Astron. Astrophys. 332, 825-841 (1998)

Appendix A: findings charts and "identification" with Palomar survey

In order to ease the identification work we have produced for most of the X-ray sources in our list finding charts based on the STScI Digitized Sky Survey CD-ROMs. These findings charts are shown in Fig. A1 for all HRI sources, while in Fig. A2 we show the finding charts for the 17 PSPC sources in our list whose 90% confidence positional error circles have a radius smaller than 90". For the other 7 PSPC sources without an HRI counterpart and falling in the outer part of the field of view the radius of the error circle is larger and likely prevents any sensible optical identification program.

Fig. A1. Finding charts for the 17 HRI sources detected in the Upper Sco-Cen Association region, extracted from the STScI DSS, with overlaid the 90% confidence positional error circle. Each chart is 2' on a side. An asterisk on the upper right corner indicates those sources for which no catalog identification has been found.

Fig. A2. Finding charts for the 17 PSPC sources detected in the Upper Sco-Cen Association region extracted from the ST ScI DSS, with overlaid the 90% confidence positional error circle. Each chart is 3' on a side. Only those sources with an error circle smaller than 90" in radius are shown. An asterisk on the upper right corner indicates those sources for which no catalog identification has been found.

© European Southern Observatory (ESO) 1998

Online publication: March 30, 1998
helpdesk@link.springer.de