High contrast at short separation with VLTI/GRAVITY: Bringing Gaia companions to light

Autor: Pourré, N., Winterhalder, T. O., Bouquin, J. -B. Le, Lacour, S., Bidot, A., Nowak, M., Maire, A. -L., Mouillet, D., Babusiaux, C., Woillez, J., Abuter, R., Amorim, A., Asensio-Torres, R., Balmer, W. O., Benisty, M., Berger, J. -P., Beust, H., Blunt, S., Boccaletti, A., Bonnefoy, M., Bonnet, H., Bordoni, M. S., Bourdarot, G., Brandner, W., Cantalloube, F., Caselli, P., Charnay, B., Chauvin, G., Chavez, A., Choquet, E., Christiaens, V., Clénet, Y., Foresto, V. Coudé du, Cridland, A., Davies, R., Defrère, D., Dembet, R., Dexter, J., Drescher, A., Duvert, G., Eckart, A., Eisenhauer, F., Schreiber, N. M. Föster, Garcia, P., Lopez, R. Garcia, Gendron, E., Genzel, R., Gillessen, S., Girard, J. H., Gonte, F., Grant, S., Haubois, X., Heißel, G., Henning, Th., Hinkley, S., Hippler, S., Hönig, S. F., Houllé, M., Hubert, Z., Jocou, L., Kammerer, J., Kenworthy, M., Keppler, M., Kervella, P., Kreidberg, L., Kurtovic, N. T., Lagrange, A. -M., Lapeyrère, V., Lutz, D., Mang, F., Marleau, G. -D., Mérand, A., Millour, F., Mollière, P., Monnier, J. D., Mordasini, C., Nasedkin, E., Oberti, S., Ott, T., Otten, G. P. L., Paladini, C., Paumard, T., Perraut, K., Perrin, G., Pfuhl, O., Pueyo, L., Ribeiro, D. C., Rickman, E., Rustamkulov, Z., Shangguan, J., Shimizu, T., Sing, D., Soulez, F., Stadler, J., Stolker, T., Straub, O., Straubmeier, C., Sturm, E., Sykes, C., Tacconi, L. J., van Dishoeck, E. F., Vigan, A., Vincent, F., von Fellenberg, S. D., Wang, J., Widmann, F., Yazici, S., Collaboration, the GRAVITY, Abad, J. A., Carpentier, E. Aller, Alonso, J., Andolfato, L., Barriga, P., Beuzit, J. -L., Bourget, P., Brast, R., Caniguante, L., Cottalorda, E., Darré, P., Delabre, B., Delboulbé, A., Delplancke-Ströbele, F., Donaldson, R., Dorn, R., Dupuy, C., Egner, S., Fischer, G., Frank, C., Fuenteseca, E., Gitton, P., Guerlet, T., Guieu, S., Gutierrez, P., Haguenauer, P., Haimerl, A., Heritier, C. T., Huber, S., Hubin, N., Jolley, P., Kirchbauer, J. -P., Kolb, J., Kosmalski, J., Krempl, P., Louarn, M. Le, Lilley, P., Lopez, B., Magnard, Y., Mclay, S., Meilland, A., Meister, A., Moulin, T., Pasquini, L., Paufique, J., Percheron, I., Pettazzi, L., Phan, D., Pirani, W., Quentin, J., Rakich, A., Ridings, R., Reyes, J., Rochat, S., Schmid, C., Schuhler, N., Shchekaturov, P., Seidel, M., Soenke, C., Stadler, E., Stephan, C., Suárez, M., Todorovic, M., Valdes, G., Verinaud, C., Zins, G., Zúñiga-Fernández, S., Collaboration, the NAOMI

Since 2019, GRAVITY has provided direct observations of giant planets and brown dwarfs at separations of down to 95 mas from the host star. Some of these observations have provided the first direct confirmation of companions previously detected by in

Externí odkaz: http://arxiv.org/abs/2406.04003

MAD Adaptive Optics Imaging of High Luminosity Quasars: A Pilot Project

Autor: Liuzzo, E., Falomo, R., Paiano, S., Treves, A., Uslenghi, M., Arcidiacono, C., Baruffolo, A., Diolaiti, E., Farinato, J., Lombini, M., Moretti, A., Ragazzoni, R., Brast, R., Donaldson, R., Kolb, J., Marchetti, E., Tordo, S.

We present near-IR images of five luminous quasars at z~2 and one at z~4 obtained with an experimental adaptive optics instrument at the ESO Very Large Telescope. The observations are part of a program aimed at demonstrating the capabilities of multi

Externí odkaz: http://arxiv.org/abs/1605.08406

The jet of the BL Lacertae object PKS 2201+044: MAD near-IR adaptive optics observations and comparison with optical, radio and X-ray data

Autor: Liuzzo, E., Falomo, R., Treves, A., Donato, D., Sambruna, M., Arcidiacono, C., Giovannini, G., Farinato, J., Moretti, A., Ragazzoni, R., Diolaiti, E., Lombini, M., Brast, R., Donaldson, R., Kolb, J., Marchetti, E., Tordo, S.

Relativistic jets are a common feature of radio loud active galactic nuclei. Multifrequency observations are a unique tool to constrain their physics. We report on a detailed study of the properties of the jet of the nearby BL Lac object PKS 2201+044

Externí odkaz: http://arxiv.org/abs/1012.3620

Resolving Stellar Populations outside the Local Group: MAD observations of UKS2323-326

Autor: Gullieuszik, M., Greggio, L., Held, E. V., Moretti, A., Arcidiacono, C., Bagnara, P., Baruffolo, A., Diolaiti, E., Falomo, R., Farinato, J., Lombini, M., Ragazzoni, R., Brast, R., Donaldson, R., Kolb, J., Marchetti, E., Tordo, S.

We present a study aimed at deriving constraints on star formation at intermediate ages from the evolved stellar populations in the dwarf irregular galaxy UKS2323-326. These observations were also intended to demonstrate the scientific capabilities o

Externí odkaz: http://arxiv.org/abs/0803.3728

MACAO-CRIRES, a step towards high-resolution spectroscopy

Autor: Paufique, J., Biereichel, P., Donaldson, R., Delabre, B., Fedrigo, E., Franza, F., Gigan, P., Gojak, D., Hubin, N., Kasper, M., Kaeufl, U., Lizon, J-L., Oberti, S., Pirard, J-F., Pozna, E., Santos, J., Stroebele, S.

High resolution spectroscopy made an important step ahead 10 years ago, leading for example to the discovery of numerous exoplanets. But the IR did not benefit from this improvement until very recently. CRIRES will provide a dramatic improvement in t

Externí odkaz: http://arxiv.org/abs/astro-ph/0608011