Polarization Measurements of Post-Asymptotic Giant Branch Candidates and Related Stars

dc.contributor.author	Parthasarathy, M
dc.contributor.author	Jain, S. K
dc.contributor.author	Sarkar, G
dc.date.accessioned	2008-09-09T11:00:07Z
dc.date.available	2008-09-09T11:00:07Z
dc.date.issued	2005-05
dc.identifier.citation	Astronomical Journal, Vol. 129, No 5, pp. 2451 - 2460	en
dc.identifier.issn	0004-6256
dc.identifier.uri	http://hdl.handle.net/2248/3505
dc.description.abstract	We have obtained UBVRI polarization measurements of 26 post-asymptotic giant branch (post-AGB) candidates and related stars. The extremely metal-poor post-AGB star HR 4049 has been observed several times. In most cases we find the objects to be intrinsically polarized. The polarization measurements presented in this paper indicate asymmetric circumstellar dust shells and disks around these stars. For some objects the steep percent polarization λ-dependence and large degree of polarization suggest that scattering by circumstellar dust grains may be responsible for the observed polarizations in the blue.	en
dc.language.iso	en	en
dc.publisher	The American Astronomical Society	en
dc.relation.uri	http://www.iop.org/EJ/abstract/1538-3881/129/5/2451/	en
dc.relation.uri	http://dx.doi.org/10.1086/429227	en
dc.subject	Stars: Circumstellar Matter	en
dc.subject	Infrared: Stars	en
dc.subject	Polarization	en
dc.subject	Stars: AGB and Post-AGB	en
dc.subject	Stars: Evolution	en
dc.title	Polarization Measurements of Post-Asymptotic Giant Branch Candidates and Related Stars	en
dc.type	Article	en