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Geometrical Constraints on the Hot Spot in Beta Lyrae
release_dcq4h5rn5rfyxnguefotbm5zvm
by
Jamie R. Lomax,
Jennifer L. Hoffman,
Nicholas M. Elias II,
Fabienne A.
Bastien,
Bruce D. Holenstein
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.
2012
Abstract
We present results from six years of recalibrated and new spectropolarimetric
data taken with the University of Wisconsin's Half-Wave Spectropolarimeter
(HPOL) and six years of new data taken with the photoelastic modulating
polarimeter (PEMP) at the Flower and Cook Observatory. Combining these data
with polarimetric data from the literature allows us to characterize the
intrinsic BVRI polarized light curves. A repeatable discrepancy of 0.245 days
(approximately 6 hours) between the secondary minima in the total light curve
and the polarization curve in the V band, with similar behavior in the other
bands, may represent the first direct evidence for an accretion hot spot on the
disk edge.
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1108.3015v2
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