Polarimetric study of the RV Tauri star AC Herculis

Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/959

Title:	Polarimetric study of the RV Tauri star AC Herculis
Authors:	Raveendran, A. V Kameswara Rao, N Anandaram, M. N
Keywords:	RV Tauri Star-circumstellar Dust-intrinsic Polarization-interstellar polarization
Issue Date:	Sep-1989
Publisher:	Astronomical Society of Indian
Citation:	BASI, Vol. 17, No. 3, pp. 95-101
Abstract:	BVRI polarimetry of AC Her shows that the wavelength dependence of polarization is weak with a marginal increase towards blue and that the position angle is nearly independent of wavelength. It is argued that the interstellar component of polarization in the direction of AC Her is negligile (less than 0.1 percent). The polarization observed in AC Her most probably results from a combination of pulsation related asymmetry in the star and circumstellar grain scattering; and its variation during a light cycle is not caused by changes in the circumstellar dust envelope but rather by the changes in asymmetry in the star
URI:	http://hdl.handle.net/2248/959
Appears in Collections:	BASI Publications

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