Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21714409h&link_type=abstract
American Astronomical Society, AAS Meeting #217, #144.09; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
To support our current observing program to monitor High Mass X-ray Binary (HMXB) systems for optical variability, we calibrated a large sample of comparison stars in the fields of ten HMXB systems. This was done using the new BYU West Mountain 0.9-m telescope. Calibrations were done in the B, V, and I filter with Landolt standard fields. Two of our systems, 4U 1907+09 and KS 1947+300, had previously published magnitudes for the optical counterpart of each x-ray system. The eight remaining systems had no identified optical counterparts. These systems include: AXJ1844.8-0258, 4U 1850-03, 4U 1901+03, 4U 1908+075, XTE J1906+090, XTE J1908+094, IGR J19140+0951, and IGR 18410-0535. We will report on the calibrations for each field and an attempt to identify each optical counterpart. This work is supported by NSF grants AST-0618209. We also acknowledge support from a BYU ORCA MEG grant.
Hintz Eric G.
Joner Michael D.
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