An optical supernova associated with the X-ray flash XRF 060218
- E. Pian, P. Mazzali, R. Starling
- PhysicsNature
- 20 March 2006
The data, combined with radio and X-ray observations, suggest that XRF 060218 is an intrinsically weak and soft event, rather than a classical GRB observed off-axis, which extends the GRB–supernova connection to X-rays flashes and fainter supernovae, implying a common origin.
Spectropolarimetry of SN 2001el in NGC 1448: Asphericity of a Normal Type Ia Supernova
- Lifan Wang, D. Baade, P. Lundqvist
- Physics
- 17 March 2003
High-quality spectropolarimetry (range 417-860 nm; spectral resolution 1.27 nm and 0.265 nm pixel-1) of the Type Ia supernova (SN Ia) 2001el was obtained with the ESO Very Large Telescope Melipal…
Non-radially pulsating Be stars
- T. Rivinius, D. Baade, S. Štefl
- Physics
- 1 November 2003
Based on more than 3000 high-resolution echelle spectra of 27 early-type Be stars, taken over six years, it is shown that the short-term periodic line profile variability of these objects is due to…
Spectropolarimetric Diagnostics of Thermonuclear Supernova Explosions
- Lifan Wang, D. Baade, F. Patat
- PhysicsScience
- 29 November 2006
It is suggested that type Ia supernova ejecta typically consist of a smooth, central, iron-rich core and an outer layer with chemical asymmetries and the degree of this peripheral asphericity is correlated with the light-curve decline rate of type IA supernovae.
Analysis of the Flux and Polarization Spectra of the Type Ia Supernova SN 2001el: Exploring the Geometry of the High-Velocity Ejecta
- D. Kasen, P. Nugent, P. Hauschildt
- Physics
- 16 January 2003
SN 2001el is the first normal Type Ia supernova to show a strong, intrinsic polarization signal. In addition, during the epochs prior to maximum light, the Ca II IR triplet absorption is seen…
On the Hydrogen Emission from the Type Ia Supernova SN 2002ic
- Lifan Wang, D. Baade, P. Hoeflich, J. Wheeler, K. Kawabata, K. Nomoto
- Physics
- 18 December 2003
The discovery of SN 2002ic and subsequent spectroscopic studies have led to the surprising finding that SN 2002ic is a Type Ia supernova with strong ejecta-circumstellar interaction. Here we show…
Premaximum Spectropolarimetry of the Type Ia SN 2004dt
- Lifan Wang, D. Baade, F. Patat
- Physics
- 24 September 2004
We report observations of SN 2004dt obtained with the Very Large Telescope (VLT) of the European Southern Observatory (ESO) on 2004 August 13.30, when the supernova was more than a week before…
A Spectroscopic Orbit for Regulus
- D. Gies, S. Dieterich, D. Baade
- Physics
- 20 June 2008
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 days) and probable semimajor axis…
Rapid variability of OB-stars: nature and diagnostic value.
- D. Baade
- Physics
- 1991
Tile purpose of Ihe workshop is to extensively discuss Ihe various models which have been suggested to explain Ihe rapid variability 01 early-type slars. In addition 10 the comparison of observalions…
CRIRES+: a cross-dispersed high-resolution infrared spectrograph for the ESO VLT
- R. Follert, R. Dorn, J. Smoker
- PhysicsAstronomical Telescopes and Instrumentation
- 8 July 2014
High-resolution infrared spectroscopy plays an important role in astrophysics from the search for exoplanets to cosmology. Yet, many existing infrared spectrographs are limited by a rather small…
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