ROSAT X ray observation of the 30 DOR giant HII region

Astronomy and Astrophysics – Astronomy

Scientific paper

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Infrared Sources (Astronomy), Rosat Mission, Starburst Galaxies, Galactic Nuclei, Infrared Astronomy Satellite, Seyfert Galaxies, Stellar Activity, X Ray Astronomy

Scientific paper

A well defined sample of IRAS (Infrared Astronomy Satellite) galaxies were studied from the Rosat All Sky Survey data. Among the detections are Seyfert 2, LINER, and Starburst galaxies with X-ray luminosities more than an order of magnitude higher than observed before. The All Sky Survey carried out with the Rosat satellite offers an opportunity to examine the X-ray characteristics of particular classes of object. A comparison of the infrared and X-ray properties of galaxies is of interest regarding the relative importance of star formation processes and central active nuclei. A statistical investigation of the X-ray emission for IRAS galaxies is reported. Subsequent optical spectroscopy of the most luminous cases reveals that outstanding objects in various categories were detected.

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