Bringing in the Last SHEEP

Details Bringing in the Last SHEEP Bringing in the Last SHEEP

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cxo..prop.1752n&link_type=abstract

Chandra Proposal ID #06700612

Computer Science

Chandra Proposal Id #06700612

Scientific paper

The SHEEP 5-10 keV survey with ASCA tries to answer questions about the nature of the objects making the X-ray background, by selecting hard sources that are nonetheless bright enough for detailed followup. We have obtained Chandra snapshot observations of 35/69 SHEEP in AO3 to give accurate positions, and optical identifications at the NOAO 4m telescopes. The results are fascinating, revealing e.g. a total lack of correspondence between optical and X-ray obscuration measures, and interesting populations such as narrow line AGN in massive E/S0 galaxies. There are 11 objects remaining, which despite ROSAT positions, have ambiguous optical IDs. Chandra snapshots for these, and NOAO time to classify them and the remaining objects in the sample without spectra, will complete our survey.

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