Keywords
Astrophysics
How to Cite
ROSAT X-Ray Observations of Central Galactic Starbursts. (2000). Revista Mexicana De Astrofísica Y Astronomía Serie De Conferencias, 9, 51-54. https://doi.org/10.22201/ia.14052059p.2000.9.09
Abstract
We present spatial and spectral results of ROSAT observations of two galaxies: NGC 4569 and NGC 4303. Both objects are members of the Virgo Cluster and have nearby smaller companions with which they have probably gone through an encounter. Both soft X-ray spectra (0.1-2.4 keV) can be fitted with a two-component model consisting of a power-law component from a non-thermal emission of a compact active nucleus and a Raymond-Smith model for a hot thin thermal plasma originating from starbursts. The X-ray luminosities are in the range of 1040 erg s-1. The central source of NGC 4569 is very compact and can not be resolved with the ROSAT HRI detector, while there is extended soft X-ray emission in the galactic disk as well as above it. NGC 4303 is dominated by the active nucleus in the X-ray. But several additional disk sources associated with H II regions can be observed.Similar Articles
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