Browsing by Author "Perrin, G."

Now showing items 1-6 of 6

    • The close circumstellar environment of Betelgeuse III. SPHERE/ZIMPOL imaging polarimetry in the visible 
      Kervella, Pierre; Lagadec, E.; Montarges, M.; Ridgway, S.; Chiavassa, A.; Haubois, X.; Schmid, H.; Langlois, M.; Gallenne, A.; Perrin, G. (EDP SCIENCES, 2016)
      The physical mechanism through which the outgoing material of massive red supergiants is accelerated above the escape velocity is unclear. Thanks to the transparency of its circumstellar envelope, the nearby red supergiant ...
    • The dust disk and companion of the nearby AGB star L-2 Puppis SPHERE/ZIMPOL polarimetric imaging at visible ... 
      Kervella, Pierre; Montargès, M.; Lagadec, E.; Ridgway, S. T.; Haubois, X.; Girard, J. H.; Ohnaka, K.; Perrin, G.; Gallenne, A. (ESO, 2015)
      The bright southern star L-2 Pup is a particularly prominent asymptotic giant branch (AGB) star, located at a distance of only 64 pc. We report new adaptive optics observations of L2 Pup at visible wavelengths with the ...
    • Resolving asymmetries along the pulsation cycle of the Mira star X Hydrae 
      Haubois, X.; Wittkowski, M.; Perrin, G.; Kervella, Pierre; Mérand, A.; Thiébaut, E.; Ridgway, S.; Ireland, M.; Scholz, M. (EDP Sciences, 2015)
      Context. The mass-loss process in Mira stars probably occurs in an asymmetric way where dust can form in inhomogeneous circumstellar molecular clumps. Following asymmetries along the pulsation cycle can give us clues about ...
    • The GRAVITY young stellar object survey VI. Mapping the variable inner disk of HD 163296 at sub-au scales 
      Sánchez Bermúdez, J.; Garatti, Caratti; García López, R.; Perraut, K.; Labadie, L.; Benisty, Myriam; Brandner, W.; Dougados, C.; García, P. J.; Henning, Th.; Klarmann, L.; Amorim, A.; Bauboeck, M.; Berger, J. P.; Le Bouquin, J. B.; Caselli, P.; Clenet, Y.; Du Foresto, V. Coude; De Zeeuw, P. T.; Drescher, A.; Duvert, G.; Eckart, A.; Eisenhauer, F.; Filho, M.; Gao, F.; Gendron, E.; Genzel, R.; Gillessen, S.; Grellmann, R.; Heissel, G.; Horrobin, M.; Hubert, Z.; Jiménez Rosales, A.; Jocou, L.; Kervella, P.; Lacour, S.; Lapeyrere, V.; Lena, P.; Ott, T.; Paumard, T.; Perrin, G.; Shimizu, T.; Stadler, J.; Straub, O.; Straubmeier, C.; Sturm, E.; van Dishoeck, E.; Vincent, F.; von Fellenberg, S. D.; Widmann, F.; Woillez, J. (EDP Sciences, 2021)
      Context. Protoplanetary disks drive some of the formation process (e.g., accretion, gas dissipation, formation of structures) of stars and planets. Understanding such physical processes is one of the most significant ...
    • The GRAVITY young stellar object survey VII. The inner dusty disks of T Tauri stars 
      Perraut, K.; Labadie, L.; Bouvier, J.; Menard, F.; Klarmann, L.; Dougados, C.; Benisty, Myriam; Berger, J-P; Bouarour, Y- I; Brandner, W.; Garatti, A. Caratti o; Caselli, P.; Zeeuw, P. T. de; García López, R.; Henning, T.; Sánchez Bermúdez, J.; Sousa, A.; Van Dishoeck, E.; Alecian, E.; Amorim, A.; Clenet, Y.; Davies, R.; Drescher, A.; Duvert, G.; Eckart, A.; Eisenhauer, F.; Foerster Schreiber, N. M.; García, P.; Gendron, E.; Genzel, R.; Gillessen, S.; Grellmann, R.; Heissel, G.; Hippler, S.; Horrobin, M.; Hubert, Z.; Jocou, L.; Kervella, P.; Lacour, S.; Lapeyrere, V.; Le Bouquin, J-B; Lena, P.; Lutz, D.; Ott, T.; Paumard, T.; Perrin, G.; Scheithauer, S.; Shangguan, J.; Shimizu, T.; Stadler, J.; Straub, O.; Straubmeier, C.; Sturm, E.; Tacconi, L.; Vincent, F.; Von Fellenberg, S.; Widmann, F. (EDP Sciences, 2021)
      Context. T Tauri stars are surrounded by dust and gas disks. As material reservoirs from which matter is accreted onto the central star and planets are built, these protoplanetary disks play a central role in star and ...
    • The GRAVITY young stellar object survey: IV. The CO overtone emission in 51 Oph at sub-au scales 
      Koutoulaki, M.; García López, R.; Natta, A.; Fedriani, R.; Garatti, A. Caratti O.; Ray, T. P.; Coffey, D.; Brandner, W.; Dougados, C.; García, P. J. V.; Klarmann, L.; Labadie, L.; Perraut, K.; Sánchez Bermúdez, J.; Lin, C. C.; Amorim, A.; Bauböck, M.; Benisty, Myriam; Berger, J. P.; Buron, A.; Caselli, P.; Clénet, Y.; Coudé Du Foresto, V.; De Zeeuw, P. T.; Duvert, G.; De Wit, W.; Eckart, A.; Eisenhauer, F.; Filho, M.; Gao, F.; Gendron, E.; Genzel, R.; Gillessen, S.; Grellmann, R.; Habibi, M.; Haubois, X.; Haussmann, F.; Henning, T.; Hippler, S.; Hubert, Z.; Horrobin, M.; Jiménez Rosales, A.; Jocou, L.; Kervella, P.; Kolb, J.; Lacour, S.; Le Bouquin, J. B.; Léna, P.; Linz, H.; Ott, T.; Paumard, T.; Perrin, G.; Pfuhl, O.; Ramírez Tannus, M. C.; Rau, C.; Rousset, G.; Scheithauer, S.; Shangguan, J.; Stadler, J.; Straub, O.; Straubmeier, C.; Sturm, E.; Van Dishoeck, E.; Vincent, F.; Von Fellenberg, S.; Widmann, F.; Wieprecht, E.; Wiest, M.; Wiezorrek, E.; Yazici, S.; Zins, G. (EDP Sciences, 2021)
      Context. 51 Oph is a Herbig Ae/Be star that exhibits strong near-infrared CO ro-vibrational emission at 2.3 mu m, most likely originating in the innermost regions of a circumstellar disc.Aims. We aim to obtain the physical ...