Eclipse Spectropolarimetry of the epsilon Aurigae System
Kathleen M. Geise
Robert E. Stencel
University of Denver, Department of Physics and Astronomy, 2112 E. Wesley Avenue, Denver, CO 80208
Canada-France-Hawaii Telescope Corporation (CFHT), Waimea Headquarters, 65-1238 Mamalahoa Highway, Kamuela, HI 96743
Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822
Received April 13, 2012; revised August 27, 2012, October 17, 2012; accepted November 4, 2012
The recent eclipse of the enigmatic binary star system, epsilon Aurigae, offered a special opportunity to explore the role of spectropolarimetry in discovery of unknown facets of the objects involved. Here we present spectropolarimetric results for H-alpha, H-beta, Ca I (422.6 nm), and K I (769.9 nm) based on more than 50 epochs of high dispersion spectra obtained with the ESPaDOnS instrument at CFHT during 2006–2012.