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Title:
X-ray emission from the Sculptor galaxy NGC 300
Authors:
Read, A. M.; Pietsch, W.
Affiliation:
AA(Max-Planck-Institut für extraterrestrische Physik, Gießenbachstraße, 85748 Garching, Germany), AB(Max-Planck-Institut für extraterrestrische Physik, Gießenbachstraße, 85748 Garching, Germany)
Publication:
Astronomy and Astrophysics, v.373, p.473-484 (2001) (A&A Homepage)
Publication Date:
07/2001
Origin:
A&A
A&A Keywords:
GALAXIES: CLUSTERS: SCULPTOR, GALAXIES: INDIVIDUAL: NGC 300, GALAXIES: ISM, GALAXIES: SPIRAL, X-RAYS: GALAXIES
DOI:
10.1051/0004-6361:20010636
Bibliographic Code:
2001A&A...373..473R

Abstract

We report here the results of a full analysis of all the ROSAT PSPC spectral imaging observations and all the ROSAT HRI high resolution imaging observations of the very nearby (D=2.1 Mpc) Sculptor galaxy, NGC 300. Many point sources are detected within the field, several of them showing evidence for variability, and we present full source lists detailing their X-ray properties, and attempt to classify them on the basis of their temporal, spectral and multi-wavelength characteristics. A black hole X-ray binary candidate, a supersoft source and several supernova remnants and H ii regions are detected in X-rays, as is unresolved, possibly diffuse emission, accounting for perhaps ~ 20% of the total NGC 300 X-ray (0.1-2.4 keV) luminosity (5.8*E38 erg s-1). We compare the X-ray source luminosity distribution of NGC 300 with that of other nearby galaxies, and we also compare NGC 300 with its Sculptor neighbours, concluding that it is a quite an unremarkable system, showing no unusual X-ray (or other multi-wavelength) properties. It may be one of the best examples of a completely typical normal quiescent late-type spiral galaxy.
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