Browsing by Author "0980ba6c-ffa3-4e8a-adc8-4d0c40d93abb"

Now showing items 1-15 of 15

    • 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 inner warp in the DoAr 44 T Tauri transition disc 
      Casassus Montero, Simón; Avenhaus, Henning; Pérez, Sebastián; Navarro, Víctor; Cárcamo, Miguel; Marino, Sebastián; Cieza, Luca; Quanz, Sascha P.; Alarcón, Felipe; Zurlo, Alice; Osses Alvarado, Axel; Rannou, Fernando R.; Román, Pablo E.; Barraza, Marcelo (Oxford University Press, 2018-07)
      Optical/IR images of transition discs (TDs) have revealed deep intensity decrements in the rings of HAeBes HD 142527 and HD 100453 that can be interpreted as shadowing from sharply tilted inner discs, such that the outer ...
    • Astrometric and photometric accuracies in high contrast imaging: The SPHERE speckle calibration tool (SpeCal) 
      Galicher, R.; Boccaletti, A.; Mesa, D.; Delorme, P.; Gratton, R.; Langlois, Maud; Lagrange, Anne Marie; Maire, A.-L.; Le Coroller, H.; Chauvin, G.; Biller, Beth; Cantalloube, Faustine; Janson, Markus; Lagadec, E.; Meunier, N.; Vigan, Arthur; Hagelberg, Janis; Bonnefoy, Mickael; Zurlo, Alice; Rocha, S.; Maurel, D.; Jaquet, M.; Buey, T.; Weber, L. (EDP Sciences, 2018-07-19)
      Context. The consortium of the Spectro-Polarimetric High-contrast Exoplanet REsearch installed at the Very Large Telescope (SPHERE/VLT) has been operating its guaranteed observation time (260 nights over five years) since ...
    • Imaging the water snow-line during a protostellar outburst 
      Cieza González, Lucas; Casassus Montero, Simón; Tobin, John; Bos, Steven; Williams, Jonathan; Pérez, Sebastián; Zhu, Zhaohuan; Canovas, Héctor; Dunham, Michael; Hales, Antonio; Prieto, José; Principe, David; Schreiber, Matthias; Ruiz Rodríguez, Dary; Zurlo, Alice (Nature Publishing Group, 2016)
      A snow-line is the region of a protoplanetary disk at which a major volatile, such as water or carbon monoxide, reaches its condensation temperature. Snow-lines play a crucial role in disk evolution by promoting the rapid ...
    • Long baseline observations of the HD 100546 protoplanetary disk with ALMA 
      Peréz Márquez, Sebastián; Casassus Montero, Simón; Hales, Antonio; Marino, Sebastián; Cheetham, Anthony; Zurlo, Alice; Cieza, Lucas; Dong, Ruobing; Alarcón, Felipe; Benítez Llambay, Pablo; Fomalont, Ed; Avenhaus, Henning (IOP, 2020)
      Using the Atacama Large Millimeter/submillimeter Array, we observed the young Herbig star HD 100546, host to a prominent disk with a deep, wide gap in the dust. The high-resolution 1.3 mm continuum observation reveals fine ...
    • Publisher Note: Circumbinary, not transitional: On the spiral arms, cavity, shadows, fast radial flows, ... 
      Price, Daniel J.; Cuello, Nicolás; Pinte, Christophe; Mentiplay, Daniel; Casassus Montero, Simón; Christiaens, Valentin; Kennedy, Grant M.; Cuadra, Jorge; Sebastian Perez, M.; Marino, Sebastian; Armitage, Philip J.; Zurlo, Alice; Csendes Juhasz, Attila; Ragusa, Enrico; Laibe, Guillaum (Oxford University Press, 2018)
    • RefPlanets: Search for reflected light from extrasolar planets with SPHERE/ZIMPOL 
      Hunziker, S.; Schmid, H. M.; Mouillet, D.; Milli, J.; Zurlo, Alice; Abe, L.; Avenhaus, H.; Baruffolo, A.; Bazzon, A.; Boccaletti, A.; Baudoz, P.; Beuzit, J. L.; Carbillet, M.; Chauvin, G.; Dohlen, K.; Chauvin, G.; Claudi, R.; Costille, A.; Daban, J.-B.; Desidera, S.; Dohlen, K.; Dominik, C.; Downing, M.; Engler, N.; Feldt, M.; Fusco, T.; Ginski, C.; Gisler, D.; Girard, J. H.; Gratton, R.; Henning, Th.; Hubin, N.; Kasper, M.; Keller, C. U.; Langlois, M.; Lagadec, E.; Martínez, P.; Maire, A.-L.; Menard, F.; Meyer, M. R.; Pavlov, A.; Pragt, J.; Puget, P.; Quanz, S. P.; Rickman, E.; Roelfsema, R.; Salasnich, B.; Sauvage, J.-F.; Siebenmorgen, R.; Sissa, E.; Snik, F.; Suárez, M.; Szulágyi, J.; Thalmann, Ch.; Turatto, M.; Udry, S.; Van Holstein, R. G.; Vigan, A.; Wildi, F. (EDP ​​Sciences, 2020)
      Aims. RefPlanets is a guaranteed time observation programme that uses the Zurich IMaging POLarimeter (ZIMPOL) of Spectro-Polarimetric High-contrast Exoplanet REsearch instrument at the Very Large Telescope to perform a ...
    • Resolving the FU Orionis System with ALMA: Interacting Twin Disks? 
      Pérez Márquez, Sebastián; Hales, Antonio; Liu, Hauyu Baobab; Zhu, Zhaohuan; Casassus Montero, Simón; Williams, Jonathan; Zurlo, Alice; Cuello, Nicolás; Cieza, Lucas; Príncipe, David (IOP, 2020)
      FU Orionis objects are low-mass pre-main sequence stars characterized by dramatic outbursts several magnitudes in brightness. These outbursts are linked to episodic accretion events in which stars gain a significant portion ...
    • Testing giant planet formation in the transitional disk of SAO 206462 using deep VLT/SPHERE imaging 
      Maire, A. -L.; Stolker, T.; Messina, S.; Müller, A.; Biller, B. A.; Currie, T.; Dominik, C.; Grady, C. A.; Boccaletti, A.; Bonnefoy, M.; Chauvin, G.; Galicher, R.; Millward, M.; Pohl, A.; Brandner, W.; Henning, Thomas; Lagrange, Anne Marie; Langlois, M.; Meyer, M. R.; Quanz, S. P.; Vigan, A.; Zurlo, Alice; van Boekel, R.; Buenzli, E.; Buey, T.; Desidera, S.; Feldt, M.; Fusco, T.; Ginski, C.; Giro, E.; Gratton, R.; Hubin, N.; Lannier, J.; Le Mignant, D.; Mesa, D.; Peretti, S.; Perrot, C.; Ramos, J. R.; Salter, G.; Samland, M.; Sissa, E.; Stadler, E.; Thalmann, C.; Udry, S.; Weber, L. (EDP Sciences, 2017-05)
      Context. The SAO 206462 (HD 135344B) disk is one of the few known transitional disks showing asymmetric features in scattered light and thermal emission. Near-infrared scattered-light images revealed two bright outer ...
    • The ALMA early science view of FUor/EXor objects - III. The slow and wide outflow of V883 Ori 
      Ruíz Rodríguez, D.; Cieza, L. A.; Williams, J. P.; Principe, D.; Tobin, J. J.; Zhu, Z.; Zurlo, Alice (Oxford University Press, 2017-07)
      We present Atacama Large Millimetre/sub-millimetre Array observations of V883 Ori, an FU Ori object. We describe the molecular outflow and envelope of the system based on the (CO)-C-12 and (CO)-C-13 emissions, which together ...
    • The ALMA early science view of FUor/EXor objects - IV. Misaligned outflows in the complex star-forming ... 
      Principe, David; Cieza, Lucas; Hales, Antonio; Zurlo, Alice; Williams, Jonathan; Ruíz-Rodríguez, Dary; Canovas, Héctor; Casassus Montero, Simón; Mužić, Koraljka; Pérez, Sebastián; Tobin, John; Zhu, Zhaohuan (Oxford University Press, 2017)
      We present Atacama Large Millimeter/sub-millimeter Array (ALMA) observations of the star-forming environment surrounding V1647 Ori, an outbursting FUor/EXor pre-MS star. Dust continuum and the (J = 2 − 1) 12CO, 13CO, ...
    • The ALMA early science view of FUor/EXor objects - V. Continuum disc masses and sizes 
      Cieza, Lucas A.; Ruiz Rodriguez, Dary; Pérez, Sebastián; Casassus Montero, Simón; Williams, Jonathan P.; Zurlo, Alice; Principe, David A.; Hales, Antonio; Prieto, Jose L.; Tobin, John J.; Zhu, Zhaohuan; Marino, Sebastián (Oxford University Press, 2018)
      Low-mass stars build a significant fraction of their total mass during short outbursts of enhanced accretion known as FUor and EXor outbursts. FUor objects are characterized by a sudden brightening of similar to 5 mag at ...
    • The ALMA early science view of FUor/EXor objects – I. Through the looking-glass of V2775 Ori 
      Zurlo, Alice; Cieza, Lucas; Williams, Jonathan; Canovas, Hector; Pérez González, Sebastián; Hales, Antonio; Muzic, Koraljka; Principe, David; Ruíz-Rodríguez, Dary; Tobin, John; Zhu, Zhaohuan; Casassus Montero, Simón; Aliste Prieto, José (Royal Astronomical Society, 2017)
      As part of an Atacama Large Millimeter/submillimiter Array (ALMA) survey to study the origin of episodic accretion in young eruptive variables, we have observed the circum-stellar environment of the star V2775 Ori. This ...
    • The Ophiuchus DIsc Survey Employing ALMA (ODISEA) - I: Project description and continuum images at 28 au resolution 
      Cieza, Lucas A.; Ruíz-Rodríguez, Dary; Hales, Antonio; Casassus Montero, Simón; Pérez, Sebastian; Gonzalez-Ruilova, Camilo; Cánovas, Hector; Williams, Jonathan P.; Zurlo, Alice; Ansdell, Megan; Avenhaus, Henning; Bayo, Amelia; Bertrang, Gesa H.M.; Christiaens, Valentin; Dent, (Oxford University Press, 2019)
      © 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. We introduce the Ophiuchus DIsc Survey Employing ALMA (ODISEA), a project aiming to study the entire population of ...
    • The Ophiuchus DIsc Survey Employing ALMA (ODISEA) – II. The effect of stellar multiplicity on disc properties 
      Zurlo, Alice; Cieza, Lucas A.; Pérez, Sebastián; Christiaens, Valentín; Williams, Jonathan P.; Guidi, Greta; Cánovas, Héctor; Casassus Montero, Simón; Hales Gebrim, Antonio; Principe, David A.; Ruíz Rodríguez, Dary; Fernández Figueroa, Antonia (Oxford University Press, 2020)
      We present adaptive optics (AO) near-infrared (NIR) observations using VLT/NACO and Keck/NIRC2 of Ophiuchus DIsc Survey Employing ALMA (ODISEA) targets. ODISEA is an ALMA survey of the entire population of circumstellar ...