HPOL ---- Once again HPOL split time between WIYN and PBO this past year, spending 3 months at Kitt Peak, and the rest at Pine Bluff. During it's WIYN run HPOL obtained data on 9 nights, recording data in both the standard mode and a new faint mode configuration. In all HPOL obtained 210 observations of 89 distinct targets over the course of 95 nights between Oct 1 1996 and Sept 24 1997. Although HPOL observes a wide range of objects, two specific campaigns were attempted. 16 faint mode observations of Comet Hale-Bopp were made in early 1997, while 15 observations of the interacting binary Bet Lyr were made during the months of July and August 1997. Broadband polarimetric results of HPOL observations continue to be listed on the HPOL website (http://www.sal.wisc.edu/HPOL) WUPPE ----- WUPPE data from the Astro-2 mission continue to be reduced with the final instrument calibrations. Fox has been analyzing the data collected by WUPPE, PBO and McDonald observatory of AO Cas in collaboration with K. Nordsieck, R. Pifer, and D. Hines (U of Arizona). Also in collaboration with Hines, Fox is analyzing observations of HD108 from McDonald observatory. Fox also has been investigating the polarization of the Moon from data obtained by WUPPE. Johnson has been studying WUPPE and WIYN observations of the post-AGB star HR 4049. She concludes that this prototype of the high-galactic latitude supergiant post-AGB stars showed time-variable polarization that appeared to be arising from rayleigh scattering in a geometrically thin disk. In addition, the WUPPE polarimetry clearly showed the signature of bipolar structure. Our models showed that the disk is optically thin and our viewing angle of the disk changes over the orbital period. The optical depth of the disk varied with the colors of the star as well, lending support to the theory that the photometric and color changes of HR 4049 are caused by an orbiting cloud of dust and gas. Refereed Papers: Anderson, C.M., Weitenbeck, A.J., Code, A.D., Nordsieck, K.H., Meade, M.R., Babler, B.L., Zellner, N.E.B., Bjorkman, K.S., Fox, G.K., Johnson, J.J., Sanders, W.T., Lupie, O.L., and Edgar, R.J., "Ultraviolet Interstellar Polarization of Galactic Starlight I. Observations by the Wisconsin Ultraviolet Photo-Polarimeter Experiment" 1996, A.J. 112, 2726. Clayton, G.C., Bjorkman, K.S., Nordsieck, K.H., Zellner, N.E.B., Schulte-Ladbeck, R.E., "Evidence for a Bipolar Geometry in R Coronae Borealis?", 1997, Ap.J., 476, 870. Clayton, G.C., Wolff, M.J., Allen, R.G., Babler, B.L., Meade, M.R., Nordsieck, K.H., Anderson, C.M., Martin, P.G., and Whittet, D.C.B., "Ultraviolet Interstellar Linear Polarization. IV. Cross-Calibration Between the Wisconsin Ultraviolet Photo-Polarimeter Experiment and the Faint Object Spectrograph", 1997, A. J., 114, 1132. Fox, G.K., Code, A.D., Anderson, C.M., Babler, B.L., Bjorkman, K.S., Edgar, R.J., Johnson, J.J., Lupie, O.L., Meade, M.R., Sanders, W.T., Weitenbeck, A.J., Zellner, N.E.B., "Solar System Observations by the Wisconsin Ultraviolet Photo Polarimeter Experiment. I. The First Ultraviolet Linear Spectropolarimetry of Mars", 1997, A.J., 113, 1152. Fox, G.K., Code, A.D., Anderson, C.M., Babler, B.L., Bjorkman, K.S., Edgar, R.J., Johnson, J.J., Lupie, O.L., Meade, M.R., Sanders, W.T., Weitenbeck, A.J., Zellner, N.E.B., "Solar System Observations by the Wisconsin Ultraviolet Photo Polarimeter Experiment. II. The First Linear Ultraviolet Spectropolarimetry of Io", 1997, A.J., 113, 1158. Fox, G.K., "Spectropolarimetry of Mars: The Development of Two Polarization Reversals", 1997, MNRAS, 286, 963. Johnson, J.J., Anderson, C.M., Bjorkman, K.S., Code, A.D., Fox, G.K., Weitenbeck, A.J., Sanders, W.T., Babler, B.L., Meade, M.R., Zellner, N.E.B., Edgar, R.J., Magalhaes, A.M., Clayton, G.C., Schulte-Ladbeck, R.E., and Lupie, O.L., "Ultraviolet Spectropolarimetry of Three Classical Novae Early in Outburst: Evidence for Aspherical Shells", 1997, A. J. 113, 2200. Quirrenbach, A., Bjorkman, K.S., Bjorkman, J.E., Hummel, C.A., Buscher, D.F., Armstrong, J.T., Mozurkewich, D., Elias II, N.M., and Babler, B.L., "Constraints on the Geometry of Circumstellar Envelopes: Optical Interferometric and Spectropolarimetric Observations of Seven Be Stars", 1997, Ap. J., 479, 477. Raymond, J.C., Blair, W.P., Long, K.S., Vancura, O., Edgar, R.J., Morse, J., Hartigan, P., and Sanders, W.T., "The Ultraviolet Spectrum of a Face-On Shock Wave in the Vela Supernova Remnant" 1997, Ap. J., 482, 881. Tran, H.D, Filippenko, A.V., Schmidt, G.D., Bjorkman, K.S., Jannuzi, B.T., and Smith, P.S., "Probing the Geometry and Circumstellar Environment of SN1993J in M81", 1997, PASP, 109, 489. Weitenbeck, A.J., "Cross Identifications in the Region of NGC1502", 1997, A.J., 114, 222. Wolff, M.J., Clayton, G.C., Kim, S-H., Martin, P.G. and Anderson, C.M., "Ultraviolet Interstellar Linear Polarization III. Features", 1997, Ap.J., 478, 395. Wood, K., Bjorkman, K.S., and Bjorkman, J.E., "Deriving the Geometry of Be Star Circumstellar Envelopes from Continuum Spectropolarimetry I. The Case of Zeta Tauri", 1997, Ap. J., 477, 926. Papers Submitted: Clarke, D. and Bjorkman, K.S., "On the polarization of Phi Per", 1997, A & A, submitted. Fox, G.K., Code, A.D., Anderson, C.M., Babler, B.L., Bjorkman, K.S., Johnson, J.J., Meade, M.R., Nordsieck, K.H., Weitenbeck, A.J., and Zellner, N.E.B., "The First Ultraviolet Linear Spectropolarimetry of the Moon", 1997, MNRAS, submitted. Hoffman, J., Nordsieck, K.H., and Fox, G.K., "Spectropolarimetric Evidence for a Bipolar Flow in Beta Lyrae", 1997, A.J., submitted Conference Proceedings: Conference: "Luminous Blue Variables: Massive Stars in Transition" Hawaii 6-11 Oct 1996, eds. A. Nota & H.J.G.L.M. Lamers. Schulte-Ladbeck, R.E., Schmid, H.M., Meade, M.R., Harries, T.J., Lupie, O.L. and Bjorkman, K.S., 1997, "Six years of spectroscopic and spectropolarimetric monitoring of AG Car" Schulte-Ladbeck, R.E., Hillier, D.J., Clampin, M., Pasquali, A., Lupie, O.L., Nota, A., The WUPPE Science Team, 1997, "The Structure of Eta Carinae's Homunculus Nebula from Imaging Polarimetry and Spectropolarimetry" Abstract: Wolff, M.J., Clayton, G.C., Allen, R.G., Babler, B.L., Meade, M.R., Nordsieck, K.H., Anderson, C.M., Martin, P.G., Whittet, D.C.B., "Ultraviolet Interstellar Polarization. IV. Cross-Calibration Between the Wisconsin Ultraviolet Photo-Polarimeter Experiment and the Faint Object Spectrograph", 1997, Bull.A.A.S., 29, 790.