Zobrazeno 1 - 10
of 339
pro vyhledávání: '"Defrère P"'
Autor:
Cesario, Lorenzo, Lichtenberg, Tim, Alei, Eleonora, Carrión-González, Óscar, Dannert, Felix A., Defrère, Denis, Ertel, Steve, Fortier, Andrea, Muñoz, A. García, Glauser, Adrian M., Hansen, Jonah T., Helled, Ravit, Huber, Philipp A., Ireland, Michael J., Kammerer, Jens, Laugier, Romain, Lillo-Box, Jorge, Menti, Franziska, Meyer, Michael R., Noack, Lena, Quanz, Sascha P., Quirrenbach, Andreas, Rugheimer, Sarah, van der Tak, Floris, Wang, Haiyang S., Anger, Marius, Balsalobre-Ruza, Olga, Bhattarai, Surendra, Braam, Marrick, Castro-González, Amadeo, Cockell, Charles S., Constantinou, Tereza, Cugno, Gabriele, Davoult, Jeanne, Güdel, Manuel, Hernitschek, Nina, Hinkley, Sasha, Itoh, Satoshi, Janson, Markus, Johansen, Anders, Jones, Hugh R. A., Kane, Stephen R., van Kempen, Tim A., Kislyakova, Kristina G., Korth, Judith, Kovacevic, Andjelka B., Kraus, Stefan, Kuiper, Rolf, Mathew, Joice, Matsuo, Taro, Miguel, Yamila, Min, Michiel, Navarro, Ramon, Ramirez, Ramses M., Rauer, Heike, Ricketti, Berke Vow, Romagnolo, Amedeo, Schlecker, Martin, Sneed, Evan L., Squicciarini, Vito, Stassun, Keivan G., Tamura, Motohide, Viudez-Moreiras, Daniel, Wordsworth, Robin D., Collaboration, the LIFE
Publikováno v:
A&A 692, A172 (2024)
The increased brightness temperature of young rocky protoplanets during their magma ocean epoch makes them potentially amenable to atmospheric characterization to distances from the solar system far greater than thermally equilibrated terrestrial exo
Externí odkaz:
http://arxiv.org/abs/2410.13457
Autor:
Berdeu, Anthony, Bouquin, Jean-Baptiste Le, Mella, Guillaume, Bourgès, Laurent, Berger, Jean-Philippe, Bourdarot, Guillaume, Paumard, Thibaut, Eisenhauer, Frank, Straubmeier, Christian, Garcia, Paulo, Hönig, Sebastian, Millour, Florentin, Kreidberg, Laura, Defrère, Denis, Soulez, Ferréol, Shimizu, Taro
Publikováno v:
Adaptive Optics Systems IX, Jun 2024, Yokohama, France. pp.199
In the context of the GRAVITY+ upgrade, the adaptive optics (AO) systems of the GRAVITY interferometer are undergoing a major lifting. The current CILAS deformable mirrors (DM, 90 actuators) will be replaced by ALPAO kilo-DMs (43x43, 1432 actuators).
Externí odkaz:
http://arxiv.org/abs/2410.08563
Autor:
Berdeu, Anthony, Bonnet, Henri, Bouquin, Jean-Baptiste Le, Kolb, Johann, Bourdarot, Guillaume, Berio, Philippe, Paumard, Thibaut, Eisenhauer, Frank, Straubmeier, Christian, Garcia, Paulo, Hönig, Sebastian, Millour, Florentin, Kreidberg, Laura, Defrère, Denis, Soulez, Ferréol, Mourard, Denis, Schaefer, Gail, Anugu, Narsireddy
Performances of an adaptive optics (AO) system are directly linked with the quality of its alignment. During the instrument calibration, having open loop fast tools with a large capture range are necessary to quickly assess the system misalignment an
Externí odkaz:
http://arxiv.org/abs/2410.06569
Autor:
Wu, Zexuan, Dong, Subo, Mérand, A., Kochanek, Christopher S., Mróz, Przemek, Shangguan, Jinyi, Christie, Grant, Tan, Thiam-Guan, Bensby, Thomas, Bland-Hawthorn, Joss, Buder, Sven, Eisenhauer, Frank, Gould, Andrew P., Kos, Janez, Natusch, Tim, Sharma, Sanjib, Udalski, Andrzej, Woillez, J., Buckley, David A. H., Thompson, I. B., Dayem, Karim Abd El, Berdeu, Anthony, Berger, Jean-Philippe, Bourdarot, Guillaume, Brandner, Wolfgang, Davies, Richard I., Defrère, Denis, Dougados, Catherine, Drescher, Antonia, Eckart, Andreas, Fabricius, Maximilian, Feuchtgruber, Helmut, Schreiber, Natascha M. Förster, Garcia, Paulo, Genzel, Reinhard, Gillessen, Stefan, Heißel, Gernot, Hönig, Sebastian, Houlle, Mathis, Kervella, Pierre, Kreidberg, Laura, Lacour, Sylvestre, Lai, Olivier, Laugier, Romain, Bouquin, Jean-Baptiste Le, Leftley, James, Lopez, Bruno, Lutz, Dieter, Mang, Felix, Millour, Florentin, Montargès, Miguel, Nowacki, Hugo, Nowak, Mathias, Ott, Thomas, Paumard, Thibaut, Perraut, Karine, Perrin, Guy, Petrov, Romain, Petrucci, Pierre-Olivier, Pourre, Nicolas, Rabien, Sebastian, Ribeiro, Diogo C., Robbe-Dubois, Sylvie, Bordoni, Matteo Sadun, Santos, Daryl, Sauter, Jonas, Scigliuto, Jules, Shimizu, Taro T., Straubmeier, Christian, Sturm, Eckhard, Subroweit, Matthias, Sykes, Calvin, Tacconi, Linda, Vincent, Frédéric, Widmann, Felix
We resolve the multiple images of the binary-lens microlensing event ASASSN-22av using the GRAVITY instrument of the Very Large Telescope Interferometer (VLTI). The light curves show weak binary-lens perturbations, complicating the analysis, but the
Externí odkaz:
http://arxiv.org/abs/2409.13015
Autor:
Mroz, P., Dong, S., Merand, A., Shangguan, J., Woillez, J., Gould, A., Udalski, A., Eisenhauer, F., Ryu, Y. -H., Wu, Z., Liu, Z., Yang, H., Bourdarot, G., Defrere, D., Drescher, A., Fabricius, M., Garcia, P., Genzel, R., Gillessen, S., Honig, S. F., Kreidberg, L., Bouquin, J. -B. Le, Lutz, D., Millour, F., Ott, T., Paumard, T., Sauter, J., Shimizu, T. T., Straubmeier, C., Subroweit, M., Widmann, F., Szymanski, M. K., Soszynski, I., Pietrukowicz, P., Kozlowski, S., Poleski, R., Skowron, J., Ulaczyk, K., Gromadzki, M., Rybicki, K., Iwanek, P., Wrona, M., Mroz, M. J, Albrow, M. D., Chung, S. -J., Han, C., Hwang, K. -H., Jung, Y. K., Shin, I. -G., Shvartzvald, Y., Yee, J. C., Zang, W., Cha, S. -M., Kim, D. -J., Kim, S. -L., Lee, C. -U., Lee, D. -J., Lee, Y., Park, B. -G., Pogge, R. W.
Interferometric observations of gravitational microlensing events offer an opportunity for precise, efficient, and direct mass and distance measurements of lensing objects, especially those of isolated neutron stars and black holes. However, such obs
Externí odkaz:
http://arxiv.org/abs/2409.12227
Autor:
Bourdarot, G., Eisenhauer, F., Yazıcı, S., Feuchtgruber, H., Bouquin, J-B Le, Hartl, M., Rau, C., Graf, J., More, N., Wieprecht, E., Haussmann, F., Widmann, F., Lutz, D., Genzel, R., Gonte, F., Oberti, S., Kolb, J., Woillez, J., Bonnet, H., Schuppe, D., Brara, A., Hartwig, J., Goldbrunner, A., Furchtsam, C., Soller, F., Czempiel, S., Eibl, J., Huber, D., Uysal, S., Treffler, I., Ozdemir, H., Gopinatha, V., Bourget, P., Berdeu, A., Gillessen, S., Ott, T., Berio, P., Boebion, O., Millour, F., Dembet, R., Edouard, C., Gomes, T., Shimizu, T., Drescher, A., Fabricius, M., Shangguan, J., Lagarde, S., Robbe-Dubois, S., Allouche, F., Nowacki, H., Defrere, D., Garcia, P. J. V., Hoenig, S., Kreidbergg, L., Paumard, T., Straubmeier, C.
Publikováno v:
SPIE Proceedings, Yokohama 2024
We present the Wavefront Sensor units of the Gravity Plus Adaptive Optics (GPAO) system, which will equip all 8m class telescopes of the VLTI and is an instrumental part of the GRAVITY+ project. It includes two modules for each Wavefront Sensor unit:
Externí odkaz:
http://arxiv.org/abs/2409.08438
Autor:
Laugier, Romain, Woillez, Julien, Defrère, Denis, Courtney-Barrer, Benjamin, Salman, Muhammad, Sedghi, Babak, Abuter, Roberto, Bigioli, Azzurra, Fabricius, Maximilian, Eisenhauer, Frank, Gonté, Frédéric, Schuhler, Nicolas, Lutz, Dieter, Riquelme, Miguel, Bourget, Pierre, Neuville, Philippe, Lacour, Sylvestre, Nowak, Mathias
Scaling up interferometry to 8m collectors should smooth-out the optical piston perturbations and allow a slow fringe tracker to obtain high precision correction on faint targets. In practice, the GRAVITY fringe tracker still observes high frequency
Externí odkaz:
http://arxiv.org/abs/2407.17191
Autor:
Laugier, Romain, Defrère, Denis, Ireland, Michael, Garreau, Germain, Absil, Olivier, Matter, Alexis, Petrov, Romain, Berio, Philippe, Tuthill, Peter, Martinod, Marc-Antoine, Labadie, Lucas
To leverage the angular resolution of interferometry at high contrast, one must employ specialized beam-combiners called interferometric nullers. Nullers discard part of the astrophysical information to optimize the recording of light present in the
Externí odkaz:
http://arxiv.org/abs/2407.17177
Autor:
Martinod, Marc-Antoine, Defrère, Denis, Laugier, Romain, Ertel, Steve, Absil, Olivier, Norris, Barnaby, Garreau, Germain, Mennesson, Bertrand
Nulling interferometry is a powerful observing technique to reach exoplanets and circumstellar dust at separations too small for direct imaging with single-dish telescopes and too large for indirect methods. With near-future instrumentation, it bears
Externí odkaz:
http://arxiv.org/abs/2407.08802
Autor:
Garreau, G., Bigioli, A., Laugier, R., La Torre, B., Martinod, M-A., Missiaen, K., Morren, J., Raskin, G., Salman, M., Gross, S., Ireland, M., Joó, A. P., Labadie, L., Madden, S., Mazzoli, A., Medgyesi, G., Sanny, A., Taras, A., Vandenbussche, B., Defrère, D.
Publikováno v:
Proc. SPIE 13095, Optical and Infrared Interferometry and Imaging IX, 130950P (15 February 2024)
Asgard/NOTT is an ERC-funded project hosted at KU Leuven and is part of a new visitor instrumental suite, called Asgard, under preparation for the Very Large Telescope Interferometer (VLTI). Leveraging nulling capabilities and the long VLTI baselines
Externí odkaz:
http://arxiv.org/abs/2407.08557