Radio recombination lines from NGC 253

Details Radio recombination lines from NGC 253 Radio recombination lines from NGC 253

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....82..272m&link_type=abstract

Astronomy and Astrophysics, vol. 82, no. 3, Feb. 1980, p. 272-274.

Astronomy and Astrophysics

Astronomy

7

Extragalactic Radio Sources, H Alpha Line, Hydrogen Recombinations, Radio Galaxies, Astronomical Models, Continuous Spectra, Galactic Nuclei, Galactic Radiation, Radio Astronomy, Spectrum Analysis

Scientific paper

Observations of the H 112alpha, H 90alpha, and H 85alpha lines in the direction of NGC 253 are reported. The H 112alpha line was detected with a peak flux of 12 m Jy, a central velocity of 204 km/s, and a width of 175 km/s; only upper limits were obtained for H 90alpha and H 85alpha. Together with other data, these results indicate that the recombination lines from NGC 253 are strongly enhanced through stimulation by the nonthermal nuclear continuum source.

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