Browsing by Author "Van der Plas, Gerrit"

Now showing items 1-9 of 9

    • Accretion kinematics through the warped transition disk in hd142527 from resolved CO(6-5) observations 
      Casassus Montero, Simón; Marino Estay, Sebastián; Pérez, S.; Román, P.; Dunhill, A.; Armitage, P. J.; Cuadra, J.; Wootten, A.; Van der Plas, Gerrit; Cieza, L.; Moral, Víctor; Christiaens, V.; Montesinos, Matías (IOP Publishing, 2015)
      The finding of residual gas in the large central cavity of the HD 142527 disk motivates questions regarding the origin of its non-Keplerian kinematics and possible connections with planet formation. We aim to understand ...
    • An ALMA survey for disks orbiting low-mass stars in the TW Hya Association 
      Rodríguez, David; Van der Plas, Gerrit; Kastner, Joel; Schneider, Adam; Faherty, Jacqueline; Mardones Pérez, Diego; Mohanty, Subhanjoy; Principe, David (EDP Sciences, 2015)
      We carried out an ALMA survey of 15 confirmed or candidate low-mass (<0.2 M-circle dot) members of the TW Hya Association (TWA) with the goal of detecting molecular gas in the form of CO emission, as well as of providing ...
    • Co gas inside the protoplanetary disk cavity in HD142527: disk structure from ALMA 
      Pérez, S.; Casassus Montero, Simón; Ménard, Francois; Román, P.; Van der Plas, Gerrit; Cieza, L.; Pinte, Christophe; Christiaens, V.; Hales, A. (IOP Pub, 2015)
      Inner cavities and annular gaps in circumstellar disks are possible signposts of giant planet formation. The young star HD142527 hosts a massive protoplanetary disk with a large cavity that extends up to 140 AU from the ...
    • A Compact Concentration of Large Grains in the HD 142527 Protoplanetary Dust Trap 
      Casassus Montero, Simón; Wright, Chris; Marino, Sebastian; Maddison, Sarah; Wootten, Al; Roman, Pablo; Pérez, Sebastian; Pinilla, Paola; Wyatt, Mark; Moral, Victor; Ménard, Francois; Christiaens, Valentin; Cieza, Lucas; Van der Plas, Gerrit (The American Astronomical Society, 2015-10-20)
      A pathway to the formation of planetesimals, and eventually giant planets, may occur in concentrations of dust grains trapped in pressure maxima. Dramatic crescent-shaped dust concentrations have been seen in recent ...
    • A compact concentration of large grains in the HD 142527 protoplanetary dust trap 
      Casassus Montero, Simón; Wright, Chris; Marino Estay, Sebastián; Maddison, Sarah T.; Wootten, Al; Román Asenjo, Pablo; Pérez, Sebastián; Pinilla, Paola; Wyatt, Mark; Moral, Víctor; Ménard, Francois; Christiaens, Valentín; Cieza, Lucas; Van der Plas, Gerrit (IOP Publishing, 2015)
      A pathway to the formation of planetesimals, and eventually giant planets, may occur in concentrations of dust grains trapped in pressure maxima. Dramatic crescent-shaped dust concentrations have been seen in recent radio ...
    • Observations of gas flows inside a protoplanetary gap 
      Van der Plas, Gerrit; Pérez M., Sebastián; Dent, William R. F.; Fomalont, Ed; Hagelberg, Janis; Hales, Antonio; Jordán, Andrés; Mawet, Dimitri; Ménard, Francois; Wootten, Al; Wilner, David; Hughes, A. Meredith; Schreiber, Matthias R.; Girard, Julien H.; Ercolano, Bárbara; Canovas, Héctor; Román, Pablo E.; Casassus Montero, Simón; Salinas, Vachail (Nature Publishing Group, 2013-01-10)
      The formation of gaseous giant planets is thought to occur in the first few million years after stellar birth. Models1 predict that the process produces a deep gap in the dust component (shallower in the gas2, 3, 4). ...
    • Radiation thermo-chemical models of protoplanetary discs IV. Modelling CO ro-vibrational emission from ... 
      Thi, W. F.; Kamp, I.; Woitke, P.; Van der Plas, Gerrit; Bertelsen, R.; Wiesenfeld, L. (EDP Sciences, 2013)
      Context. The carbon monoxide (CO) ro-vibrational emission from discs around Herbig Ae stars and T Tauri stars with strong ultraviolet emissions suggests that fluorescence pumping from the ground X1Σ+ to the electronic A1Π ...
    • Spatially resolved HCN J = 4-3 and CS J = 7-6 emission from the disk around HD 142527 
      Van der Plas, Gerrit; Casassus Montero, Simón; Ménard, Francois; Pérez, Sebastián; Thi, W. F.; Pinte, Christophe; Christiaens, Valentin (The American Astronomical Society, 2014-09-10)
      The disk around HD 142527 attracts a great amount of attention compared to others because of its resolved (sub-)millimeter dust continuum that is concentrated into the shape of a horseshoe toward the north of the star. ...
    • The structure of disks around Herbig Ae/Be stars as traced by CO ro-vibrational emission 
      Van der Plas, Gerrit; Ancker, M. E. van den; Waters, L. B. F. M.; Dominik, C. (EDP Sciences, 2015)
      Aims. We study the emission and absorption of CO ro-vibrational lines in the spectra of intermediate mass pre-main-sequence stars with the aim to determine both the spatial distribution of the CO gas and its physical ...