Ejecta masses in Type Ia Supernovae -- Implications for the Progenitor and the Explosion Scenario

Autor: Bora, Zsófia, Könyves-Tóth, Réka, Vinkó, József, Bánhidi, Dominik, Bíró, Imre Barna, Bostroem, K. Azalee, Bódi, Attila, Burke, Jamison, Csányi, István, Cseh, Borbála, Farah, Joseph, Filippenko, Alexei V., Hegedűs, Tibor, Hiramatsu, Daichi, Horti-Dávid, Ágoston, Howell, D. Andrew, Jha, Saurabh W., Kalup, Csilla, Krezinger, Máté, Kriskovics, Levente, McCully, Curtis, Newsome, Megan, Ordasi, András, Gonzalez, Estefania Padilla, Pál, András, Pellegrino, Craig, Seli, Bálint, Sódor, Ádám, Szabó, Zsófia Marianna, Szabó, Norton O., Szakáts, Róbert, Szalai, Tamás, Székely, Péter, Terreran, Giacomo, Varga, Vázsony, Vida, Krisztián, Wang, Xiaofeng, Wheeler, J. Craig

The progenitor system(s) as well as the explosion mechanism(s) of thermonuclear (Type Ia) supernovae are long-standing issues in astrophysics. Here we present ejecta masses and other physical parameters for 28 recent Type Ia supernovae inferred from

Externí odkaz: http://arxiv.org/abs/2408.11928

CHEOPS in-flight performance: A comprehensive look at the first 3.5 years of operations

Autor: Fortier, A., Simon, A. E., Broeg, C., Olofsson, G., Deline, A., Wilson, T. G., Maxted, P. F. L., Brandeker, A., Cameron, A. Collier, Beck, M., Bekkelien, A., Billot, N., Bonfanti, A., Bruno, G., Cabrera, J., Delrez, L., Demory, B. -O., Futyan, D., Florén, H. -G., Günther, M. N., Heitzmann, A., Hoyer, S., Isaak, K. G., Sousa, S. G., Stalport, M., Turin, A., Verhoeve, P., Akinsanmi, B., Alibert, Y., Alonso, R., Bánhidi, D., Bárczy, T., Barrado, D., Barros, S. C., Baumjohann, W., Baycroft, T., Beck, T., Benz, W., Bíró, B. I., Bódi, A., Bonfils, X., Borsato, L., Charnoz, S., Cseh, B., Csizmadia, Sz., Csányi, I., Cubillos, P. E., Davies, M. B., Davis, Y. T., Deleuil, M., Demangeon, O. D. S., Derekas, A., Dransfield, G., Ducrot, E., Ehrenreich, D., Erikson, A., Fariña, C., Fossati, L., Fridlund, M., Gandolfi, D., Garai, Z., Garcia, L., Gillon, M., Chew, Y. Gómez Maqueo, Gómez-Muñoz, M. A., Granata, V., Güdel, M., Guterman, P., Hegedüs, T., Helling, Ch., Jehin, E., Kalup, Cs., Kilkenny, D., Kiss, L., Kriskovics, L., Lam, K. W. F., Laskar, J., Etangs, A. Lecavelier des, Lendl, M., Pina, A. Lopez, Luntzer, A., Magrin, D., Miller, N. J., Contreras, D. Modrego, Mordasini, C., Munari, M., Murray, C. A., Nascimbeni, V., Ottacher, H., Ottensamer, R., Pagano, I., Pál, A., Pallé, E., Pasetti, A., Pedersen, P., Peter, G., Petrucci, R., Piotto, G., Pizarro-Rubio, A., Pollacco, D., Pribulla, T., Queloz, D., Ragazzoni, R., Rando, N., Rauer, H., Ribas, I., Sabin, L., Santos, N. C., Scandariato, G., Schanche, N., Schroffenegger, U., Scutt, O. J., Sebastian, D., Ségransan, D., Seli, B., Smith, A. M. S., Southworth, R., Standing, M. R., Szabó, M. Gy., Szakáts, R., Thomas, N., Timmermans, M., Triaud, A. H. M. J., Udry, S., Van Grootel, V., Venturini, J., Villaver, E., Vinkó, J., Walton, N. A., Wells, R., Wolter, D.

CHEOPS is a space telescope specifically designed to monitor transiting exoplanets orbiting bright stars. In September 2023, CHEOPS completed its nominal mission and remains in excellent operational conditions. The mission has been extended until the

Externí odkaz: http://arxiv.org/abs/2406.01716

Atmospheric parameters and abundances of cool red giant stars

Autor: Dencs, Z., Derekas, A., Mitnyan, T., Andersen, M. F., Cseh, B., Grundahl, F., Hegedűs, V., Kovács, J., Kriskovics, L., Palle, P. L., Pál, A., Szigeti, L., Mészáros, Sz.

Understanding the atmospheric parameters of stars on the top of the RGB is essential to reveal the chemical composition of the Milky Way, as they can be used to probe the farthest parts of our Galaxy. Our goal is to determine the chemical composition

Externí odkaz: http://arxiv.org/abs/2404.13176

$^{12}$C and $\alpha$-clusters, $0^+$ spectrum, and Hoyle-state candidates in $^{24}$Mg

Autor: Cseh, J., Riczu, G., Jenkins, D. G.

Background: A recent inelastic alpha-scattering experiment [Phys. Rev. Lett. 129, 102701 (2022)] found $0^+$ resonances in $^{24}$Mg on and above the $^{12}$C+$^{12}$C break-up threshold. It has been conjectured that the states have a $^{12}$C+$^{12}

Externí odkaz: http://arxiv.org/abs/2312.08318

SN 2022oqm: A Bright and Multi-peaked Calcium-rich Transient

Autor: Yadavalli, S. Karthik, Villar, V. Ashley, Izzo, Luca, Zenati, Yossef, Foley, Ryan J., Wheeler, J. Craig, Angus, Charlotte R., Bánhidi, Dominik, Auchettl, Katie, Bíró, Barna Imre, Bódi, Attila, Bodola, Zsófia, de Boer, Thomas, Chambers, Kenneth C., Chornock, Ryan, Coulter, David A., Csányi, István, Cseh, Borbála, Dandu, Srujan, Davis, Kyle W., Dickinson, Connor Braden, Farias, Diego, Farah, Joseph, Gall, Christa, Gao, Hua, Howell, D. Andrew, Jacobson-Galan, Wynn V., Khetan, Nandita, Kilpatrick, Charles D., Könyves-Tóth, Réka, Kriskovics, Levente, LeBaron, Natalie, Loertscher, Kayla, Saux, X. K. Le, Margutti, Rafaella, Magnier, Eugene A., McCully, Curtis, McGill, Peter, Miao, Hao-Yu, Newsome, Megan, Gonzalez, Estefania Padilla, Pál, András, Pál, Boróka H., Pan, Yen-Chen, Politsch, Collin A., Ransome, Conor L., Ramirez-Ruiz, Enrico, Rest, Armin, Rest, Sofia, Robinson, Olivia, Sears, Huei, Scheer, Jackson, Sódor, Ádám, Swift, Jonathan, Székely, Péter, Szakáts, Róbert, Szalai, Tamás, Taggart, Kirsty, Terreran, Giacomo, Venkatraman, Padma, Vinkó, József, Yang, Grace, Zhou, Henry

We present the photometric and spectroscopic evolution of SN 2022oqm, a nearby multi-peaked hydrogen- and helium-weak calcium-rich transient (CaRT). SN 2022oqm was detected 13.1 kpc from its host galaxy, the face-on spiral galaxy NGC 5875. Extensive

Externí odkaz: http://arxiv.org/abs/2308.12991