Mathematics – Logic
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.5606g&link_type=abstract
American Astronomical Society, 197th AAS Meeting, #56.06; Bulletin of the American Astronomical Society, Vol. 32, p.1497
Mathematics
Logic
1
Scientific paper
The Groth-Westphal Strip is a region where 28 contiguous images were taken through V and I filters with WFPC2 on HST and these data formed the backbone of the HST Medium Deep Survey, so galaxy morphological information is available to V = 24. This region also overlaps the Canada-France-Hawaii-Redshift Survey and other ground-based imaging and spectroscopic programs. Exposures have been taken of this field with XMM-Newton for a useful total integration time of 100 ks. We present the X-ray spectra of faint sources identified with AGN of Types I and II, LINERs, starburst and normal galaxies. Individual and summed X-ray spectra are presented for these classes of X-ray emitter. For the faintest sources, X-ray hardness ratios are used in order to separate the contributions of these galaxies to the X-ray Background in broad energy bands: 0.5-2 keV, 2-5 keV and 5-10 keV. The changing composition of the XRB is demonstrated as we go from the lowest to the highest energy band.
Griffiths Richard E.
Miyaji Takamitsu
Ptak Andrew
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