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Correlated photometric and polarimetric phenomena in AM HerculisVia simultaneous multicolor photometry and polarimetry of AM Herculis, we find correlations among polarization, flux, and color in the V and I bands in periodic and nonperiodic (i.e., flickering) activity. The primary minimum observed in both bands is accompanied by a blueward shift of the (B - R) color and a decrease in the absolute value of the percent circular polarization in the V band. Outside primary minimum, peaks of flickering activity tend to be associated with an increase in the absolute value of the circular polarization and the concurrent reddening of the (B - R) and (R - I) colors. The visual light curve of AM Her can be explained by a flickering, circularly polarized light source which is obscured at primary minimum, and is redder than the total system color in the URVRI bands.
Document ID
19790026706
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Priedhorsky, W. C.
(California Institute of Technology Pasadena, Calif., United States)
Krzeminski, W.
(Polska Akademia Nauk Centrum Astronomiczne, Warsaw, Poland)
Tapia, S.
(Arizona, University Tucson, Ariz., United States)
Date Acquired
August 9, 2013
Publication Date
October 15, 1978
Publication Information
Publication: Astrophysical Journal
Subject Category
Astrophysics
Accession Number
79A10719
Funding Number(s)
CONTRACT_GRANT: NSF AST-75-01398-A01
CONTRACT_GRANT: NSF AST-76-07685
CONTRACT_GRANT: NGL-05-002-207
Distribution Limits
Public
Copyright
Other

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