Looking At the Distant Universe with the MeerKAT Array: the HI Mass Function in the Local Universe

Autor: Kazemi-Moridani, Amir, Baker, Andrew J., Verheijen, Marc, Gawiser, Eric, Blyth, Sarah-Louise, Obreschkow, Danail, Chemin, Laurent, Collier, Jordan D., Cook, Kyle W., Delhaize, Jacinta, Elson, Ed, Frank, Bradley S., Glowacki, Marcin, Hess, Kelley M., Holwerda, Benne W., Hutchens, Zackary L., Jarvis, Matt J., Kaasinen, Melanie, Makhathini, Sphesihle, Mohapatra, Abhisek, Pan, Hengxing, Schröder, Anja C., Stockenstroom, Leyya, Vaccari, Mattia, Westmeier, Tobias, Wu, John F., Zwaan, Martin

We present measurements of the neutral atomic hydrogen (HI) mass function (HIMF) and cosmic HI density ($\Omega_{\rm HI}$) at $0 \leq z \leq 0.088$ from the Looking at the Distant Universe with MeerKAT Array (LADUMA) survey. Using LADUMA Data Release

Externí odkaz: http://arxiv.org/abs/2412.11426

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

Radii, masses, and transit-timing variations of the three-planet system orbiting the naked-eye star TOI-396

Autor: Bonfanti, A., Amateis, I., Gandolfi, D., Borsato, L., Egger, J. A., Cubillos, P. E., Armstrong, D., Leão, I. C., Fridlund, M., Martins, B. L. Canto, Sousa, S. G., De Medeiros, J. R., Fossati, L., Adibekyan, V., Cameron, A. Collier, Grziwa, S., Lam, K. W. F., Goffo, E., Nielsen, L. D., Rodler, F., Alarcon, J., Lillo-Box, J., Cochran, W. D., Luque, R., Redfield, S., Santos, N. C., Barros, S. C. C., Bayliss, D., Dumusque, X., Keniger, M. A. F., Livingston, J., Murgas, F., Nowak, G., Osborn, A., Osborn, H. P., Pallé, E., Persson, C. M., Serrano, L. M., Strøm, P. A., Udry, S., Wheatley, P. J.

TOI-396 is an F6V star ($V\approx6.4$) orbited by three transiting planets. The orbital periods of the two innermost planets are close to the 5:3 commensurability ($P_b \sim3.6$ d and $P_c \sim6.0$ d). To measure the masses of the three planets, refi

Externí odkaz: http://arxiv.org/abs/2411.14911

Solar flares in the Solar Orbiter era: Short-exposure EUI/FSI observations of STIX flares

Autor: Collier, Hannah, Hayes, Laura A., Purkhart, Stefan, Krucker, Säm, Ryan, Daniel F., Polito, Vanessa, Veronig, Astrid M., Harra, Louise K., Berghmans, David, Kraaikamp, Emil, Dominique, Marie, Dolla, Laurent R., Verbeeck, Cis

Publikováno v: A&A 692, A176 (2024)

Aims: This paper aims to demonstrate the importance of short-exposure extreme ultraviolet (EUV) observations of solar flares in the study of particle acceleration, heating and energy partition in flares. This work highlights the observations now avai

Externí odkaz: http://arxiv.org/abs/2411.09319