Bibcode
Zhao, P.; Grindlay, J. E.; Edmonds, P.; Garcia, M. R.; McClintock, J. E.; Cohn, H.; Lugger, P.; Slavin, S.
Bibliographical reference
American Astronomical Society, 198th AAS Meeting, #54.12; Bulletin of the American Astronomical Society, Vol. 33, p.866
Advertised on:
5
2001
Citations
0
Refereed citations
0
Description
The Chandra Multiwavelength Plane (ChaMPlane) Survey is a project to
identify a large sample of serendipitous X-ray sources in the galactic
plane (|b| < ~ 10o), including cataclysmic variables,
quiescent low mass X-ray binaries (qLMXBs: including both black hole and
neutron star systems), Be X-ray binaries and stellar coronal sources
(see Grindlay et al 2000, BAAS, 196, 37.07 for general description).
ChaMPlane has been chosen by NOAO as a Long Term Survey Program. Deep (R
~ 24) NOAO 4m Mosaic images are obtained to identify CVs and qLMXBs by
their ubiquitous Hα excess as ``blue'' objects in the R vs.
(Hα -R) diagram. We have successfully conducted the ChaMPlane
survey for the first year and obtained: deep images in the V, R, I and
Hα bands for 13 Chandra fields (9 from CTIO and 4 from KPNO);
corresponding serendipitous X-ray source fluxes and colors from 4 of
these fields; and optical WIYN/Hydra multi-fiber spectra for a
substantial sample of the X-ray sources and detected Hα -excess
sources in two Chandra fields (J0422+32 and A0620-00). We will present
our data analysis methods and complete photometry, spectroscopy and
X-ray results for the field including GRO J0422+32. The first CV in the
ChaMPlane survey has been detected with Mosaic imaging and confirmed
with WIYN/Hydra spectroscopy. Several additional possible CV candidates
are detected with imaging and spectra. However, these faint (R >= 22)
Hα -excess objects will probably require slit spectroscopy and/or
a larger telescope for definitive classification.