IUE spectroscopy of extragalactic H H regions

Details IUE spectroscopy of extragalactic H H regions IUE spectroscopy of extragalactic H H regions

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984nascp2349..111d&link_type=abstract

In NASA. Goddard Space Flight Center Future of Ultraviolet Astronomy Based on Six Years of IUE Res. p 111-114 (SEE N85-20961 1

Astronomy and Astrophysics

Astronomy

18

Emission Spectra, Extraterrestrial Radiation, Iue, Nebulae, Ultraviolet Astronomy, Carbon, Electron Density (Concentration), H Ii Regions, Least Squares Method, Line Spectra, Nitrogen, Signal To Noise Ratios, Silicon

Scientific paper

This report summarizes progress made in studying the UV spectra of several prominent extragalactic H II regions with the IUE during the last two years. High dispersion spectra have been obtained of N81 and N66A in the SMC, the 30 Doradus Nebula in the LMC, NGC 2363 in the SBm galaxy NGC 2366, NGC 5471 in M101, and NGC 604 in M33, that are superior in quality to low dispersion spectra in the statistical accuracy and resolution of the nebular emission lines of ions such as C III], Si III], N III], and O III]. These data are combined with ground-based spectroscopy to diagnose physical conditions and abundances in over twenty extragalactic H II regions derived from recent IUE low dispersion observations and/or archival spectra are also presented.

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