Zobrazeno 1 - 10
of 281
pro vyhledávání: '"LÉGER, Alain"'
Autor:
Lizzana, Manon, Malbet, Fabien, Kern, Pierre, Pancher, Fabrice, Soler, Sébastien, Lepine, Thierry, Leger, Alain
Publikováno v:
ICSO, Oct 2024, Antibes, France
High precision differential Astrometry is the branch of astronomy that evaluates the relative position, distance and motion of celestial objects with respect to the stars present in the field of view. A mission called Theia has been submitted in 2022
Externí odkaz:
http://arxiv.org/abs/2411.19524
Autor:
Malbet, Fabien, Mamon, Gary A., Labadie, Lucas, Sozzetti, Alessandro, Lizzana, Manon, Lépine, Thierry, Léger, Alain, Lagage, Pierre-Olivier
Publikováno v:
International Conference on Space Optics ICSO'2024, Philippe KUBIK; Fr{\'e}d{\'e}ric BERNARD; Nikos KARAFOLAS; Kyriaki MINOGLOU, Oct 2024, Antibes (06), France
Astrometry is one of the oldest branches of astronomy which measures the position, the proper motion and parallax of celestial objects. Following the Hipparcos and Gaia missions that have measured several billions of them using global astrometry, we
Externí odkaz:
http://arxiv.org/abs/2410.23019
Autor:
Pancher, Fabrice, Soler, Sebastien, Malbet, Fabien, Lizzana, Manon, Kern, Pierre, Lepine, Thierry, Leger, Alain
High precision differential astrometry assesses the positions, distances, and motions of celestial objects in relation to the stars. The focal plane of such space telescope must be calibrated with a precision down to the level of 1e-5 pixel in order
Externí odkaz:
http://arxiv.org/abs/2410.21911
Autor:
Defrère, Denis, Laugier, Romain, Martinod, Marc-Antoine, Garreau, Germain, Missiaen, Kwinten, Salman, Muhammad, Raskin, Gert, Dandumont, Colin, Ertel, Steve, Ireland, Michael J., Kraus, Stefan, Labadie, Lucas, Mazzoli, Alexandra, Medgyesi, Gyorgy, Sanny, Ahmed, Absil, Olivier, Ábráham, Peter, Berger, Jean-Philippe, Bonduelle, Myriam, Bigioli, Azzurra, Bouzerand, Emilie, Carter, Josh, Cvetojevic, Nick, Courtney-Barrer, Benjamin, Glauser, Adrian M., Gross, Simon, Haubois, Xavier, James, Noel, Joo, Andras Peter, Lagarde, Stephane, Léger, Alain, Leisenring, Jarron, Loicq, Jérôme, Martin, Guillermo, Martinache, Frantz, Mezo, Gyorgy, Morel, Sébastien, Morren, Johan, Ollivier, Marc, Robertson, Gordon, Rousseau, Hélène, Schofield, Warrick, Schuhler, Nicolas, Taras, Adam, Vandenbussche, Bart, Woillez, Julien
NOTT (formerly Hi-5) is the L'-band (3.5-4.0~microns) nulling interferometer of Asgard, an instrument suite in preparation for the VLTI visitor focus. The primary scientific objectives of NOTT include characterizing (i) young planetary systems near t
Externí odkaz:
http://arxiv.org/abs/2407.08397
Autor:
Defrère, Denis, Bigioli, Azzurra, Dandumont, Colin, Garreau, Germain, Laugier, Romain, Martinod, Marc-Antoine, Absil, Olivier, Berger, Jean-Philippe, Bouzerand, Emilie, Courtney-Barrer, Benjamin, Emsenhuber, Alexandre, Ertel, Steve, Gagne, Jonathan, Glauser, Adrian M., Gross, Simon, Ireland, Michael J., Kenchington, Harry-Dean, Kluska, Jacques, Kraus, Stefan, Labadie, Lucas, Laborde, Viktor, Leger, Alain, Leisenring, Jarron, Loicq, Jérôme, Martin, Guillermo, Morren, Johan, Matter, Alexis, Mazzoli, Alexandra, Missiaen, Kwinten, Salman, Muhammad, Ollivier, Marc, Raskin, Gert, Rousseau, Helene, Sanny, Ahmed, Verlinden, Simon, Vandenbussche, Bart, Woillez, Julien
Hi-5 is the L'-band (3.5-4.0 $\mu$m) high-contrast imager of Asgard, an instrument suite in preparation for the visitor focus of the VLTI. The system is optimized for high-contrast and high-sensitivity imaging within the diffraction limit of a single
Externí odkaz:
http://arxiv.org/abs/2208.08908
Autor:
Malbet, Fabien, Labadie, Lucas, Sozzetti, Alessandro, Mamon, Gary A., Shao, Mike, Goullioud, Renaud, Léger, Alain, Gai, Mario, Riva, Alberto, Busonero, Deborah, Lépine, Thierry, Lizzana, Manon, Brandeker, Alexis, Villaver, Eva
High-precision astrometry well beyond the capacities of Gaia will provide a unique way to achieve astrophysical breakthroughs, in particular on the nature of dark matter, and a complete survey of nearby habitable exoplanets. In this contribution, we
Externí odkaz:
http://arxiv.org/abs/2207.12540
Autor:
Malbet, Fabien, Boehm, Céline, Krone-Martins, Alberto, Amorim, Antonio, Anglada-Escudé, Guillem, Brandeker, Alexis, Courbin, Frédéric, Enßlin, Torsten, Falcão, Antonio, Freese, Katherine, Holl, Berry, Labadie, Lucas, Léger, Alain, Mamon, Gary, Mcarthur, Barbara, Mora, Alcione, Shao, Mike, Sozzetti, Alessandro, Spolyar, Douglas, Villaver, Eva, Abbas, Ummi, Albertus, Conrado, Alves, João, Barnes, Rory, Bonomo, Aldo Stefano, Bouy, Hervé, Brown, Warren, Cardoso, Vitor, Castellani, Marco, Chemin, Laurent, Clark, Hamish, Correia, Alexandre, Crosta, Mariateresa, Crouzier, Antoine, Damasso, Mario, Darling, Jeremy, Davies, Melvyn, Diaferio, Antonaldo, Fortin, Morgane, Fridlund, Malcolm, Gai, Mario, Garcia, Paulo, Gnedin, Oleg, Goobar, Ariel, Gordo, Paulo, Goullioud, Renaud, Hall, David, Hambly, Nigel, Harrison, Diana, Hobbs, David, Holland, Andrew, Høg, Erik, Jordi, Carme, Klioner, Sergei, Lançon, Ariane, Laskar, Jacques, Lattanzi, Mario, Poncin-Lafitte, Christophe Le, Luri, Xavier, Michalik, Daniel, de Almeida, André Moitinho, Mourão, Ana, Moustakas, Leonidas, Murray, Neil, Muterspaugh, Matthew, Oertel, Micaela, Ostorero, Luisa, Portell, Jordi, Prost, Jean-Pierre, Quirrenbach, Andreas, Schneider, Jean, Scott, Pat, Siebert, Arnaud, Da Silva, Antonio, Silva, Manuel, Thébault, Philippe, Tomsick, John, Traub, Wesley, de Val-Borro, Miguel, Valluri, Monica, Walton, Nicholas, Watkins, Laura, White, Glenn, Wyrzykowski, Lukasz, Wyse, Rosemary, Yamada, Yoshiyuki
Publikováno v:
Experimental Astronomy, Springer Link, 2021, 51 (3), pp.845-886
Sky survey telescopes and powerful targeted telescopes play complementary roles in astronomy. In order to investigate the nature and characteristics of the motions of very faint objects, a flexibly-pointed instrument capable of high astrometric accur
Externí odkaz:
http://arxiv.org/abs/2111.08709
Autor:
The Theia Collaboration, Boehm, Celine, Krone-Martins, Alberto, Amorim, Antonio, Anglada-Escude, Guillem, Brandeker, Alexis, Courbin, Frederic, Ensslin, Torsten, Falcao, Antonio, Freese, Katherine, Holl, Berry, Labadie, Lucas, Leger, Alain, Malbet, Fabien, Mamon, Gary, McArthur, Barbara, Mora, Alcione, Shao, Michael, Sozzetti, Alessandro, Spolyar, Douglas, Villaver, Eva, Albertus, Conrado, Bertone, Stefano, Bouy, Herve, Boylan-Kolchin, Michael, Brown, Anthony, Brown, Warren, Cardoso, Vitor, Chemin, Laurent, Claudi, Riccardo, Correia, Alexandre C. M., Crosta, Mariateresa, Crouzier, Antoine, Cyr-Racine, Francis-Yan, Damasso, Mario, da Silva, Antonio, Davies, Melvyn, Das, Payel, Dayal, Pratika, de Val-Borro, Miguel, Diaferio, Antonaldo, Erickcek, Adrienne, Fairbairn, Malcolm, Fortin, Morgane, Fridlund, Malcolm, Garcia, Paulo, Gnedin, Oleg, Goobar, Ariel, Gordo, Paulo, Goullioud, Renaud, Hambly, Nigel, Hara, Nathan, Hobbs, David, Hog, Erik, Holland, Andrew, Ibata, Rodrigo, Jordi, Carme, Klioner, Sergei, Kopeikin, Sergei, Lacroix, Thomas, Laskar, Jacques, Poncin-Lafitte, Christophe Le, Luri, Xavier, Majumdar, Subhabrata, Makarov, Valeri, Massey, Richard, Mennesson, Bertrand, Michalik, Daniel, de Almeida, Andre Moitinho, Mourao, Ana, Moustakas, Leonidas, Murray, Neil, Muterspaugh, Matthew, Oertel, Micaela, Ostorero, Luisa, Perez-Garcia, Angeles, Platais, Imants, de Mora, Jordi Portell i, Quirrenbach, Andreas, Randall, Lisa, Read, Justin, Regos, Eniko, Rory, Barnes, Rybicki, Krzysztof, Scott, Pat, Schneider, Jean, Scholtz, Jakub, Siebert, Arnaud, Tereno, Ismael, Tomsick, John, Traub, Wesley, Valluri, Monica, Walker, Matt, Walton, Nicholas, Watkins, Laura, White, Glenn, Evans, Dafydd Wyn, Wyrzykowski, Lukasz, Wyse, Rosemary
In the context of the ESA M5 (medium mission) call we proposed a new satellite mission, Theia, based on relative astrometry and extreme precision to study the motion of very faint objects in the Universe. Theia is primarily designed to study the loca
Externí odkaz:
http://arxiv.org/abs/1707.01348
Autor:
Gaudi, B. Scott, Agol, Eric, Apai, Daniel, Bendek, Eduardo, Boss, Alan, Breckinridge, James B., Ciardi, David R., Cowan, Nicolas B., Danchi, William C., Domagal-Goldman, Shawn, Fortney, Jonathan J., Greene, Thomas P., Kaltenegger, Lisa, Kasting, James F., Leisawitz, David T., Leger, Alain, Lille, Charles F., Lisman, Douglas P., Lo, Amy S., Malbet, Fabian, Mandell, Avi M., Meadows, Victoria S., Mennesson, Bertrand, Nemati, Bijan, Plavchan, Peter P., Rinehart, Stephen A., Roberge, Aki, Serabyn, Eugene, Shaklan, Stuart B., Shao, Michael, Stapelfeldt, Karl R., Stark, Christopher C., Swain, Mark, Taylor, Stuart F., Turnbull, Margaret C., Turner, Neal J., Turyshev, Slava G., Unwin, Stephen C., Walkowicz, Lucianne M.
This is a joint summary of the reports from the three Astrophysics Program Analysis Groups (PAGs) in response to the "Planning for the 2020 Decadal Survey" charge given by the Astrophysics Division Director Paul Hertz. This joint executive summary co
Externí odkaz:
http://arxiv.org/abs/1601.00008