Optical Followup of Selected High Latitude Chandra Fields

Details Optical Followup of Selected High Latitude Chandra Fields Optical Followup of Selected High Latitude Chandra Fields

Aug 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000noao.prop...29g&link_type=abstract

NOAO Proposal ID #2000B-0029

Astronomy and Astrophysics

Astronomy

Scientific paper

The recently launched Chandra X-ray observatory now has demonstrated its ability to detect, over large areas of the sky, X-ray sources 10-20 times fainter and with 10 times higher angular resolution than could be achieved by any earlier X-ray satellite. We propose here to obtain complementary deep optical images of selected Chandra fields to assure that a large, statistically complete sample of serendipitous X-ray sources can be selected on uniform optical/X-ray color criteria. The large PSFs of previous X-ray missions severely hampered construction of such samples because of large numbers of candidate optical counterparts, and since the X-ray confusion limit was reached at much brighter fluxes. Chandra's ~arcsecond astrometry enables unambiguous identification of optical counterparts, so that our Chandra Multiwavelength Project (ChaMP) promises rapid advances in our understanding of the nature and evolution of quasars, clusters of galaxies, and the cosmic X-ray background. We also propose for followup spectroscopy with currently available instruments on a brighter subset of selected ChaMP fields. The ChaMP survey products will be made publicly available, thus enabling a wide range of follow-up projects, and helping to reorient science drivers and subsequently targets for Chandra, XMM and future missions.

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