactic H II regions (NGC 588, NGC 604 and IC 133) in M33. Use of the thermally narrow [O III] line also aided in the determination of the broadening due to mass motion, although the results are in agreement with the average values obtained in earlier studies primiarily done with Hα. The authors confirm and find evidence for multiple velocity components in each of the extragalactic systems.

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