Browsing by Author "a571b030-a412-4ce9-a7f9-45a8fb1c44be"

Now showing items 1-9 of 9

    • A proposed new diagnostic for Herbig disc geometry FWHM versus J of CO ro-vibrational lines 
      Bertelsen, R.; Kamp, I.; Van der Plas, Gerrit; Van der Ancker, M. E.; Waters, L. B. F. M.; Thi, W. F.; Woitke, P. (EDP Sciences, 2016)
      Aims. The CO ro-vibrational lines observed from Herbig group II discs are often seen to be broad, while the same lines observed from group I discs are often narrow. This difference is not well understood. In this paper we ...
    • ALMA Observations of Elias 2-24: A Protoplanetary Disk with Multiple Gaps in the Ophiuchus Molecular Cloud 
      Cieza, Lucas; Casassus Montero, Simón; Pérez, Sebastián; Hales, Antonio; Cárcamo, Miguel; Ansdell, Megan; Avenhaus, Henning; Bayo, Amelia; Bertrang, Gesa; Cánovas, Hector; Christiaens, Valentin; Dent, William; Ferrero, Gabriel; Gamen, Roberto; Olofsson, Johan; Orcajo, Santiago; Osses, Axel; Peña-Ramirez, Karla; Principe, David; Ruíz-Rodríguez, Dary; Schreiber, Matthias; Van der Plas, Gerrit; Williams, Jonathan; Zurlo, Alice (Institute of Physics Publishing, 2017)
      We present ALMA 1.3 mm continuum observations at 0."2 (25 au) resolution of Elias 2-24, one of the largest andbrightest protoplanetary disks in the Ophiuchus Molecular Cloud, and we report the presence of three partiallyresolved ...
    • An 80 au cavity in the disk around HD 34282 
      Van der Plas, Gerrit; Menard, F.; Canovas, H.; Avenhaus, H.; Casassus Montero, Simón; Pinte, Christophe; Cáceres, C.; Cieza, L. (EDP Sciences, 2017)
      Context. Large cavities in disks are important testing grounds for the mechanisms proposed to drive disk evolution and dispersion, such as dynamical clearing by planets and photoevaporation. Aims. We aim to resolve the ...
    • Dust modeling of the combined ALMA and SPHERE datasets of HD 163296. Is HD 163296 really a Meeus group II disk? 
      Muro Arena, G. A.; Dominik, C.; Waters, L. B. F. M.; Min, M.; Klarmann, L.; Ginski, C.; Isella, A.; Benisty, Myriam; Pohl, A.; Garufi, A.; Hagelberg, J.; Langlois, M.; Menard, F.; Pinte, Christophe; Sezestre, E.; Van der Plas, Gerrit; Villenave, M.; Delboulbe, A.; Magnard, Y.; Moeller-Nilsson, O.; Pragt, J.; Rabou, P.; Roelfsema, R. (ESO, 2018-06)
      Context. Multiwavelength observations are indispensable in studying disk geometry and dust evolution processes in protoplanetary disks. Aims. We aim to construct a three-dimensional model of HD163296 that is capable ...
    • Homogeneous analysis of the dust morphology of transition disks observed with ALMA: investigating dust ... 
      Pinilla, P.; Tazzari, M.; Pascucci, I.; Youdin, A. N.; Garufi, A.; Manara, C. F.; Testi, L.; Van der Plas, Gerrit; Barenfeld, S. A.; Canovas, H.; Cox, E. G.; Hendler, N. P.; Pérez, L. M.; van der Marel, N. (Iop Publishing LTD., 2018-05-20)
      We analyze the dust morphology of 29 transition disks (TDs) observed with Atacama Large (sub-)Millimeter Array (ALMA) at (sub-)millimeter emission. We perform the analysis in the visibility plane to characterize the total ...
    • Millimeter spectral indices and dust trapping by planets in brown dwarf disks 
      Pinilla, P.; Quiroga Núñez, L. H.; Benisty, Myriam; Natta, A.; Ricci, L.; Henning, Thomas; Van der Plas, Gerrit; Birnstiel, T.; Testi, L.; Ward Duon, K. (IOP Publishing Ltd, 2017)
      Disks around brown dwarfs (BDs) are excellent laboratories to study the first steps of planet formation in cold and low-mass disk conditions. The radial-drift velocities of dust particles in BD disks higher than in disks ...
    • Spiral Arms in the Disk of HD 142527 from CO Emission Lines with ALMA 
      Christiaens, Valentin; Casassus Montero, Simón; Pérez, Sebastián; Van der Plas, Gerrit; Ménard, Francois (2014-04-10)
      In view of both the size of its gap and the previously reported asymmetries and near-infrared spiral arms, the transition disk of the Herbig Fe star HD 142527 constitutes a remarkable case study. This paper focuses on ...
    • The Taurus Boundary of stellar/substellar (TBOSS) survey. II. Disk masses from ALMA continuum observations 
      Ward Duong, K.; Patience, J.; Bulger, J.; Van der Plas, Gerrit; Menard, F.; Pinte, Christophe; Jackson, A. P.; Bryden, G.; Turner, N. J.; Harvey, P.; Hales, A.; Rosa, R. J. de (IOP Publishing Ltd, 2018)
      We report 885 mu m ALMA continuum flux densities for 24 Taurus members spanning the stellar/substellar boundary with spectral types from M4 to M7.75. Of the 24 systems, 22 are detected at levels ranging from 1.0 to 55.7 ...
    • Variability in the CO ro-vibrational lines from HD163296 
      Hein Bertelsen, Rosina P.; Kamp, I.; Van der Plas, Gerrit; Van den Ancker, M. E.; Waters, L. B. F. M.; Thi, W.-F.; Woitke, P. (Oxford Univ Press, 2016)
      We present for the first time a direct comparison of multi-epoch (2001-2002 and 2012) CO ro-vibrational emission lines from HD 163296. We find that both the line shapes and the FWHM (full width at half-maximum) differ ...