Morphology of the ionized gas in the spiral galaxy NGC 6946

Details Morphology of the ionized gas in the spiral galaxy NGC 6946 Morphology of the ionized gas in the spiral galaxy NGC 6946

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26as...66..149b&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 66, no. 2, Nov. 1986, p. 149-159, 169, 170.

Astronomy and Astrophysics

Astrophysics

45

Astronomical Catalogs, Interstellar Gas, Ionized Gases, Spatial Distribution, Spiral Galaxies, Astronomical Spectroscopy, Brightness Distribution, Data Reduction, H Alpha Line, H Ii Regions

Scientific paper

A catalog of 643 H II regions in the spiral galaxy NGC 6946 has been compiled from the analysis of an H-alpha plate taken with a focal reducer at the prime focus of the Soviet 6-m telescope. The distribution of their diameters is well represented by an exponential function with a characteristic diameter D0 = 29 pc (assuming a distance of 5.1 Mpc for the galaxy). The study of their brightness shows a luminosity function quite comparable to that found for other Sc galaxies, such as NGC 628 (Kennicutt and Hodge, 1980), NGC 5236 (Rumstay and Kaufman, 1983), or M33 (Viallefond et al., 1985).

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