Computer Science – Databases
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..848..597t&link_type=abstract
RECENT ADVANCES IN ASTRONOMY AND ASTROPHYSICS: 7th International Conference of the Hellenic Astronomical Society. AIP Conferenc
Computer Science
Databases
Normal Galaxies, Extragalactic Objects And Systems, X-Ray, X-Ray Sources, X-Ray Bursts, Astronomical Catalogs, Atlases, Sky Surveys, Databases, Retrieval Systems, Archives, Etc.
Scientific paper
We cross-correlate Chandra sources from the XAssist catalogue with the SDSS and identify galaxies which are dominated by stellar processes (`normal' galaxies). We obtain a further sample of such galaxies by also cross-correlating sources from the XBootes survey with the SDSS. We calculate photometric redshifts for this sample and combine both samples with 3 earlier samples of X-ray selected `normal' galaxies to obtain the largest X-ray selected sample of such galaxies to date, consisting of 219 objects and spanning a range in X-ray flux fX (0.5 - 2.0 keV) ~ 10-13 - 10-16 erg cm -2 s-1. We calculate the total sensitivity curve and number counts (`logN - logS') of `normal' galaxies for our combined sample and compare our results with predictions from earlier work.
Akylas Athanassios
Georgakakis Antonis
Georgantopoulos Ioannis
Koulouridis Elias
Plionis Manolis
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