Optical surveys of H II regions in galaxies

Details Optical surveys of H II regions in galaxies Optical surveys of H II regions in galaxies

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982aj.....87.1341h&link_type=abstract

Astronomical Journal, vol. 87, Oct. 1982, p. 1341-1354.

Astronomy and Astrophysics

Astronomy

18

Astronomical Photography, Galaxies, H Ii Regions, Andromeda Galaxy, Histories, Hydrogen Ions, Magellanic Clouds, Star Clusters, Tables (Data)

Scientific paper

Optical surveys of individual galaxies now include many hundreds of H II regions per galaxy. The present investigation is concerned with a review of the present status of the field. Early optical surveys are considered, taking into account studies conducted by Hubble, investigations of the Magellanic Clouds, a catalog of H II regions in M31, and a survey of M101. Surveys carried out in recent years using more refined techniques have resulted in present knowledge of significant numbers of H II regions in over 150 galaxies. The characteristics of some large-scale surveys of H II regions which include many galaxies studied by uniform techniques are discussed. It is pointed out that optical searches for H II regions in galaxies have been almost overwhelmingly successful. A total of 233 searched galaxies for which 16,293 H II regions have been mapped is presented in a table.

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