The multifrequency spectrum of the starburst galaxy NGC 2782.
Abstract
The nuclear region of NGC 2782 has been observed at radio, millimeter, infrared, optical, ultraviolet, and X-ray frequencies to understand the ionization source that gives rise to the narrow emission lines. The continuum is probably caused by a normal galactic population plus considerable numbers of young stars and warm dust. In the ultraviolet and optical spectra, which are powerful diagnostics, no strong lines are detected in the 1200 A-3200 A region aside from L-alpha, and the optical emission lines cover only a narrow ionization range. The line and continuum properties suggest that NGC 2782 is a starburst galaxy, in which young stars photoionize the surrounding gas.
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- June 1984
- DOI:
- 10.1086/131353
- Bibcode:
- 1984PASP...96..398K
- Keywords:
-
- Astronomical Spectroscopy;
- Emission Spectra;
- Galactic Nuclei;
- Spiral Galaxies;
- Starburst Galaxies;
- Continuous Spectra;
- Photoionization;
- Seyfert Galaxies;
- Stellar Evolution;
- Astrophysics