Browsing by Author "Ménard, Francois"

Now showing items 21-38 of 38

    • Nature of the gas and dust around 51 Ophiuchi : Modelling continuum and Herschel line observations 
      Thi, W. F.; Ménard, Francois; Meeus, G.; Carmona, A.; Riviere Marichalar, P.; Augereau, J. C.; Kamp, I.; Woitke, P.; Pinte, Christophe; Mendigutía, I.; Eiroa, C.; Montesinos, B.; Britain, S.; Dent, W. (EDP Sciences, 2013)
      Context. Circumstellar disc evolution is paramount for the understanding of planet formation. The gas in protoplanetary discs large program (GASPS) aims at determining the circumstellar gas and solid mass around ∼250 ...
    • Near-infrared imaging polarimetry of HD142527 
      Canovas, H.; Ménard, Francois; Hales, A.; Jordán, A.; Schreiber, M. R.; Casassus Farran, Simón; Gledhill, T. M.; Pinte, Christophe (EDP Sciences, 2013)
      Context. HD142527 is a pre-transition disk with strong evidence for ongoing planet formation. Recent observations show a disrupted disk with spiral arms, a dust-depleted inner cavity and the possible presence of gas streams ...
    • Nonazimuthal linear polarization in protoplanetary disks 
      Canovas, H.; Ménard, Francois; Boer, J. de; Pinte, Christophe; Avenhaus, H.; Schreiber, M. (EDP Sciences, 2015)
      Several studies discussing imaging polarimetry observations of protoplanetary disks use the so-called radial Stokes parameters Q and U to discuss the results. This approach has the advantage of providing a direct measure ...
    • 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). ...
    • On the nature of the tertiary companion to FW Tau: ALMA CO observations and SED modeling 
      Cáceres, Claudio; Hardy, Adam; Schreiber, Matthias R.; Cánovas, Héctor; Cieza, Lucas A.; Williams, Jonathan P.; Hales, Antonio; Pinte, Christophe; Ménard, Francois; Wahhaj, Zahed (IOP Publishing, 2015)
      It is thought that planetary mass companions may form through gravitational disk instabilities or core accretion. Identifying such objects in the process of formation would provide the most direct test for the competing ...
    • Optical Imaging Polarimetry of the LkCa 15 protoplanetary Disk with Sphere Zimpol 
      Thalmann, C.; Mulders, G. D.; Janson, M.; Olofsson, J.; Benisty, Myriam; Avenhaus, H.; Quanz, S. P.; Schmid, H. M.; Henning, Thomas; Buenzli, E.; Ménard, Francois; Carson, J. C.; Garufi, A.; Messina, S.; Dominik, C.; Leisenring, J.; Chauvin, G.; Meyer, M. R. (IOP Publishing, 2015)
      We present the first optical (590-890 nm) imaging polarimetry observations of the pre-transitional protoplanetary disk around the young solar analog LkCa 15, addressing a number of open questions raised by previous studies. ...
    • Probing the final stages of protoplanetary disk evolution with ALMA 
      Hardy, Adam; Cáceres, C.; Schreiber, Matthias R.; Cieza González, Lucas; Alexander, R. D.; Cánovas, H.; Williams, Jonathan P.; Wahhaj, Zahed; Ménard, Francois (EDP Sciences, 2015)
      Context. The evolution of a circumstellar disk from its gas-rich protoplanetary stage to its gas-poor debris stage is not understood well. It is apparent that disk clearing progresses from the inside-out on a short time ...
    • Resolving structure of the disc around HD100546 at 7 mm with ATCA 
      Wright, C. M.; Maddison, S. T.; Wilner, D. J.; Burton, M. G.; Lommen, D.; Dishoeck, E. F. van; Pinilla, P.; Bourke, T. L.; Ménard, Francois; Walsh, C. (Royal Astronomical Society, 2015)
      There is much evidence that planet formation is occurring in the disc around the Herbig Be star HD100546. To learn more about the processes occurring in this disc, we conducted high-resolution imaging at 43/45 GHz with the ...
    • A ring-like concentration of mm-sized particles in Sz 91 
      Cánovas, Héctor; Cáceres, C.; Schreiber, Matthias R.; Hardy, Adam; Cieza González, Lucas; Ménard, Francois; Hales, Antonio (Oxford Univ Press, 2016)
      Models of planet formation and disc evolution predict a variety of observables in the dust structure of protoplanetary discs. Here, we present Atacama Large Millimeter/submillimeter Array (ALMA) Band-6 and Band-7 observations ...
    • Sculpting the disk around T Chamaeleontis: an interferometric view 
      Olofsson, J.; Benisty, Myriam; Le Bouquin, J. B.; Berger, J. P; Lacour, S.; Ménard, Francois; Henning, Thomas; Crida, A.; Burtscher, L.; Meeus, G.; Ratzka, T.; Pinte, Christophe; Augereau, J. C.; Malbet, F.; Lazare, B.; Traub, W. (EDP Sciences, 2013)
      Context. Circumstellar disks are believed to be the birthplace of planets and are expected to dissipate on a timescale of a few Myr. The processes responsible for the removal of the dust and gas will strongly modify the ...
    • Sparse aperture masking observations of the FL Cha pre-transitional disk 
      Cieza, Lucas A.; Lacour, Sylvestre; Schreiber, Matthias R.; Casassus Montero, Simón; Jordán, Andrés; Mathews, Geoffrey S.; Cánovas, Héctor; Ménard, Francois; Kraus, Adam L.; Pérez, Sebastián; Tuthill, Peter; Ireland, Michael J. (The American Astronomical Society, 2013)
      We present deep Sparse Aperture Masking (SAM) observations obtained with the ESO Very Large Telescope of the pre-transitional disk object FL Cha (SpT = K8, d = 160 pc), the disk of which is known to have a wide optically thin ...
    • 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. ...
    • 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 dynamically disrupted GAP in HD 142527 
      Casassus Montero, Simón; Pérez M., S.; Jordán, A.; Ménard, Francois; Cuadra, J.; Schreiber, M. R.; Hales, A.; Ercolano, B. (IOP PUBLISHING LTD, 2012-08-01)
      The vestiges of planet formation have been observed in debris disks harboring young and massive gaseous giants. The process of giant planet formation is terminated by the dissipation of gas in the protoplanetary disk. The ...
    • Unveiling the gas-and-dust disk structure in HD 163296 using ALMA observations 
      De Gregorio Monsalvo, Itziar; Ménard, Francois; Dent, W.; Pinte, Christophe; López Saavedra, Celso; Klaassen, C.; Hales, A.; Cortés, P.; Rawlings, M. G.; Tachihara, K.; Testi, L.; Takahashi, S.; Chapillon, E.; Mathews, G.; Juhasz, A.; Akiyama, E.; Higuchi, Aya; Saito, M.; Nyman, L. A.; Phillips, N.; Rodón, J.; Corder, S.; Van Kempen, T. (EDP Sciences, 2013)
      Aims. The aim of this work is to study the structure of the protoplanetary disk surrounding the Herbig Ae star HD 163296. Methods. We used high-resolution and high-sensitivity ALMA observations of the CO(3–2) emission ...
    • Very Large Telescope observations of Gomez's Hamburger: Insights into a young protoplanet candidate 
      Berné, O.; Fuente, A.; Pantin, E.; Bujarrabal, V.; Baruteau, C.; Pilleri, P.; Habart, E.; Ménard, Francois; Cernicharo, J.; Tielens, A. G. G. M.; Joblin, C. (ESO, 2015)
      Planets are thought to form in the gas and dust disks around young stars. In particular, it has been proposed that giant planets can form through the gravitational instability of massive extended disks around intermediate-mass ...
    • The VLTI/PIONIER near-infrared interferometric survey of southern T Tauri stars 
      Anthonioz, F.; Ménard, Francois; Pinte, Christophe; Le Bouquin, J. B.; Benisty, Myriam; Thi, W. F.; Absil, Olivier; Duchêne, G.; Augereau, J. C.; Berger, J. P.; Casassus Montero, Simón; Duvert, G.; Lazare, B.; Malbet, F.; Millan Gabet, R.; Schreiber, M. R.; Traub, W.; Zins, G. (EDP Sciences, 2015)
      Context. The properties of the inner disks of bright Herbig AeBe stars have been studied with near-infrared (NIR) interferometry and high resolution spectroscopy. The continuum (dust) and a few molecular gas species have ...
    • Water vapor in the protoplanetary disk of DG Tau 
      Podio, L.; Kamp, I.; Codella, C.; Cabrit, S.; Nisini, B.; Dougados, C.; Sandell, G.; Williams, J. P.; Testi, L.; Thi, W. F.; Woitke, P.; Meijerink, R.; Spaans, M.; Aresu, G.; Ménard, Francois; Pinte, Christophe (The American Astronomical Society, 2013)
      Water is key in the evolution of protoplanetary disks and the formation of comets and icy/water planets. While high-excitation water lines originating in the hot inner disk have been detected in several T Tauri stars ...