WET Announcements

• XCOV 25 , held in May 2006, was the first WET run sponsored by the Delaware Asteroseismic Research Center and Mt.Cuba Observatory. To view the results of this run, go to XCOV 25 Website. The results are now published. Check out our publications list below.

• The results from the 2008 campaign on G29-38 are now published. Gemini obtained time-resolved spectroscopy, and ground based telescopes obtained extensive optical observations. The data show some interesting results concerning the distribution of calcium on the surface of G29-38. Check out the publication listed below.

• XCOV27 is now under analysis. Information on the data set, including light curves and FTs, is given at XCOV27. Check out the XCOV27 Google Group for pictures from participating observatories.

• The November 2007 campaign remains under analysis. We obtained over 225 hours of data. This campaign began as an investigation of G38-29 as a possible target for light curve fitting, and grew into nearly a full fledged WET run. Here in Delaware, we jokingly call it XCOV25.5. To see the observations, go to November 2007 G38-29 Website. We seem to be dealing with amplitude modulation in this star. We've found that this is quite common (R808, G38-29, WDJ1524-0030, WD1654),and we've taken to calling these stars "soft and squishy". Anyone with ideas of how to handle this, please let us know:)

• We are always looking for interesting targets. There is no formal application process. If you have an interesting target that you think needs WET, please send the info (the target name and a couple of paragraphs concerning the scientific goals) to Dr.Judi Provencal or anyone on the advisory board, or go to Target Proposal.

• Analysis of EC14012-1446 is proceeding. We are finding several interesting results. While EC14012 was stable during the run, its pulsation spectrum is much different from previous observations. It seems that the visible peaks can not be m=0, and fit much better with m=+/- 1. This could do much to explain our difficulties in solidifying the l identifications for this star. To see the data, visit XCOV26

Recent WET Publications

• Provencal, J. et al."Whole Earth Telescope Observations of EC14012-1446

• Thompson, S. et al. "Pulsational Mapping of Calcium across the Surface of a White Dwarf" ApJ, 714, 296

• Provencal, J.L. et al. "Preliminary XCOV27 Results for EC14012-1446" Journal of Physics, Conf Series 172, 012061

• Provencal, J.L. et al. "2006 Whole Earth Telescope Observations of GD358: A New Look at the Prototype DBV"ApJ, 693, 564

• Sullivan, D. J. et al. "Whole Earth Telescope Observations of the Hot Helium Atmosphere Pulsating White Dwarf EC20058-5234" MNRAS, 387, 137

• Silvotti, R. et al. "A giant planet orbiting the `extreme horizontal branch' star V391 Pegasi", Nature, 449, Issue 1759, 189

• Vuckovic, M. et al. "Whole Earth Telescope Observations of the Pulsating Subdwarf B Star PG 0014+067", ApJ, 646, 1230

• N. Dolez, et al. (the WET collaboration), "Whole Earth telescope observations of the ZZ Ceti star HL Tau 76", Astronomy & Astrophysics, 446, 237 (2006).

• D. W. Kurtz et al. (the WET collaboration), "Pushing the ground-based limit: 14-umag photometric precision with the definitive Whole Earth Telescope asteroseismic data set for the rapidly oscillating Ap star HR1217", Monthly Notices of the Royal Astronomical Society, 358, 651 (2005).

   

• Wood, M.A. et al. (the WET collaboration), "DQ Herculis in Profile: Whole Earth Telescope observations and smoothed particle hydronamics simulations of an edge-on cataclysmic variable system", Astrophysical Journal, 634, 570 (2005).

   

• A. Kanaan, A. Nitta et al. (the WET collaboration), Whole Earth Telescope observations of BPM 37093: A seismological test of crystallization theory in white dwarfs", Astronomy & Astrophysics, 432, 219 (2005).

   

• S. D. Kawaler, E. M. Potter, M. Vuckovic et al. (the WET collaboration), "Whole Earth Telescope observations of the pulsating hot white dwarf PG 1707+427", Astronomy & Astrophysics, 428, 969 (2004).

   

• Castanheira, B. G., Kepler, S. O., Moskalik, P. et. al. (the WET collaboration), i "Observations of the Pulsating White Dwarf G 185-32", Astronomy and Astrophysics, 413, 623 (2004)

   

• M.D. Reed, S.D. Kawaler, et al. (the WET collaboration), "The long term pulsational stability of the pulsating sdB star Feige 48", Monthly Notices of the Royal Astronomical Society, 348, 1164. (2004).

   

• D. Kilkenny, M.D. Reed, D. O'Donoghue, S.D. Kawaler et al. (the WET collaboration), "A Whole Earth Telescope campaign on the pulsating subdwarf B binary system PG 1336-018 (NY Vir)", Monthly Notices of the Royal Astronomical Society, 345, 834 (2003).