Zobrazeno 1 - 10
of 424
pro vyhledávání: '"Galicher, R."'
Autor:
Ligi, R., Vigan, A., Gratton, R., de Boer, J., Benisty, M., Boccaletti, A., Quanz, S. P., Meyer, M., Ginski, C., Sissa, E., Gry, C., Henning, T., Beuzit, J.-L., Biller, B., Bonnefoy, M., Chauvin, G., Cheetham, A. C., Cudel, M., Delorme, P., Desidera, S., Feldt, M., Galicher, R., Girard, J., Janson, M., Kasper, M., Kopytova, T., Lagrange, A.-M., Langlois, M., Lecoroller, H., Maire, A.-L., Ménard, F., Mesa, D., Peretti, S., Perrot, C., Pinilla, P., Pohl, A., Rouan, D., Stolker, T., Samland, M., Wahhaj, Z., Wildi, F., Zurlo, A., Buey, T., Fantinel, D., Fusco, T., Jaquet, M., Moulin, T., Ramos, J., Suarez, M., Weber, L.
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). We detect several bright bl
Externí odkaz:
http://hdl.handle.net/10150/627059
http://arizona.openrepository.com/arizona/handle/10150/627059
http://arizona.openrepository.com/arizona/handle/10150/627059
Autor:
Milli, J., Vigan, A., Mouillet, D., Lagrange, A.-M., Augereau, J.-C., Pinte, C., Mawet, D., Schmid, H. M., Boccaletti, A., Matrà, L., Kral, Q., Ertel, S., Chauvin, G., Bazzon, A., Ménard, F., Beuzit, J.-L., Thalmann, C., Dominik, C., Feldt, M., Henning, T., Min, M., Girard, J. H., Galicher, R., Bonnefoy, M., Fusco, T., de Boer, J., Janson, M., Maire, A.-L., Mesa, D., Schlieder, J. E.
Context. HR4796A is surrounded by a debris disc, observed in scattered light as an inclined ring with a high surface brightness. Past observations have raised several questions. First, a strong brightness asymmetry detected in polarised reflected lig
Externí odkaz:
http://hdl.handle.net/10150/623201
http://arizona.openrepository.com/arizona/handle/10150/623201
http://arizona.openrepository.com/arizona/handle/10150/623201
Autor:
Galicher, R., Marois, C., Macintosh, B., Zuckerman, B., Barman, T., Konopacky, Q., Song, I., Patience, J., Lafrenière, D., Doyon, R., Nielsen, E. L.
Context. Radial velocity and transit methods are effective for the study of short orbital period exoplanets but they hardly probe objects at large separations for which direct imaging can be used. Aims. We carried out the international deep planet su
Externí odkaz:
http://hdl.handle.net/10150/622797
http://arizona.openrepository.com/arizona/handle/10150/622797
http://arizona.openrepository.com/arizona/handle/10150/622797
Autor:
Konopacky, Q. M., Marois, C., Macintosh, B. A., Galicher, R., Barman, T. S., Metchev, S. A., Zuckerman, B.
We present new astrometric measurements from our ongoing monitoring campaign of the HR 8799 directly imaged planetary system. These new data points were obtained with NIRC2 on the W.M. Keck II 10 m telescope between 2009 and 2014. In addition, we pre
Externí odkaz:
http://hdl.handle.net/10150/621227
http://arizona.openrepository.com/arizona/handle/10150/621227
http://arizona.openrepository.com/arizona/handle/10150/621227
Autor:
Garufi, A., Quanz, S. P., Schmid, H. M., Mulders, G. D., Avenhaus, H., Boccaletti, A., Ginski, C., Langlois, M., Stolker, T., Augereau, J.-C., Benisty, M., Lopez, B., Dominik, C., Gratton, R., Henning, T., Janson, M., Ménard, F., Meyer, M. R., Pinte, C., Sissa, E., Vigan, A., Zurlo, A., Bazzon, A., Buenzli, E., Bonnefoy, M., Brandner, W., Chauvin, G., Cheetham, A., Cudel, M., Desidera, S., Feldt, M., Galicher, R., Kasper, M., Lagrange, A.-M., Lannier, J., Maire, A. L., Mesa, D., Mouillet, D., Peretti, S., Perrot, C., Salter, G., Wildi, F.
Context. The mechanisms governing planet formation are not fully understood. A new era of high-resolution imaging of protoplanetary disks has recently started, thanks to new instruments such as SPHERE, GPI, and ALMA. The planet formation process can
Externí odkaz:
http://hdl.handle.net/10150/614690
http://arizona.openrepository.com/arizona/handle/10150/614690
http://arizona.openrepository.com/arizona/handle/10150/614690
Autor:
Boccaletti, A., Chauvin, G., Wildi, F., Milli, J., Stadler, E., Diolaiti, E., Gratton, R., Vidal, F., Loupias, M., Langlois, M., Cantalloube, F., N'Diaye, M., Gratadour, D., Ferreira, F., Tallon, M., Mazoyer, J., Segransan, D., Mouillet, D., Beuzit, J. -L., Bonnefoy, M., Galicher, R., Vigan, A., Snellen, I., Feldt, M., Desidera, S., Rousseau, S., Baruffolo, A., Goulas, C., Baudoz, P., Bechet, C., Benisty, M., Bianco, A., Carry, B., Cascone, E., Charnay, B., Choquet, E., Christiaens, V., Cortecchia, F., de Caprio, V., De Rosa, A., Desgrange, C., D'Orazi, V., Douté, S., Frangiamore, M., Gendron, E., Ginski, C., Huby, E., Keller, C., Kulcsár, C., Landman, R., Lagarde, S., Lagadec, E., Lagrange, A. -M., Kasper, M. Lombini M., Ménard, F., Magnard, Y., Malaguti, G., Maurel, D., Mesa, D., Morgante, G., Pantin, E., Pichon, T., Potier, A., Rabou, P., Rochat, S., Terenzi, L., Thiébaut, E., Tallon-Bosc, I., Raynaud, H. -F., Rouan, D., Sevin, A., Schiavone, F., Schreiber, L., Zanutta, A.
SPHERE+ is a proposed upgrade of the SPHERE instrument at the VLT, which is intended to boost the current performances of detection and characterization for exoplanets and disks. SPHERE+ will also serve as a demonstrator for the future planet finder
Externí odkaz:
http://arxiv.org/abs/2209.02092
Autor:
Zurlo, A., Gozdziewski, K., Mesa, C. Lazzoni D., Nogueira, P., Desidera, S., Gratton, R., Marzari, F., Pinna, E., Chauvin, G., Delorme, P., Girard, J. H., Hagelberg, J., Henning, Th., Janson, M., Rickman, E., Kervella, P., Avenhaus, H., Bhowmik, T., Biller, B., Boccaletti, A., Bonaglia, M., Bonavita, M., Bonnefoy, M., Cantalloube, F., Cheetham, A., Claudi, R., D'Orazi, V., Feldt, M., Galicher, R., Ghose, E., Lagrange, A. -M., Langlois, M., Coroller, H. le, Ligi, R., Kasper, M., Maire, A. -L., Medard, F., Meyer, M., Peretti, S., Perrot, C., Puglisi, A. T., Rossi, F., Rothberg, B., Schmidt, T., Sissa, E., Vigan, A., Wahhaj, Z.
Publikováno v:
A&A 666, A133 (2022)
HR\,8799 is a young planetary system composed of 4 planets and a double debris belt. Being the first multi-planetary system discovered with the direct imaging technique, it has been observed extensively since 1998. This wide baseline of astrometric m
Externí odkaz:
http://arxiv.org/abs/2207.10684
Autor:
Mesa, D., Bonavita, M., Benatti, S., Gratton, R., Marino, S., Kervella, P., D'Orazi, V., Desidera, S., Henning, T., Janson, M., Langlois, M., Rickman, E., Vigan, A., Zurlo, A., Baudino, J. -L., Biller, B., Boccaletti, A., Bonnefoy, M., Brandner, W., Buenzli, E., Cantalloube, F., Fantinel, D., Fontanive, C., Galicher, R., Ginski, C., Girard, J., Hagelberg, J., Kopytova, T., Lazzoni, C., Coroller, H. Le, Ligi, R., Llored, M., Maire, A. -L., Mouillet, D., Perrot, C., Rochat, S., Romero, C., Rouan, D., Samland, M., Schmidt, T. O. B., Sissa, E., Wildi, F.
Aims. This work aims at constraining the masses and separations of potential substellar companions to five accelerating stars (HIP 1481, HIP 88399, HIP 96334, HIP 30314 and HIP 116063) using multiple data sets acquired with different techniques. Meth
Externí odkaz:
http://arxiv.org/abs/2206.12266
In-depth direct imaging and spectroscopic characterization of the young Solar System analog HD 95086
Autor:
Desgrange, C., Chauvin, G., Christiaens, V., Cantalloube, F., Lefranc, L. -X., Coroller, H. Le, Rubini, P., Otten, G. P. P. L., Beust, H., Bonavita, M., Delorme, P., Devinat, M., Gratton, R., Lagrange, A. -M., Langlois, M., Mesa, D., Milli, J., Szulágyi, J., Nowak, M., Rodet, L., Rojo, P., Petrus, S., Janson, M., Henning, T., Kral, Q., van Holstein, R. G., Ménard, F., Beuzit, J. -L., Biller, B., Boccaletti, A., Bonnefoy, M., Brown, S., Costille, A., Delboulbe, A., Desidera, S., D'Orazi, V., Feldt, M., Fusco, T., Galicher, R., Hagelberg, J., Lazzoni, C., Ligi, R., Maire, A. -L., Messina, S., Meyer, M., Potier, A., Ramos, J., Rouan, D., Schmidt, T., Vigan, A., Zurlo, A.
Publikováno v:
A&A 664, A139 (2022)
Context. HD 95086 is a young nearby Solar System analog hosting a giant exoplanet orbiting at 57 au from the star between an inner and outer debris belt. The existence of additional planets has been suggested as the mechanism that maintains the broad
Externí odkaz:
http://arxiv.org/abs/2206.00425
Autor:
Garufi, A., Dominik, C., Ginski, C., Benisty, M., van Holstein, R. G., Henning, Th., Pawellek, N., Pinte, C., Avenhaus, H., Facchini, S., Galicher, R., Gratton, R., Menard, F., Muro-Arena, G., Milli, J., Stolker, T., Vigan, A., Villenave, M., Moulin, T., Origne, A., Rigal, F., Sauvage, J. -F., Weber, L.
Publikováno v:
A&A 658, A137 (2022)
To date, nearly two hundred planet-forming disks have been imaged with high resolution. Our propensity to study bright and extended objects is however biasing our view of the disk demography. In this work, we contribute to alleviate this bias by anal
Externí odkaz:
http://arxiv.org/abs/2111.07856