Ring structure in the HII region of NGC 5930

Details Ring structure in the HII region of NGC 5930 Ring structure in the HII region of NGC 5930

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acasn..33....5s&link_type=abstract

Acta Astronomica Sinica (ISSN 0001-5245), vol. 33, no. 1, March 1992, p. 5-13. In Chinese.

Astronomy and Astrophysics

Astronomy

Galactic Structure, H Ii Regions, Rings, Spiral Galaxies, Balmer Series, Infrared Radiation, Radio Emission, Very Large Array (Vla)

Scientific paper

Radio continuous observations of the barred spiral galaxy NGC5930 at 2- and 3.6-cm wavelengths have been carried out with the VLA. It has been found that at 2 cm the HII region appears to be a ring structure on which hot spots are distributed. The outer angular diameter of the ring is 2.2 arcsec, and the inner angular diameter - 0.3 arcsec. The center is a hole from which no radio emission has been detected. The electron density in the HII region is 80 - 90 cu cm, and its mass is 10 exp 7 solar mass units. In NGC 5930 there is very strong infrared radiation. The infrared luminosity is 10 exp 6 times larger than the radio luminosity. There is a steep Balmer attenuation. This is a region where a star is being formed violently.

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