Multiwavelength observations of the field HS 47.5/22 in Ursa Major. I. The X-ray catalogue of a medium deep ROSAT survey

Details Multiwavelength observations of the field HS 47.5/22 in Ursa Major. I. The X-ray catalogue of a medium deep ROSAT survey Multiwavelength observations of the field HS 47.5/22 in Ursa Major. I. The X-ray catalogue of a medium deep ROSAT survey

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26as..126..509m&link_type=abstract

A & A Supplement series, Vol. 126, December II 1997, 509-517.

Astronomy and Astrophysics

Astronomy

8

Methods: Data Analysis, Catalogues, Surveys, X-Rays: General, X-Rays: Galaxies

Scientific paper

We present the X-ray source catalogue obtained from a ROSAT survey in the HQS field HS 47.5/22. The survey consists of 48 overlapping PSPC pointings which were first analysed individually, and then merged to increase the sensitivity. Both modes bring forth sources missed in the other, showing that both are necessary to detect all X-ray sources in the field. The final catalogue contains 574 X-ray sources. The identifications are mainly based on the HQS objective prism plate which allows object classification down to a magnitude m_b^{0.4 < -0.4ex} ~ 18.5', and a rough distinction between red and blue objects more than a magnitude deeper. Follow-up observations were performed for a number of objects, mainly faint quasar candidates. Partly based on observations from the German-Spanish Astronomical Center, Calar Alto, operated by the Max-Planck-Institut fur Astronomie, Heidelberg, jointly with the Spanish National Commission for Astronomy. Tables 4 to 6 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html. Figure 7 is published electronically and is made available at http://www.ed-phys.fr/Abstract.html

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