A study of HII regions in spiral galaxies using multiobject spectroscopy

Details A study of HII regions in spiral galaxies using multiobject spectroscopy A study of HII regions in spiral galaxies using multiobject spectroscopy

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nascp3084..169z&link_type=abstract

In NASA, Ames Research Center, The Interstellar Medium in External Galaxies: Summaries of Contributed Papers p 169-171 (SEE N91-

Physics

H Ii Regions, Spectroscopy, Spiral Galaxies, Excitation, Gradients, Metallicity, Populations

Scientific paper

Multiobject spectroscopy results of HII regions in nearby late-type spiral galaxies are given. Results include excitation measurements, log ((O III)/H beta), for 81 regions in M 101, 30 regions in NGC 2403, and 13 regions in M 51. Researchers conclude that late-type spirals can be classified into two distinct populations, examine possible causes of this division, and derive metallicity gradients for these galaxies. M 51 appears to have an anomalously shallow abundance gradient.

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