Browsing by Subject "Radiative transfer"

Now showing items 21-29 of 29

    • Simulations of light curves and spectra for superluminous Type Ic supernovae powered by magnetars 
      Dessart, Luc (EDP Sciences, 2019)
      Numerous superluminous supernovae (SLSNe) of Type Ic have been discovered and monitored in the last decade. The favored mechanism at their origin is a sustained power injection from a magnetar. This study presents non-local ...
    • Spatial segregation of dust grains in transition disks : SPHERE observations of 2MASS J16083070-3828268 and ... 
      Villenave, M.; Benisty, Myriam; Dent, W. R.F.; Ménard, F.; Garufi, A.; Ginski, C.; Pinilla, P.; Pinte, C.; Williams, J. P.; De Boer, J.; Morino, J. I.; Fukagawa, M.; Dominik, C.; Flock, M.; Henning, T.; Juhász, A.; Keppler, M.; Muro-Arena, G.; Olofsson, J.; Pérez, L. M.; Van Der (EDP Sciences, 2019)
      Context. The mechanisms governing the opening of cavities in transition disks are not fully understood. Several processes have been proposed, but their occurrence rate is still unknown. Aims. We present spatially resolved ...
    • Super-luminous type II supernovae powered by magnetars 
      Dessart, Luc; Audit, Edouard (EDP Sciences, 2018-05-15)
      Magnetar power is believed to be at the origin of numerous super-luminous supernovae (SNe) of Type Ic, arising from compact, hydrogen-deficient, Wolf-Rayet type stars. Here, we investigate the properties that magnetar power ...
    • Supernovae from blue supergiant progenitors: What a mess! 
      Dessart, Luc; Hillier, D. John (EDP Sciences, 2019)
      Supernova (SN) 1987A was classified as a peculiar Type II SN because of its long rising light curve and the persistent presence of H I lines in optical spectra. It was subsequently realized that its progenitor was a blue ...
    • Supernovae from massive stars with extended tenuous envelopes 
      Dessart, Luc; Yoon, Sung-Chul; Livne, Eli; Waldman, Roni (EDP Sciences S A, 2018)
      Massive stars with a core-halo structure are interesting objects for stellar physics and hydrodynamics. Using simulations for stellar evolution, radiation hydrodynamics, and radiative transfer, we study the explosion of ...
    • The circumstellar disk HD 169142: gas, dust, and planets acting in concert? 
      Pohl, A.; Benisty, Myriam; Pinilla, P.; Ginski, C.; Zurlo, A. (IOP Publishing Ltd., 2017)
      HD 169142 is an excellent target for investigating signs of planet-disk interaction due to previous evidence of gap structures. We perform J-band (similar to 1.2 mu m) polarized intensity imaging of HD 169142 with VLT/SPHERE. ...
    • The dust covering factor in active galactic nuclei 
      Stalevski, Marko; Ricci, Claudio; Ueda, Yoshihiro; Lira Teillery, Paulina; Fritz, Jacopo; Baes, Maarten (Oxford Univ Press, 2016)
      The primary source of emission of active galactic nuclei (AGNs), the accretion disc, is surrounded by an optically and geometrically thick dusty structure ('the so-called dusty torus'). The infrared radiation emitted by ...
    • Understanding nebular spectra of Type Ia supernovae 
      Wilk, Kevin D.; Hillier, D. John; Dessart, Luc (Oxford University Press, 2020)
      In this study, we present one-dimensional, non-local-thermodynamic-equilibrium, radiative transfer simulations (using CMFGEN) in which we introduce micro-clumping at nebular times into two Type Ia supernova ejecta models. ...
    • Variable Dynamics in the Inner Disk of HD 135344B Revealed with Multi-epoch Scattered Light Imaging 
      Stolker, Tomas; Sitko, Mike; Lazareff, Bernard; Benisty, Myriam; Dominik, Carsten; Waters, Rens; Min, Michiel; Pérez, Sebastian; Milli, Julien; Garufi, Antonio; de Boer, Jozua; Ginski, Christian; Kraus, Stefan; Berger, Jean-Philippe; Avenhaus, Henning (IOP Publishing Ltd, 2017)
      We present multi-epoch Very Large Telescope/Spectro-Polarimetric High-contrast Exoplanet REsearch (VLT/SPHERE) observations of the protoplanetary disk around HD. 135344B (SAO 206462). The J-band scattered light imagery ...