A Simple Hot-Water Drill for Penetrating Ice Shelves, (9999)
A simple hot-water ice drill capable of making holes 20 cm in diameter through ice at least 50 meters thick was designed at DREP and tested on the Ellesmere Island ice shelves. The drill is built...
VLT Spectropolarimetry of the fast expanding Type Ia SN2006X (2009)
Patat, F., Baade, D., Hoeflich, P., Maund, J. R., Wang, L., Wheeler, J. C.
Using VLT-FORS1 we performed optical spectropolarimetric observations of the Type Ia SN2006X on 7 pre-maximum epochs (day -10 to day -1) and one post-maximum epoch (+39 days). The SN shows strong...
The Early Asymmetries of Supernova 2008D / XRF 080109 (2009)
Maund, J. R., Wheeler, J. C., Baade, D., Patat, F., Hoflich, P. A., Wang, L., ...
Spectropolarimetry of the Type Ib SN 2008D, associated with the XRF 080109, at two separate epochs, are presented. The epochs of these observations correspond to V-band light curve maximum and 15...
Stefl, S., Rivinius, Th., Carciofi, A. C., LeBouquin, J. B., Baade, D., Bjorkman, K. S., ...
Emission lines formed in decretion disks of Be stars often undergo long-term cyclic variations, especially in the violet-to-red (V/R) ratio of their primary components. From observations of the...
Carciofi, A. C., Okazaki, A. T., Bouquin, J-B. Le, Štefl, S., Rivinius, Th., Baade, D., ...
Aims. In this paper we model, in a self-consistent way, polarimetric, photometric, spectrophotometric and interferometric observations of the classical Be star $\zeta$ Tauri. Our primary goal is to...
A Spectroscopic Orbit for Regulus (2008)
Gies, D. R., Dieterich, S., Richardson, N. D., Riedel, A. R., Team, B. L., McAlister, H. A., ...
We present a radial velocity study of the rapidly rotating B-star Regulus that indicates the star is a single-lined spectroscopic binary. The orbital period (40.11 d) and probable semimajor axis...
The most rapidly rotating He-strong emission line star: HR7355 (2008)
Rivinius, Th., Stefl, S., Townsend, R. H. D., Baade, D.
Using archival spectroscopic and photometric data, we searched for massive stars with Balmer-emission consistent with magnetically confined circumstellar material. HR 7355 is a formerly unknown...
Spectropolarimetry of the Type IIb Supernova 2001ig (2007)
Maund, J. R., Wheeler, J. C., Patat, F., Wang, L., Baade, D., Hoflich, P. A.
We present spectropolarimetric observations of the Type IIb SN 2001ig in NGC 7424; conducted with the ESO VLT FORS1 on 2001 Dec 16, 2002 Jan 3 and 2002 Aug 16 or 13, 31 and 256 days post-explosion....
Spectropolarimetry of the Type Ib/c SN 2005bf (2007)
Maund, J. R., Wheeler, J. C., Patat, F., Baade, D., Wang, L., Hoflich, P.
We present spectropolarimetric observations of the peculiar Type Ib/c SN 2005bf, in MCG+00-27-005, from 3600-8550\AA. The SN was observed on 2005 April 30.9, 18 days after the first B-band...
An optical supernova associated with the X-ray flash XRF 060218 (2006)
Pian, E., Mazzali, P. A., Masetti, N., Ferrero, P., Klose, S., Palazzi, E., ...
Long-duration gamma-ray bursts (GRBs) are associated with type Ic supernovae(1) that are more luminous than average(2-5) and that eject material at very high velocities. Less-luminous supernovae were...
An optical supernova associated with the X-ray flash XRF 060218 (2006)
Pian, E., Mazzali, P. A., Masetti, N., Ferrero, P., Klose, S., Palazzi, E., ...
Long-duration gamma-ray bursts (GRBs) are associated with type Ic supernovae that are more luminous than average and that eject material at very high velocities. Less-luminous supernovae were not...
An optical supernova associated with the X-ray flash XRF 060218 (2006)
Pian, E., Mazzali, P. A., Masetti, N., Ferrero, P., Klose, S., Palazzi, E., ...
An optical supernova associated with the X-ray flash XRF 060218 (2006)
Pian, E., Mazzali, P.A., Masetti, N., Ferrero, P., Klose, S., Palazzi, E., ...
Long-duration gamma-ray bursts (GRBs) are associated with type Ic supernovae that are more luminous than average and that eject material at very high velocities. Less-luminous supernovae were not...
Spectropolarimetry of GRB 021004 - Evidence for High Velocity Lyman-alpha Absorptions (2003)
Wang, Lifan, Baade, D., Hoeflich, P., Wheeler, J. C.
We present spectropolarimetry observations of GRB 021004 obtained at the ESO VLT. We detect a remarkable increase of the degree of polarization blueward of the host galaxy rest frame Ly-alpha to...
Aspherical Supernovae Explosions (2002)
Hoeflich, P., Khokhlov, A., Wang, L., Wheeler, J. C., Baade, D.
Core collapse supernovae(SN) are the final stages of evolution in massive stars during which the central region collapses. Recent explosion scenarios assumed that the ejection is due to energy...
The Axially Symmetric Ejecta of Supernova 1987A (2002)
Wang, L., Wheeler, J. C., Hoeflich, P., Khokhlov, A., Baade, D., Branch, D., ...
Extensive early observations proved that the ejecta of supernova 1987A (SN 1987A) are aspherical. Fifteen years after the supernova explosion, the Hubble Space Telescope has resolved the rapidly...
The Axisymmetric Ejecta of Supernova 1987A (2002)
Wang, L, Wheeler, JC, Hoflich, P, Khokhlov, A, Baade, D, Branch, D, ...
Extensive early observations proved that the ejecta of supernova 1987A (SN 1987A) are aspherical. The most important of these early observations include (1) the 'Bochum event' that revealed...
Cyclical variability in O-star winds (1998)
Kaper, L., Fullerton, A., Baade, D., Jong, J.A. De, Henrichs, H.F., Zaal, P.A.