Dietrich Baade

TL;DR: 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.

TL;DR: In this article, a double-troughed absorption feature seen around 800 nm (FWHM about 22 nm) was identified for Type Ia supernova (SN Ia) 2001el with the ESO Very Large Telescope Melipal +FORS1 at five epochs.

TL;DR: In this article, the authors obtained high-quality spectropolarimetry (range 417-860 nm; spectral resolution 1.27 nm and 0.265 nm/pixel) of SN Ia 2001el with the ESO Very Large Telescope Melipal (+ FORS1) at 5 epochs.

TL;DR: The 4-metre Multi-Object Spectroscopic Telescope (4MOST), a new high-multiplex, wide-field spectroscopic survey facility under development for the four-metres-class Visible and Infrared Survey Telescope for Astronomy (VISTA) at Paranal, is introduced.

TL;DR: In this article, the authors present a new synthesis of the old and new data and show that the Bochum event, presumably a clump of 56Ni, and the late-time image, the locus of excitation by 44Ti, are most naturally accounted for by sharing a common position angle of about 14°, the same as the mystery spot and early speckle data on the ejecta, and that they are both oriented along the axis of the inner circumstellar ring at 45° to the plane of the sky.