Chandra Bulge Latitude Survey (BLS): Overview and Source Distributions

Details Chandra Bulge Latitude Survey (BLS): Overview and Source Distributions Chandra Bulge Latitude Survey (BLS): Overview and Source Distributions

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010head...11.4404g&link_type=abstract

American Astronomical Society, HEAD meeting #11, #44.04; Bulletin of the American Astronomical Society, Vol. 41, p.735

Astronomy and Astrophysics

Astronomy

Scientific paper

The Chandra Bulge Latitude Survey (BLS) is mosaic of some 36 Chandra pointings with ACIS-I covering approximately 3 degrees in latitude and 1 degree in longitude and centered on the Galactic Center. We proposed this (Chandra Cycle 7) to complement the Chandra survey of the Galactic Center Region conducted by Wang et al (2002) which surveyed a similar region but aligned in longitude along the galactic plane. The combination of these two surveys would then give the complete latitude vs. longitude distributions of the sources in the central Bulge of the Galaxy. We have completed the survey and present here the full mosaic image of the BLS to study the latitude distribution, in particular, of the Bulge sources. With integration times of 15ksec per ACIS-I field, and with the full Chandra band used, the BLS reaches fainter limiting fluxes than the Wang Survey. In combination with wide-field optical (CTIO-mosaic) imaging and followup Hydra spectroscopy(see poster by Zhao et al) and IR imaging (CTIO-ISPI) in JHK (see poster by van den Berg et al), we have mapped the source distribution and content. In this talk we present the global results and comparisons with source populations in the central Bulge.

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