An investigation into the properties of a subgroup of southern galaxies detected by the IRAS survey.
Abstract
The results of spectroscopic observations of 42 IRAS sources, all detected at 25, 60 and 100{microns}, and with a spectral index mainly in the range -1.75<α(60,25)<-1.5, are presented. Six Seyfert 2 galaxies and several isolated extragalactic H II regions (IEHRs) are identified. The most interesting objects described in this work are the bright nearby Seyfert galaxies NGC 1125 and 5995, the ESO 513-IG11 system (in which five condensations can be distinguished, each one being a giant H II region) and ESO 45-G15, a starburst galaxy with strong Wolf-Rayet emission features. The luminosity and structure of some of the brighter objects were investigated by means of UBV(RI)_c_ photometry and CCD observations. The infrared properties of the galaxies are discussed.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- October 1988
- DOI:
- 10.1093/mnras/234.3.703
- Bibcode:
- 1988MNRAS.234..703W
- Keywords:
-
- H Ii Regions;
- Infrared Astronomy Satellite;
- Seyfert Galaxies;
- Starburst Galaxies;
- Astronomical Photometry;
- Charge Coupled Devices;
- Stellar Luminosity;
- Ubv Spectra;
- Wolf-Rayet Stars;
- Astronomy