Zobrazeno 1 - 10
of 315
pro vyhledávání: '"Wahhaj, Z."'
Autor:
Wahhaj, Z., Benisty, M., Ginski, C., Swastik, C., Arora, S., van Holstein, R. G., De Rosa, R. J., Yang, B., Bae, J., Ren, B.
Publikováno v:
A&A 687, A257 (2024)
Context. Most ground-based planet search direct imaging campaigns use angular differential imaging, which distorts the signal from extended sources like protoplanetary disks. In the case PDS 70, a young system with two planets found within the cavity
Externí odkaz:
http://arxiv.org/abs/2404.11641
Autor:
Garufi, A., Ginski, C., van Holstein, R. G., Benisty, M., Manara, C. F., Pérez, S., Pinilla, P., Ribas, Á., Weber, P., Williams, J., Cieza, L., Dominik, C., Facchini, S., Huang, J., Zurlo, A., Bae, J., Hagelberg, J., Henning, Th., Hogerheijde, M. R., Janson, M., Ménard, F., Messina, S., Meyer, M. R., Pinte, C., Quanz, S. P., Rigliaco, E., Roccatagliata, V., Schmid, H. M., Szulágyi, J., van Boekel, R., Wahhaj, Z., Antichi, J., Baruffolo, A., Moulin, T.
The sample of planet-forming disks observed by high-contrast imaging campaigns over the last decade is mature enough to enable the demographical analysis of individual star-forming regions. We present the full census of Taurus sources with VLT/SPHERE
Externí odkaz:
http://arxiv.org/abs/2403.02158
Autor:
Ginski, C., Garufi, A., Benisty, M., Tazaki, R., Dominik, C., Ribas, A., Engler, N., Birnstiel, T., Chauvin, G., Columba, G., Facchini, S., Goncharov, A., Hagelberg, J., Henning, T., Hogerheijde, M., van Holstein, R. G., Huang, J., Muto, T., Pinilla, P., Kanagawa, K., Kim, S., Kurtovic, N., Langlois, M., Manara, C., Milli, J., Momose, M., Orihara, R., Pawellek, N., Pinte, C., Rab, C., Schmidt, T. O. B., Snik, F., Wahhaj, Z., Williams, J., Zurlo, A.
We used VLT/SPHERE to observe 20 systems in the Cha I cloud in polarized scattered light in the near-infrared. We combined the scattered light observations with existing literature data on stellar properties and with archival ALMA continuum data to s
Externí odkaz:
http://arxiv.org/abs/2403.02149
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., Hibon, P., Christiaens, V., Choquet, É., Bonnefoy, M., Kennedy, G. M., Wyatt, M. C., Absil, O., Gómez González, C. A., del Burgo, C., Matrà, L., Augereau, J.-C., Boccaletti, A., Delacroix, C., Ertel, S., Dent, W. R. F., Forsberg, P., Fusco, T., Girard, J. H., Habraken, S., Huby, E., Karlsson, M., Lagrange, A.-M., Mawet, D., Mouillet, D., Perrin, M., Pinte, C., Pueyo, L., Reyes, C., Soummer, R., Surdej, J., Tarricq, Y., Wahhaj, Z.
Aims. Uncovering the ingredients and the architecture of planetary systems is a very active field of research that has fuelled many new theories on giant planet formation, migration, composition, and interaction with the circumstellar environment. We
Externí odkaz:
http://hdl.handle.net/10150/622878
http://arizona.openrepository.com/arizona/handle/10150/622878
http://arizona.openrepository.com/arizona/handle/10150/622878
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
Context: High contrast imaging is a powerful technique to detect and characterize planetary companions at large orbital separations from their parent stars. Aims: We aim at studying the limiting magnitude of the VLT/SPHERE Adaptive Optics system and
Externí odkaz:
http://arxiv.org/abs/2204.11746
Autor:
Vigan, A., Dohlen, K., N'Diaye, M., Cantalloube, F., Girard, J., Milli, J., Sauvage, J. -F., Wahhaj, Z., Zins, G., Beuzit, J. -L., Caillat, A., Costille, A., Merrer, J. Le, Mouillet, D., Tourenq, S.
Publikováno v:
A&A 660, A140 (2022)
Coronagraphic imaging of exoplanets using ground-based instruments on large telescopes is intrinsically limited by speckles induced by uncorrected aberrations. These aberrations originate from the imperfect correction of the atmosphere by an extreme
Externí odkaz:
http://arxiv.org/abs/2202.10470
Autor:
Maire, A. -L., Langlois, M., Delorme, P., Chauvin, G., Gratton, R., Vigan, A., Girard, J. H., Wahhaj, Z., Pott, J. -U., Burtscher, L., Boccaletti, A., Carlotti, A., Henning, T., Kenworthy, M. A., Kervella, P., Rickman, E. L., Schmidt, T. O. B.
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 ($\gtrsim$10 au) and long orbital period ($\gtrsim$20 yr). To reach this chall
Externí odkaz:
http://arxiv.org/abs/2107.14341
Autor:
Langlois, M., Gratton, R., Lagrange, A. -M., Delorme, P., Boccaletti, A., Bonnefoy, M., Maire, A. -L., Mesa, D., Chauvin, G., Desidera, S., Vigan, A., Cheetham, A., Hagelberg, J., Feldt, M., Meyer, M., Rubini, P., Coroller, H. Le, Cantalloube, F., Biller, B., Bonavita, M., Bhowmik, T., Brandner, W., Daemgen, S., D'Orazi, V., Flasseur, O., Fontanive, C., Galicher, R., Girard, J., Janin-Potiron, P., Janson, M., Keppler, M., Kopytova, T., Lagadec, E., Lannier, J., Lazzoni, C., Ligi, R., Meunier, N., Perreti, A., Perrot, C., Rodet, L., Romero, C., Rouan, D., Samland, M., Salter, G., Sissa, E., Schmidt, T., Zurlo, A., Mouillet, D., Denis, L., Thiebaut, E., Milli, J., Wahhaj, Z., Beuzit, J. -L., Dominik, C., Henning, Th., Menard, F., Muller, A., Schmid, H. M., Turatto, M., Udry, S., Abe, L., Antichi, J., Allard, F., Baruffolo, A., Baudoz, P., Baudrand, J., Bazzon, A., Blanchard, P., Carbillet, M., Carle, M., Cascone, E., Charton, J., Claudi, R., Costille, A., De Caprio, V., Delboulbe, A., Dohlen, K., Fantinel, D., Feautrier, P., Fusco, T., Gigan, P., Giro, E., Gisler, D., Gluck, L., Gry, C., Hubin, N., Hugot, E., Jaquet, M., Kasper, M., Mignant, D. Le, Llored, M., Madec, F., Magnard, Y., Martinez, P., Maurel, D., Messina, S., Moller-Nilsson, O., Mugnier, L., Moulin, T., Origne, 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., Suarez, M., Weber, L., Wildi, F., Rickman, E.
Publikováno v:
A&A 651, A71 (2021)
Over the past decades, direct imaging has confirmed the existence of substellar companions (exoplanets or brown dwarfs) on wide orbits (>10 au) from their host stars. To understand their formation and evolution mechanisms, we have initiated in 2015 t
Externí odkaz:
http://arxiv.org/abs/2103.03976