Browsing by Author "Chauvin, Gael"

Now showing items 1-11 of 11

    • A multiwavelength analysis of the spiral arms in the protoplanetary disk around WaOph 6 
      Brown Sevilla, S. B.; Keppler, M.; Barraza Alfaro, M.; Fuksman, J. D. Melon; Kurtovic, N.; Pinilla, P.; Feldt, M.; Brandner, W.; Ginski, C.; Henning, Th; Klahr, H.; Asensio Torres, R.; Cantalloube, F.; Garufi, A.; van Holstein, R. G.; Langlois, M.; Menard, F.; Rickman, E.; Benisty, Myriam; Chauvin, Gael; Zurlo, A.; Weber, P.; Pavlov, A.; Ramos, J.; Rochat, S.; Roelfsema, R. (EDP Sciences, 2021)
      Context. In recent years, protoplanetary disks with spiral structures have been detected in scattered light, millimeter continuum, and CO gas emission. The mechanisms causing these structures are still under debate. A ...
    • A scaled-up planetary system around a supernova progenitor 
      Squicciarini, V.; Gratton, R.; Janson, M.; Mamajek, Eric E.; Chauvin, Gael; Delorme, P.; Langlois, M.; Vigan, A.; Ringqvist, S. C.; Meeus, G.; Reffert, S.; Kenworthy, M.; Meyer, M. R.; Bonnefoy, M.; Bonavita, M.; Mesa, M.; Samland, M.; Desidera, S.; D’Orazi, V.; Engler, N.; Alecian, E.; Miglio, A.; Henning, T.; Quanz, S. P.; Mayer, L.; Flasseur, O.; Marleau, G. D. (EDP Sciences, 2022)
      Context. Virtually all known exoplanets reside around stars with M < 2:3 M either due to the rapid evaporation of the protostellar disks or to selection effects impeding detections around more massive stellar hosts. Aims. ...
    • A search of massive companions around young stars with VLT/NaCo 
      Jorquera Contreras, Sebastián Andrés (Universidad de Chile, 2021)
      En los últimos años, observaciones obtenidas con el Telescopio ALMA han revelado una alta abundancia y ubicuidad de subestructuras en discos de formación planetaria, siendo los más comunes una combinación de anillos ...
    • A SOPHIE RV search for giant planets around young nearby stars (YNS) A combination with the HARPS YNS survey 
      Grandjean, A.; Lagrange, A.M.; Meunier, N.; Rubini, P.; Desidera, S.; Galland, F.; Borgnie, S.; Zicher, N.; Messina, S.; Chauvin, Gael; Sterzik, M.; Pantoja, B. (EDP Sciences, 2021)
      Context. The search of close (a less than or similar to 5 au) giant planet (GP) companions with radial velocity (RV) around young stars and the estimate of their occurrence rates is important to constrain the migration ...
    • A wide-orbit giant planet in the high-mass b Centauri binary system 
      Janson, Markus; Gratton, Raffaele; Rodet, Laetitia; Vigan, Arthur; Bonnefoy, Mickael; Delorme, Philippe; Mamajek, Eric E.; Reffert, Sabine; Stock, Lukas; Marleau, Gabriel Dominique; Langlois, Maud; Chauvin, Gael; Desidera, Silvano; Ringqvist, Simon; Mayer, Lucio; Viswanath, Gayathri; Squicciarini, Vito; Meyer, Michael R.; Samland, Matthias; Petrus, Simon; Helled, Ravit; Kenworthy, Matthew A.; Quanz, Sascha P.; Biller, Beth; Henning, Thomas; Mesa, Dino; Engler, Natalia; Carson, Joseph C. (Nature, 2021)
      Planet formation occurs around a wide range of stellar masses and stellar system architectures(1). An improved understanding of the formation process can be achieved by studying it across the full parameter space, particularly ...
    • Atmospheres of objects on the upper planetary-mass limit as a clue to distinguish between formation mechanisms 
      Palma Bifani, Paulina (Universidad de Chile, 2022)
      La difusa línea divisoria entre las enanas cafés y los exoplanetas gigantes ha despertado la curiosidad de astrónomos porque representan dos poblaciones de objetos astrofísicos, fundamentales para la comprensión de la ...
    • Bayes-based orbital parameters estimation in triple hierarchical stellar systems 
      Villegas Mardones, Constanza Luisa (Universidad de Chile, 2020)
      En la estimación de parámetros orbitales, un sistema estelar triple jerárquico puede ser visto como dos sistemas binarios combinados. Este proceso de inferencia es muy desafiante, dada la alta dimensionalidad del espacio ...
    • Lessons learned from SPHERE for the astrometric strategy of the next generation of exoplanet imaging instruments 
      Maire, Anne-Lise; Langlois, Maud; Delorme, Philippe; Chauvin, Gael; Gratton, Raffaele; Vigan, Arthur; Girard, Julien H.; Wahhaj, Zahed; Pott, Jorg-Uwe; Burtscher, Leonard; Boccaletti, Anthony; Carlotti, Alexis; Henning, Thomas; Kenworthy, Matthew A.; Kervella, Pierre; Rickman, Emily L.; Schmidt, Tobias O. B. (Spie-Soc Photo-Optical Instrumentation Engineers, 2021)
      Measuring the orbits of directly imaged exoplanets requires precise astrometry at the milliarcsec level over long periods of time due to their wide separation to the stars (greater than or similar to 10 au) and long orbital ...
    • Medium-resolution spectrum of the exoplanet HIP 65426 b 
      Petrus, S.; Bonnefoy, Mickael; Chauvin, Gael; Charnay, B.; Marleau, G.D.; Gratton, R.; Lagrange, A.M.; Rameau, J.; Mordasini, C.; Nowak, M.; Delorme, P.; Boccaletti, A.; Carlotti, A.; Houllé, M.; Vigan, A.; Allard, F.; Desidera, S.; D’Orazi, V.; Hoeijmakers, H.J.; Wyttenbach, A.; Lavie, B. (EDP Sciences, 2021)
      Medium-resolution integral-field spectrographs (IFS) coupled with adaptive-optics such as Keck/OSIRIS, VLT/MUSE, or SINFONI are appearing as a new avenue for enhancing the detection and characterization capabilities of ...
    • Perturbers: SPHERE detection limits to planetary-mass companions in protoplanetary disks 
      Asensio Torres, R.; Henning, Th; Cantalloube, F.; Pinilla, P.; Mesa, D.; Garufi, A.; Jorquera, S.; Gratton, R.; Chauvin, Gael; Szulagyi, J.; van Boekel, R.; Dong, R.; Marleau, G-D; Benisty, Myriam; Villenave, M.; Bergez Casalou, C.; Desgrange, C.; Janson, M.; Keppler, M.; Langlois, M.; Menard, F.; Rickman, E.; Stolker, T.; Feldt, M.; Fusco, T.; Gluck, L.; Pavlov, A.; Ramos, J. (EDP Sciences, 2021)
      The detection of a wide range of substructures such as rings, cavities, and spirals has become a common outcome of high spatial resolution imaging of protoplanetary disks, both in the near-infrared scattered light and in ...
    • Probing the innermost region of the AU microscopii debris disc 
      Gallenne, Alexandre; Desgrange, C.; Milli, J.; Sánchez Bermúdez, J.; Chauvin, Gael; Kraus, S.; Girard, J. H.; Boccaletti, A. (EDP Sciences, 2022)
      Context. AU Mic is a young and nearby M-dwarf star harbouring a circumstellar debris disc and one recently discovered planet on an eight-day orbit. Large-scale structures within the disc were also discovered and are moving ...