Browsing by Author "Christiaens, Valentin"

Now showing items 1-6 of 6

    • A dusty filament and turbulent CO spirals in HD 135344B-SAO 206462 
      Casassus, Simon; Christiaens, Valentin; Carcamo, Miguel; Pérez, Sebastián; Weber, Philipp; Ercolano, Barbara; van der Marel, Nienke; Pinte, Christophe; Dong, Ruobing; Baruteau, Clement; Cieza, Lucas; van Dishoeck, Ewine F.; Jordán, Andrés; Price, Daniel J.; Absil, Olivier; Arce Tord, Carla Alessandra; Faramaz, Virginie; Flores, Christian; Reggiani, Maddalena (Oxford, 2021)
      Planet-disc interactions build up local pressure maxima that may halt the radial drift of protoplanetary dust, and pile it up in rings and crescents. ALMA observations of the HD 135344B disc revealed two rings in the thermal ...
    • 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 ...