Browsing by Author "Christiaens, Valentin"

Now showing items 1-5 of 5

    • Circumbinary, not transitional: on the spiral arms, cavity, shadows, fast radial flows, streamers, and ... 
      Price, Daniel J.; Cuello, Nicolás; Pinte, Christophe; Mentiplay, Daniel; Casassus Montero, Simón; Christiaens, Valentin; Kennedy, Grant M.; Cuadra, Jorge; Pérez M., Sebastián; Marino, Sebastian; Armitage, Philip J.; Zurlo, Alice; Juhasz, Attila; Ragusa, Enrico; Laibe, Guillaume; Lodato, Giuseppe (Oxford University Press, 2018)
      We present 3D hydrodynamical models of the HD 142527 protoplanetary disc, a bright and well-studied disc that shows spirals and shadows in scattered light around a 100 au gas cavity, a large horseshoe dust structure in mm ...
    • 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 ...
    • External or internal companion exciting the spiral arms in CQ Tau? 
      Hammond, Iain; Christiaens, Valentin; Price, Daniel J.; Ubeira Gabellini, Maria Giulia; Baird, Jennifer; Calcino, Josh; Benisty, Myriam; Lodato, Giuseppe; Testi, Leonardo; Pinte, Christophe; Toci, Claudia; Fedele, Davide (Oxford Univ Press, 2022)
      We present new high-contrast images in near-infrared wavelengths (lambda(c) = 1.04, 1.24, 1.62, 2.18, and 3.78 mu m) of the young variable star CQ Tau, aiming to constrain the presence of companions in the protoplanetary ...
    • In-depth direct imaging and spectroscopic characterization of the young Solar System analog HD 95086 
      Desgrange, C.; Chauvin, G.; Christiaens, Valentin; Cantalloube, Faustine; Lefranc, L. X.; Le Coroller, H.; Rubini, P.; Otten, G. P. P. L.; Beust, H.; Bonavita, M.; Delorme, P.; Devinat, M.; Gratton, R.; Lagrange, A. M.; Langlois, M.; Mesa, D.; Milli, J.; Szulágyi, J.; Nowak, M.; Rodet, L.; Rojo, P.; Petrus, S.; Janson, M.; Henning, T.; Kral, Q.; Van Holstein, R .G.; Ménard, Franois; Beuzit, J. L.; Biller, B.; Boccaletti, A.; Bonnefoy, M.; Brown, S.; Costille, A.; Delboulbe, A.; Desidera, S.; Orazi, V. D.; Feldt, M.; Fusco, T.; Galicher, R.; Hagelberg, J.; Lazzoni, C.; Ligi, R.; Maire, A. L.; Messina, S.; Meyer, M.; Potier, A.; Ramos, J.; Rouan, D.; Schmidt, T.; Vigan, A.; Zurlo, Alice (EDP Sciences, 2022)
      Context. HD95086 is a young nearby Solar System analog hosting a giant exoplanet orbiting at 57 au from the star between an inner and outer debris belt. The existence of additional planets has been suggested as the mechanism ...
    • 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 ...