Browsing by Author "23f2cbaf-c81f-4e09-ae70-d6c0293bc7fb"

Now showing items 1-20 of 22

    • A tale of two transition disks: alma long-baseline observations of iso-oph 2 reveal two closely packed ... 
      González Ruilova, Camilo; Cieza, Lucas A.; Hales, Antonio S.; Pérez, Sebastián; Zurlo, A.; Arce Tord, Carla; Casassus Montero, Simón; Canovas, Héctor; Flock, Mario; Herczeg, Gregory J.; Pinilla, Paola; Price, Daniel J.; Príncipe, David A.; Ruiz Rodríguez, Dary; Williams, Jonathan P. (IOP Publishing, 2020)
      ISO-Oph 2 is a wide-separation (240 au) binary system where the primary star harbors a massive (M-dust similar to 40M(circle plus)) ring-like disk with a dust cavity similar to 50 au in radius and the secondary hosts a ...
    • Characterization of low-mass companion HD 142527 B 
      Christiaens, V.; Casassus Montero, Simón; Absil, O.; Kimeswenger, S.; Gómez González, Carlos; Girard, J.; Ramírez, R.; Wertz, O.; Zurlo, A.; Wahhaj, Z.; Flores, C.; Salinas, V.; Jordán, A.; Mawet, D. (EDP Sciences, 2018)
      Context. The circumstellar disk of the Herbig Fe star HD 142527 is host to several remarkable features including a warped inner disk, a 120 au-wide annular gap, a prominent dust trap and several spiral arms. A low-mass ...
    • Characterizing HR 3549 B using SPHERE 
      Mesa, D.; Vigan, A.; D’Orazi, V.; Ginski, C.; Desidera, S.; Bonnefoy, M.; Gratton, R.; Langlois, M.; Marzari, F.; Messina, S.; Antichi, J.; Biller, B.; Bonavita, M.; Cascone, E.; Chauvin, G.; Claudi, R. U.; Curtis, I.; Fantinel, D.; Feldt, M.; Garufi, A.; Galicher, R.; Henning, Thomas; Incorvaia, S.; Lagrange, Anne Marie; Millward, M.; Perrot, C.; Salasnich, B.; Scuderi, S.; Sissa, E.; Wahhaj, Z.; Zurlo, A. (EDP Sciences, 2016)
      Aims. In this work, we characterize the low-mass companion of the AO field star HR 3549. Methods. We observed HR 3549B in imaging mode with the near-infrared branch (IFS and IRDIS) of SPHERE at the VLT, with IFS in YJ ...
    • Discovery of a brown dwarf companion to the star HIP 64892 
      Cheetham, A.; Bonnefoy, M.; Desidera, S.; Langlois, M.; Vigan, A.; Schmidt, T.; Olofsson, J.; Chauvin, G.; Klahr, H.; Gratton, R.; D’Orazi, V.; Henning, Thomas; Janson, M.; Biller, B.; Peretti, S.; Hagelberg, J.; Ségransan, D.; Udry, S.; Mesa, D.; Sissa, E.; Kral, Q.; Schlieder, J.; Maire, A.-L; Mordasini, C.; Menard, F.; Zurlo, A.; Beuzit, Jean-Luc; Feldt, M.; Mouillet, D.; Meyer, M.; Lagrange, Anne Marie; Boccaletti, A.; Keppler, M.; Kopytova, T.; Ligi, R.; Rouan, D.; Le Coroller, H.; Dominik, C.; Lagadec, E.; Turatto, M.; Abe, L.; Antichi, J.; Baruffolo, A.; Baudoz, P.; Blanchard, P.; Buey, T.; Carbillet, M.; Carle, M.; Cascone, E.; Claudi, R.; Costille, A.; Delboulbé, A.; De Caprio, V.; Dohlen, K.; Fantinel, D.; Feautrier, P.; Fusco, T.; Giro, E.; Gluck, L.; Hubin, N.; Hugot, E.; Jaquet, M.; Kasper, M.; Llored, M.; Madec, F.; Magnard, Y.; Martínez, P.; Maurel, D.; Le Mignant, D.; Moller-Nilsson, O.; Moulin, T.; Origné, A.; Pavlov, A.; Perret, D.; Petit, C.; Pragt, J.; Puget, P.; Rabou, P.; Ramos, J.; Rigal, F.; Rochat, S.; Roelfsema, R.; Rousset, G.; Roux, A.; Salasnich, B.; Sauvage, J.-F.; Sevin, A.; Soenke, C.; Stadler, E.; Suárez, M.; Weber, L.; Wildi, F. (EDP Sciences, 2018)
      We report the discovery of a bright, brown dwarf companion to the star HIP 64892, imaged with VLT/SPHERE during the SHINE exoplanet survey. The host is a B9.5V member of the Lower-Centaurus-Crux subgroup of the Scorpius ...
    • Disks around T Tauri stars with sphere (DARTTS-S) II. Twenty- one new polarimetric images of young stellar disks 
      Garufi, A.; Avenhaus, H.; Pérez, S.; Quanz, S. P.; van Holstein, R. G.; Bertrang, G. H-M; Casassus Montero, Simón; Cieza, L.; Principe, D. A.; van der Plas, G.; Zurlo, A. (EDP Sciences, 2020)
      Context. Near-IR polarimetric images of protoplanetary disks enable us to characterize substructures that might be due to the interaction with (forming) planets. The available census is strongly biased toward massive disks ...
    • Eccentricity in planetary systems and the role of binarity: sample definition, initial results, and the ... 
      Moutou, C.; Vigan, A.; Mesa, D.; Desidera, S.; Thebault, P.; Zurlo, A.; Salter, G. (EDP Sciences, 2017)
      We explore the multiplicity of exoplanet host stars with high-resolution images obtained with VLT/ SPHERE. Two different samples of systems were observed: one containing low-eccentricity outer planets, and the other ...
    • Exploring dust around HD 142527 down to 0.025 (4au) using SPHERE/ZIMPOL 
      Avenhaus, H.; Quanz, S. P.; Schmid, H. M.; Dominik, C.; Stolker, T.; Ginski, C.; de Boer, J.; Szulagyi, J.; Garufi, A.; Zurlo, A.; Hagelberg, J.; Benisty, Myriam; Henning, Thomas; Menard, F.; Meyer, M. R. (IOP Publishing Ltd., 2017)
      We have observed the protoplanetary disk of the well-known young Herbig star HD 142527 using ZIMPOL polarimetric differential imaging with the very broad band (similar to 600-900 nm) filter. We obtained two data sets in ...
    • First light of the VLT planet finder SPHERE II. The physical properties and the architecture of the young ... 
      Maire, A.-L.; Bonnefoy, M.; Ginski, C.; Vigan, A.; Messina, S.; Mesa, D.; Galicher, R.; Gratton, R.; Desidera, S.; Kopytova, T. G.; Millward, M.; Thalmann, C.; Claudi, R. U.; Ehrenreich, D.; Zurlo, A.; Chauvin, G.; Antichi, J.; Baruffolo, A.; Bazzon, A.; Beuzit, J. -L.; Blanchard, P.; Boccaletti, A.; Boer, J. de; Carle, M.; Cascone, E.; Costille, A.; De Caprio, V.; Delboulbe, A.; Dohlen, K.; Dominik, C.; Feldt, M.; Fusco, T.; Girard, J. H.; Giro, E.; Gisler, D.; Gluck, L.; Gry, C.; Henning, Thomas; Hubin, N.; Hugot, E.; Jaquet, M.; Kasper, M.; Lagrange, Anne Marie; Langlois, M.; Le Mignant, D.; Llored, M.; Madec, F.; Martinez, P.; Mawet, D.; Milli, J.; Moeller-Nilsson, O.; Mouillet, D.; Moulin, T.; Moutou, C.; Origne, A.; Pavlov, A.; Petit, C.; Pragt, J.; Puget, P.; Ramos, J.; Rochat, S.; Roelfsema, R.; Salasnich, B.; Sauvage, Jean Francois; Schmid, H. M.; Turatto, M.; Udry, S.; Vakili, F.; Wahhaj, Z.; Weber, L.; Wildi, F. (EDP Sciences S.A., 2016-03)
      Context. The young systems PZ Tel and HD 1160, hosting known low-mass companions, were observed during the commissioning of the new planet finder of the Very Large Telescope (VLT) SPHERE with several imaging and spectroscopic ...
    • First light of the VLT planet finder SPHERE III. New spectrophotometry and astrometry of the HR 8799 ... 
      Zurlo, A.; Vigan, A.; Galicher, R.; Maire, Anne-Lise; Mesa, D.; Gratton, R.; Chauvin, G.; Kasper, M.; Moutou, C.; Bonnefoy, M.; Desidera, S.; Abe, L.; Apai, D.; Baruffolo, A.; Baudoz, P.; Baudrand, J.; Beuzit, J. -L.; Blancard, P.; Boccaletti, A.; Cantalloube, F.; Carle, M.; Cascone, E.; Charton, J.; Claudi, R. U.; Costille, A.; Caprio, V. de; Dohlen, K.; Dominik, C.; Fantinel, D.; Feautrier, P.; Feldt, M.; Fusco, T.; Gigan, P.; Girard, J. H.; Gisler, D.; Gluck, L.; Gry, C.; Henning, Thomas; Hugot, E.; Janson, M.; Jaquet, M.; Lagrange, Anne Marie; Langlois, M.; Llored, M.; Madec, F.; Magnard, Y.; Martinez, P.; Maurel, D.; Mawet, D.; Meyer, M. R.; Milli, J.; Moeller-Nilsson, O.; Mouillet, D.; Origne, A.; Pavlov, A.; Petit, C.; Puget, P.; Quanz, S. P.; Rabou, P.; Ramos, J.; Rousset, G.; Roux, A.; Salasnich, B.; Salter, G.; Sauvage, Jean Francois; Schmid, H. M.; Soenke, C.; Stadler, E.; Suarez, M.; Turatto, M.; Udry, S.; Vakili, F.; Wahhaj, Z.; Wildi, F.; Antichi, J. (EDP Sciences S.A., 2016-03)
      Context. The planetary system discovered around the young A-type HR8799 provides a unique laboratory to: a) test planet formation theories; b) probe the diversity of system architectures at these separations, and c) perform ...
    • First light of the VLT planet finder SPHERE IV. Physical and chemical properties of the planets around HR8799 
      Bonnefoy, M.; Zurlo, A.; Baudino, J. L.; Lucas, P.; Mesa, D.; Maire, Anne-Lise; Vigan, A.; Galicher, R.; Homeier, D.; Marocco, F.; Gratton, R.; Chauvin, G.; Allard, F.; Desidera, S.; Kasper, M.; Moutou, C.; Lagrange, Anne Marie; Antichi, J.; Baruffolo, A.; Baudrand, J.; Beuzit, J. -L.; Boccaletti, A.; Cantalloube, F.; Carbillet, M.; Charton, J.; Claudi, R. U.; Costille, A.; Dohlen, K.; Dominik, C.; Fantinel, D.; Feautrier, P.; Feldt, M.; Fusco, T.; Gigan, P.; Girard, J. H.; Gluck, L.; Gry, C.; Henning, Thomas; Janson, M.; Langlois, M.; Madec, F.; Magnard, Y.; Maurel, D.; Mawet, D.; Meyer, M. R.; Milli, J.; Moeller-Nilsson, O.; Mouillet, D.; Pavlov, A.; Perret, D.; Pujet, P.; Quanz, S. P.; Rochat, S.; Rousset, G.; Roux, A.; Salasnich, B.; Salter, G.; Sauvage, Jean Francois; Schmid, H. M.; Sevin, A.; Soenke, C.; Stadler, E.; Turatto, M.; Udry, S.; Vakili, F.; Wahhaj, Z.; Wildi, F. (EDP Sciences S.A., 2016-03)
      Context. The system of four planets discovered around the intermediate-mass star HR8799 offers a unique opportunity to test planet formation theories at large orbital radii and to probe the physics and chemistry at play ...
    • Gap, shadows, spirals, and streamers: SPHERE observations of binary-disk interactions in GG Tauri A 
      Keppler, M.; Penzlin, A.; Benisty, Myriam; van Boekel, R.; Henning, T.; Van Holstein, R. G.; Kley, W.; Garufi, A.; Ginski, C.; Brandner, W.; Bertrang, Gesa H. M.; Boccaletti, A.; de Boer, J.; Bonavita, M.; Brown Sevilla, S.; Chauvin, Gael Epely; Dominik, C.; Janson, M.; Langlois, M.; Lodato, G.; Maire, A. L.; Ménard, F.; Pantin, E.; Pinte, C.; Stolker, T.; Szulágyi, J.; Thebault, P.; Villenave, M.; Zurlo, A.; Rabou, P.; Feautrier, P.; Feautrier, P.; Feldt, M.; Madec, F.; Wildi, F. (EDP Science, 2020)
      Context. A large portion of stars is found to be part of binary or higher-order multiple systems. The ubiquity of planets found around single stars raises the question of whether and how planets in binary systems form. ...
    • Investigation of the inner structures around HD169142 with VLT/SPHERE 
      Ligi, R.; Zurlo, A. (Oxford University Press, 2018)
      We present observations of the Herbig Ae star HD 169142 with the VLT/SPHERE instruments InfraRed Dual-band Imager and Spectrograph (IRDIS) (K1K2 and H2H3 bands) and the Integral Field Spectrograph (IFS) (Y, J and H bands). ...
    • New constraints on the disk characteristics and companion candidates around T Chamaeleontis with VLT/SPHERE 
      Pohl, A.; Sissa, E.; Langlois, M.; Zurlo, A. (EDP Sciences, 2017)
      Context. The transition disk around the T Tauri star T Cha possesses a large gap, making it a prime target for high-resolution imaging in the context of planet formation. Aims. We aim to find signs of disk evolutionary ...
    • New disk discovered with VLT/SPHERE around the M star GSC 07396−00759 
      Sissa, E.; Zurlo, A. (EDP. Sciences S.A, 2018-05-25)
      Debris disks are usually detected through the infrared excess over the photospheric level of their host star. The most favorable stars for disk detection are those with spectral types between A and K, while the statistics ...
    • Orbital and spectral characterization of the benchmark T-type brown dwarf HD19467B 
      Maire, A.-L.; Molaverdikhani, K.; Desidera, S.; Trifonov, T.; Mollière, P.; D’Orazi, V.; Frankel, N.; Baudino, J. L.; Messina, S.; Müller, A.; Charnay, B.; Cheetham, A. C.; Delorme, P.; Ligi, R.; Bonnefoy, M.; Brandner, W.; Mesa, D.; Cantalloube, F.; Galicher, R.; Henning, T.; Biller, B. A.; Hagelberg, J.; Lagrange, A. M.; Lavie, B.; Rickman, E.; Ségransan, D.; Udry, S.; Chauvin, Gaël; Gratton, R.; Langlois, M.; Vigan, A.; Meyer, M. R.; Beuzit, J. L.; Bhowmik, T.; Boccaletti, A.; Lazzoni, C.; Perrot, C.; Schmidt, T.; Zurlo, A.; Gluck, L.; Pragt, J.; Ramos, J.; Roelfsema, R.; Roux, A.; Sauvage, J. F. (EDP Science, 2020)
      Context. Detecting and characterizing substellar companions for which the luminosity, mass, and age can be determined independently is of utter importance to test and calibrate the evolutionary models due to uncertainties ...
    • Shadowing and multiple rings in the protoplanetary disk of HD 139614 
      Muro Arena, G. A.; Benisty, Myriam; Ginski, C.; Dominik, C.; Facchini, S.; Villenave, M.; van Boekel, R.; Chauvin, G.; Garufi, A.; Henning, T.; Janson, M.; Keppler, M.; Matter, A.; Menard, F.; Stolker, T.; Zurlo, A.; Blanchard, P.; Maurel, D.; Moeller Nilsson, O.; Petit, C.; Roux, A.; Sevin, A.; Wildi, F. (EDP Sciences, 2020)
      Context. Shadows in scattered light images of protoplanetary disks are a common feature and support the presence of warps or misalignments between disk regions. These warps are possibly caused by an inclined (sub-)stellar ...
    • Spirals inside the millimeter cavity of transition disk SR 21 
      Muro Arena, G. A.; Ginski, C.; Dominik, C.; Benisty, M.; Pinilla, P.; Bohn, A. J.; Moldenhauer, T.; Kley, W.; Harsono, D.; Henning, T.; van Holstein, R. G.; Janson, M.; Keppler, M.; Ménard, F.; Pérez Muñoz, Laura M.; Stolker, T.; Tazzari, M.; Villenave, M.; Zurlo, A.; Petit, C.; Rigal, F.; Möller Nilsson, O.; Llored, M.; Moulin, T.; Rabou, P. (EDP Sciences, 2020)
    • The circumstellar disk HD 169142: gas, dust, and planets acting in concert? 
      Pohl, A.; Benisty, Myriam; Pinilla, P.; Ginski, C.; Zurlo, A. (IOP Publishing Ltd., 2017)
      HD 169142 is an excellent target for investigating signs of planet-disk interaction due to previous evidence of gap structures. We perform J-band (similar to 1.2 mu m) polarized intensity imaging of HD 169142 with VLT/SPHERE. ...
    • The search for disks or planetary objects around directly imaged companions: A candidate around DH Tau B. 
      Lazzoni, C.; Zurlo, A.; Desidera, S.; Mesa, D.; Fontanive, C.; Bonavita, M.; Ertel, S.; Rice, K.; Vigan, A.; Boccaletti, A.; Bonnefoy, M.; Chauvin, Gaël; Delorme, P.; Gratton, R.; Houllé, M.; Maire, A.L.; Meyer, M.; Rickman, E.; Spalding, E. A.; Asensio Torres, R.; Langlois, M.; Müller, A.; Baudino, J L.; Beuzit, J. L.; Biller, B.; Brandner, W.; Buenzli, E.; Cantalloube, F.; Cheetham, A.; Cudel, M.; Feldt, M.; Galicher, R.; Janson, M.; Hagelberg, J.; Henning, T.; Kasper, M.; Keppler, M.; Lagrange, A. M; Lannier, J.; LeCoroller, H.; Mouillet, D.; Peretti, S.; Perrot, C.; Salter, G.; Samland, M.; Schmidt, T.; Sissa, E.; Wildi, F. (EDP Science, 2020)
      Context. In recent decades, thousands of substellar companions have been discovered with both indirect and direct methods of detection. While the majority of the sample is populated by objects discovered using radial ...
    • The widest Hα survey of accreting protoplanets around nearby transition disks 
      Zurlo, A.; Cugno, G.; Montesinos, M.; Peréz, S.; Cánovas, H.; Casassus Montero, Simón; Christiaens, V.; Cieza, L.; Huelamo, N. (EDP Sciences, 2020)