Search Publications
Highly luminous supernovae associated with gamma-ray bursts. I. GRB 111209A/SN 2011kl in the context of stripped-envelope and superluminous supernovae
Pian, E.; Greiner, J.; Klose, S. +22 more
Context. GRB 111209A, one of the longest gamma-ray bursts (GRBs) ever observed, is linked to SN 2011kl, which is the most luminous GRB supernova (SN) detected so far. Several lines of evidence indicate that this GRB-SN is powered by a magnetar central engine.
Aims: We place SN 2011kl into the context of large samples of SNe, addressing in mor…
Strong lensing models of eight CLASH clusters from extensive spectroscopy: Accurate total mass reconstructions in the cores
Demarco, R.; Zitrin, A.; Grillo, C. +19 more
We carried out a detailed strong lensing analysis of a sub-sample of eight galaxy clusters of the Cluster Lensing And Supernova survey with Hubble (CLASH) in the redshift range of zcluster = [0.23 - 0.59] using extensive spectroscopic information, primarily from the Multi Unit Spectroscopic Explorer (MUSE) archival data and complemented…
Stellar population of Sco OB2 revealed by Gaia DR2 data
Micela, G.; Sciortino, S.; Pillitteri, I. +2 more
Context. The Sco OB2 association is the nearest OB association, extending over approximately 2000 square degrees on the sky. Only its brightest and most massive members are already known (from HIPPARCOS) across its entire size, while studies of its lower mass population refer only to small portions of its extent.
Aims: In this work we exploit…
Barium and related stars, and their white-dwarf companions. I. Giant stars
Jorissen, A.; Escorza, A.; Boffin, H. M. J. +4 more
Context. Barium and S stars without technetium are red giants and are suspected of being members of binary systems due to their overabundances in heavy elements. These elements are produced by the s-process of nucleosynthesis, despite the stars not being evolved enough to be able to activate the s-process in their interiors. A companion formerly o…
The evolution of coronal mass ejections in the inner heliosphere: Implementing the spheromak model with EUHFORIA
Poedts, S.; Verbeke, C.; Pomoell, J.
Aims: We introduce a new model for coronal mass ejections (CMEs) that has been implemented in the magnetohydrodynamics (MHD) inner heliosphere model EUHFORIA. Utilising a linear force-free spheromak (LFFS) solution, the model provides an intrinsic magnetic field structure for the CME. As a result, the new model has the potential to predict th…
Drifting of the line-tied footpoints of CME flux-ropes
Aulanier, Guillaume; Dudík, Jaroslav
Context. Bridging the gap between heliospheric and solar observations of eruptions requires the mapping of interplanetary coronal mass ejection (CME) footpoints down to the Sun's surface. But this not straightforward. Improving the understanding of the spatio-temporal evolutions of eruptive flares requires a comprehensive standard model. But the c…
VLT/SPHERE exploration of the young multiplanetary system PDS70
Rouan, D.; Pinte, C.; Henning, T. +51 more
Context. PDS 70 is a young (5.4 Myr), nearby ( 113 pc) star hosting a known transition disk with a large gap. Recent observations with SPHERE and NACO in the near-infrared (NIR) allowed us to detect a planetary mass companion, PDS 70 b, within the disk cavity. Moreover, observations in Hα with MagAO and MUSE revealed emission associated…
The dwarf galaxy satellite system of Centaurus A
Müller, Oliver; Jerjen, Helmut; Lelli, Federico +4 more
Dwarf galaxy satellite systems are essential probes to test models of structure formation, making it necessary to establish a census of dwarf galaxies outside of our own Local Group. We present deep FORS2 VI band images from the ESO Very Large Telescope (VLT) for 15 dwarf galaxy candidates in the Centaurus group of galaxies. We confirm nine dwarfs…
Using Herschel and Planck observations to delineate the role of magnetic fields in molecular cloud structure
Soler, Juan D.
We present a study of the relative orientation between the magnetic field projected onto the plane of sky (B⊥) on scales down to 0.4 pc, inferred from the polarized thermal emission of Galactic dust observed by Planck at 353 GHz, and the distribution of gas column density (NH) structures on scales down to 0.026 pc, derived fr…
The CARMENES search for exoplanets around M dwarfs. Photospheric parameters of target stars from high-resolution spectroscopy. II. Simultaneous multiwavelength range modeling of activity insensitive lines
Schmitt, J. H. M. M.; Nagel, E.; Amado, P. J. +25 more
We present precise photospheric parameters of 282 M dwarfs determined from fitting the most recent version of PHOENIX models to high-resolution CARMENES spectra in the visible (0.52-0.96 µm) and NIR wavelength range (0.96-1.71 µm). With its aim to search for habitable planets around M dwarfs, several planets of different masses have be…