Correlated photometric and polarimetric phenomena in AM Herculis

Autor:	W. Krzeminski, S. Tapia, W. C. Priedhorsky
Rok vydání:	1978
Předmět:	Photometry (optics) Physics AM Herculis Space and Planetary Science Binary star Polarimetry Astronomy Astronomy and Astrophysics Astrophysics Spectral bands Polarization (waves) Light curve Circular polarization
Zdroj:	The Astrophysical Journal. 225:542
ISSN:	1538-4357 0004-637X
DOI:	10.1086/156514
Popis:	Via 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9186fb5f58adf0c10aef73e2733f1622 https://doi.org/10.1086/156514 Zobrazit plný text záznamu