First unambiguous detection of ammonia in the atmosphere of a planetary mass companion with JWST/MIRI coronagraphs

Autor: Mâlin, Mathilde, Boccaletti, Anthony, Perrot, Clément, Baudoz, Pierre, Rouan, Daniel, Lagage, Pierre-Olivier, Waters, Rens, Güdel, Manuel, Henning, Thomas, Vandenbussche, Bart, Absil, Olivier, Barrado, David, Charnay, Benjamin, Choquet, Elodie, Cossou, Christophe, Danielski, Camilla, Decin, Leen, Glauser, Adrian M., Pye, John, Olofsson, Goran, Glasse, Alistair, Patapis, Polychronis, Royer, Pierre, Scheithauer, Silvia, Serabyn, Eugene, Tremblin, Pascal, Whiteford, Niall, van Dishoeck, Ewine F., Ostlin, Göran, Ra, Tom P., Wright, Gillian

The newly accessible mid-infrared (MIR) window offered by the James Webb Space Telescope (JWST) for exoplanet imaging is expected to provide valuable information to characterize their atmospheres. In particular, coronagraphs on board the JWST Mid-Inf

Externí odkaz: http://arxiv.org/abs/2501.00104

Combined analysis of the 12.8 and 15 $\mu m$ JWST/MIRI eclipse observations of TRAPPIST-1 b

Autor: Ducrot, Elsa, Lagage, Pierre-Olivier, Min, Michiel, Gillon, Michael, Bell, Taylor J., Tremblin, Pascal, Greene, Thomas, Dyrek, Achrene, Bouwman, Jeroen, Waters, Rens, Gudel, Manuel, Henning, Thomas, Vandenbussche, Bart, Absil, Olivier, Barrado, David, Boccaletti, Anthony, Coulais, Alain, Decin, Leen, Edwards, Billy, Gastaud, Rene, Glasse, Alistair, Kendrew, Sarah, Olofsson, Goran, Patapis, Polychronis, Pye, John, Rouan, Daniel, Whiteford, Niall, Argyriou, Ioannis, Cossou, Christophe, Glauser, Adrian M., Krause, Oliver, Lahuis, Fred, Royer, Pierre, Scheithauer, Silvia, Colina, Luis, van Dishoeck, Ewine F., Ostlin, Goran, Ray, Tom P., Wright, Gillian

The first JWST/MIRI photometric observations of TRAPPIST-1 b allowed for the detection of the thermal emission of the planet at 15 $\mu m$, suggesting that the planet could be a bare rock with a zero albedo and no redistribution of heat. These observ

Externí odkaz: http://arxiv.org/abs/2412.11627

A joint effort to discover and characterize two resonant mini Neptunes around TOI-1803 with TESS, HARPS-N and CHEOPS

Autor: Zingales, T., Malavolta, L., Borsato, L., Turrini, D., Bonfanti, A., Polychroni, D., Mantovan, G., Nardiello, D., Nascimbeni, V., Lanza, A. F., Bekkelien, A., Sozzetti, A., Broeg, C., Naponiello, L., Lendl, M., Bonomo, A. S., Simon, A. E., Desidera, S., Piotto, G., Mancini, L., Hooton, M. J., Bignamini, A., Egger, J. A., Maggio, A., Alibert, Y., Locci, D., Delrez, L., Biassoni, F., Fossati, L., Cabona, L., Lacedelli, G., Carleo, I., Leonardi, P., Andreuzzi, G., Brandeker, A., Cosentino, R., Correia, A. C. M., Claudi, R., Alonso, R., Damasso, M., Wilson, T. G., Bàrczy, T., Pinamonti, M., Baker, D., Barkaoui, K., Navascues, D. Barrado, Barros, S. C. C., Baumjohann, W., Beck, T., Beichman, C., Benz, W., Bieryla, A., Billot, N., Bosch-Cabot, P., Bouma, L. G., Ciardi, D. R., Cameron, A. Collier, Collins, K. A., Crossfield, Ian J. M., Csizmadia, Sz., Cubillos, P. E., Davies, M. B., Deleuil, M., Deline, A., Demangeon, O. D. S., Demory, B. O., Derekas, A., Dragomir, D., Edwards, B., Ehrenreich, D., Erikson, A., Falk, B., Fortier, A., Fridlund, M., Fukui, A., Gandolfi, D., Gazeas, K., Gillon, M., Gonzales, E., Gudel, M., Guerra, P., Guunther, M. N., Heitzmann, A., Helling, Ch., Howell, S. B., Isaak, K. G., Jenkins, J., Kiss, L. L., Korth, J., Lam, K. W. F., Laskar, J., Etangs, A. Lecavelier des, Magrin, D., Matson, R., Matthews, E. C., Maxted, P. F. L., McDermott, S., Munari, M., Mordasini, C., Narita, N., Olofsson, G., Ottensamer, R., Pagano, I., Pallè, E., Peter, G., Pollacco, D., Queloz, D., Ragazzoni, R., Rando, N., Ratti, F., Rauer, H., Ribas, I., Salmon, S., Santos, N. C., Scandariato, G., Seager, S., Sègransan, D., Smith, A. M. S., Schlieder, J., Schwarz, R. P., Shporer, A., Sousa, S. G., Stalport, M., Steinberger, M., Sulis, S., Szabò, Gy. M., Twicken, J. D., Udry, S., Van Grootel, V., Venturini, J., Villaver, E., Walton, N. A., Winn, J. N.

We present the discovery of two mini Neptunes near a 2:1 orbital resonance configuration orbiting the K0 star TOI-1803. We describe their orbital architecture in detail and suggest some possible formation and evolution scenarios. Using CHEOPS, TESS,

Externí odkaz: http://arxiv.org/abs/2412.05423

In-situ observations of resident space objects with the CHEOPS space telescope

Autor: Billot, Nicolas, Hellmich, Stephan, Benz, Willy, Fortier, Andrea, Ehrenreich, David, Broeg, Christopher, Heitzmann, Alexis, Bekkelien, Anja, Brandeker, Alexis, Alibert, Yann, Alonso, Roi, Bárczy, Tamas, Navascues, David Barrado, Barros, Susana C. C., Baumjohann, Wolfgang, Biondi, Federico, Borsato, Luca, Cameron, Andrew Collier, van Damme, Carlos Corral, Correia, Alexandre C. M., Csizmadia, Szilard, Cubillos, Patricio E., Davies, Melvyn B., Deleuil, Magali, Deline, Adrien, Demangeon, Olivier D. S., Demory, Brice-Olivier, Derekas, Aliz, Edwards, Billy, Egger, Jo Ann, Erikson, Anders, Fossati, Luca, Fridlund, Malcolm, Gandolfi, Davide, Gazeas, Kosmas, Gillon, Michaël, Güdel, Manuel, Günther, Maximilian N., Helling, Ch., Isaak, Kate G., Kiss, Laszlo L., Korth, Judith, Lam, Kristine W. F., Laskar, Jacques, Etangs, Alain Lecavelier des, Lendl, Monika, Magrin, Demetrio, Maxted, Pierre F. L., Mecina, Marko, Merín, Bruno, Mordasini, Christoph, Nascimbeni, Valerio, Olofsson, Göran, Ottensamer, Roland, Pagano, Isabella, Pallé, Enric, Peter, Gisbert, Piazza, Daniele, Piotto, Giampaolo, Pollacco, Don, Queloz, Didier, Ragazzoni, Roberto, Rando, Nicola, Rauer, Heike, Ribas, Ignasi, Rieder, Martin, Santos, Nuno C., Scandariato, Gaetano, Ségransan, Damien, Simon, Attila E., Smith, Alexis M. S., Sousa, Sérgio G., Stalport, Manu, Sulis, Sophia, Szabó, Gyula M., Udry, Stéphane, Ulmer, Bernd, Ulmer-Moll, Solène, Van Grootel, Valérie, Venturini, Julia, Villaver, Eva, Walton, Nicholas A., Wilson, Thomas G.

Publikováno v: Journal of Space Safety Engineering, Volume 11, Issue 3, September 2024, Pages 498-506

The CHaracterising ExOPlanet Satellite (CHEOPS) is a partnership between the European Space Agency and Switzerland with important contributions by 10 additional ESA member States. It is the first S-class mission in the ESA Science Programme. CHEOPS h

Externí odkaz: http://arxiv.org/abs/2411.18326

A close outer companion to the ultra-hot Jupiter TOI-2109 b?

Autor: Harre, J. -V., Smith, A. M. S., Barros, S. C. C., Singh, V., Korth, J., Brandeker, A., Cameron, A. Collier, Lendl, M., Wilson, T. G., Borsato, L., Csizmadia, Sz., Cabrera, J., Parviainen, H., Correia, A. C. M., Akinsanmi, B., Rosario, N., Leonardi, P., Serrano, L. M., Alibert, Y., Alonso, R., Asquier, J., Bárczy, T., Navascues, D. Barrado, Baumjohann, W., Benz, W., Billot, N., Broeg, C., Busch, M. -D., Cubillos, P. E., Davies, M. B., Deleuil, M., Deline, A., Delrez, L., Demangeon, O. D. S., Demory, B. -O., Derekas, A., Edwards, B., Ehrenreich, D., Erikson, A., Fortier, A., Fossati, L., Fridlund, M., Gandolfi, D., Gazeas, K., Gillon, M., Güdel, M., Günther, M. N., Heitzmann, A., Helling, Ch., Isaak, K. G., Kiss, L. L., Lam, K. W. F., Laskar, J., Etangs, A. Lecavelier des, Magrin, D., Maxted, P. F. L., Merín, B., Mordasini, C., Nascimbeni, V., Olofsson, G., Ottensamer, R., Pagano, I., Pallé, E., Peter, G., Piazza, D., Piotto, G., Pollacco, D., Queloz, D., Ragazzoni, R., Rando, N., Rauer, H., Ribas, I., Santos, N. C., Scandariato, G., Ségransan, D., Simon, A. E., Sousa, S. G., Stalport, M., Sulis, S., Szabó, Gy. M., Udry, S., Ulmer, B., Van Grootel, V., Venturini, J., Villaver, E., Viotto, V., Walton, N. A., West, R., Westerdorff, K.

Publikováno v: A&A 692, A254 (2024)

Hot Jupiters with close-by planetary companions are rare, with only a handful of them having been discovered so far. This could be due to their suggested dynamical histories, leading to the possible ejection of other planets. TOI-2109 b is special in

Externí odkaz: http://arxiv.org/abs/2411.07797