Zobrazeno 31 - 40
of 613
pro vyhledávání: '"Kospal, A."'
Autor:
de Miera, F. Cruz-Sáenz, Kóspál, Á., Ábrahám, P., Claes, R. A. B., Manara, C. F., Wendeborn, J., Fiorellino, E., Giannini, T., Nisini, B., Sicilia-Aguilar, A., Campbell-White, J., Alcalá, J. M., Banzatti, A., Szabó, Zs. M., Lykou, F., Antoniucci, S., Varga, J., Siwak, M., Park, S., Nagy, Zs., Kun, M.
Publikováno v:
A&A 678, A88 (2023)
EX Lupi is the prototype by which EXor-type outbursts were defined. It has experienced multiple accretion-related bursts and outbursts throughout the last decades, whose study have greatly extended our knowledge about the effects of these types of ev
Externí odkaz:
http://arxiv.org/abs/2308.02849
Autor:
Weber, P., Pérez, S., Zurlo, A., Miley, J., Hales, A., Cieza, L., Principe, D., Cárcamo, M., Garufi, A., Kóspál, Á., Takami, M., Kastner, J., Zhu, Z., Williams, J.
The formation of giant planets has traditionally been divided into two pathways: core accretion and gravitational instability. However, in recent years, gravitational instability has become less favored, primarily due to the scarcity of observations
Externí odkaz:
http://arxiv.org/abs/2307.13433
Autor:
Siwak, Michał, Hillenbrand, Lynne A., Kóspál, Ágnes, Ábrahám, Péter, Giannini, Teresa, De, Kishalay, Moór, Attila, Szilágyi, Máté, Janík, Jan, Koen, Chris, Park, Sunkyung, Nagy, Zsófia, de Miera, Fernando Cruz-Sáenz, Fiorellino, Eleonora, Marton, Gábor, Kun, Mária, Lucas, Philip W., Udalski, Andrzej, Szabó, Zsófia Marianna
Gaia21bty, a pre-main sequence star that previously had shown aperiodic dips in its light curve, underwent a considerable $\Delta G\approx2.9$ mag brightening that occurred over a few months between 2020 October - 2021 February. The Gaia lightcurve s
Externí odkaz:
http://arxiv.org/abs/2307.08802
Autor:
Allart, R., Lemée-Joliecoeur, P. -B., Jaziri, A. Y., Lafrenière, D., Artigau, E., Cook, N., Darveau-Bernier, A., Dang, L., Cadieux, C., Boucher, A., Bourrier, V., Deibert, E. K., Pelletier, S., Radica, M., Benneke, B., Carmona, A., Cloutier, R., Cowan, N. B., Delfosse, X., Donati, J. -F., Doyon, R., Figueira, P., Forveille, T., Fouqué, P., Gaidos, E., Gu, P. -G., Hébrard, G., Kiefer, F., Kóspál, Á, Jayawardhana, R., Martioli, E., Santos, L. A. Dos, Turner, H. Shang J. D., Vidotto, A.
Publikováno v:
A&A 677, A164 (2023)
The metastable helium triplet in the near-infrared (10833{\AA}) is among the most important probes of exoplanet atmospheres. It can trace their extended outer layers and constrain mass-loss. We use the near-infrared high-resolution spectropolarimeter
Externí odkaz:
http://arxiv.org/abs/2307.05580
Autor:
Nagy, Zsófia, Park, Sunkyung, Ábrahám, Péter, Kóspál, Ágnes, de Miera, Fernando Cruz-Sáenz, Kun, Mária, Siwak, Michał, Szabó, Zsófia Marianna, Szilágyi, Máté, Fiorellino, Eleonora, Giannini, Teresa, Lee, Jae-Joon, Lee, Jeong-Eun, Marton, Gábor, Szabados, László, Vitali, Fabrizio, Andrzejewski, Jan, Gromadzki, Mariusz, Hodgkin, Simon, Jabłońska, Maja, Mendez, Rene A., Merc, Jaroslav, Michniewicz, Olga, Mikołajczyk, Przemysław J., Pylypenko, Uliana, Ratajczak, Milena, Wyrzykowski, Łukasz, Zejmo, Michal, Zieliński, Paweł
FU Orionis objects (FUors) are eruptive young stars, which exhibit outbursts that last from decades to a century. Due to the duration of their outbursts, and to the fact that only about two dozens of such sources are known, information on the end of
Externí odkaz:
http://arxiv.org/abs/2307.01629
Autor:
Gangi, M., Nisini, B., Manara, C. F., France, K., Antoniucci, S., Biazzo, K., Giannini, T., Herczeg, G. J., Alcalá, J. M., Frasca, A., Maucó, K., Campbell-White, J., Siwak, M., Venuti, L., Schneider, P. C., Kóspál, Á., Garatti, A. Caratti o, Fiorellino, E., Rigliaco, E., Yadav, R. K.
Publikováno v:
A&A 675, A153 (2023)
Observing the spatial distribution and excitation processes of atomic and molecular gas in the inner regions (< 20 au) of young (< 10 Myr) protoplanetary disks helps us to understand the conditions for the formation and evolution of planetary systems
Externí odkaz:
http://arxiv.org/abs/2305.18940
Autor:
Szabó, Zs. M., Gong, Y., Yang, W., Menten, K. M., Bayandina, O. S., Cyganowski, C. J., Kóspál, Á., Ábrahám, P., Belloche, A., Wyrowski, F.
FU Orionis (FUor) and EX Lupi (EXor) type objects are two groups of peculiar and rare pre-main sequence low-mass stars that are undergoing powerful accretion outbursts during their early stellar evolution. Water masers are widespread in star forming
Externí odkaz:
http://arxiv.org/abs/2305.00736
Autor:
Donati, J. -F., Cristofari, P. I., Finociety, B., Klein, B., Moutou, C., Gaidos, E., Cadieux, C., Artigau, E., Correia, A. C. M., Boué, G., Cook, N. J., Carmona, A., Lehmann, L. T., Bouvier, J., Martioli, E., Morin, J., Fouqué, P., Delfosse, X., Royon, R., Hébrard, G., Alencar, S. H. P., Laskar, J., Arnold, L., Petit, P., Kospal, A., Vidotto, A., Folsom, C. P., collaboration, the SLS
In this paper we present an analysis of near-infrared spectropolarimetric and velocimetric data of the young M dwarf AU Mic, collected with SPIRou at the Canada-France-Hawaii telescope from 2019 to 2022, mostly within the SPIRou Legacy Survey. With t
Externí odkaz:
http://arxiv.org/abs/2304.09642
Autor:
Campbell-White, Justyn, Manara, Carlo F., Sicilia-Aguilar, Aurora, Frasca, Antonio, Nielsen, Louise D., Schneider, P. Christian, Nisini, Brunella, Bayo, Amelia, Ercolano, Barbara, Ábrahám, Péter, Claes, Rik, Fang, Min, Fedele, Davide, Gameiro, Jorge Filipe, Gangi, Manuele, Kóspál, Ágnes, Maucó, Karina, Petr-Gotzens, Monika G., Rigliaco, Elisabetta, Robinson, Connor, Siwak, Michal, Tychoniec, Lukasz, Venuti, Laura
Publikováno v:
A&A 673, A80 (2023)
Absorption features in stellar atmospheres are often used to calibrate photocentric velocities for kinematic analysis of further spectral lines. The Li feature at $\sim$ 6708 {\AA} is commonly used, especially in the case of young stellar objects for
Externí odkaz:
http://arxiv.org/abs/2303.03843
Autor:
Szabó, Zs. M., Gong, Y., Menten, K. M., Yang, W., Cyganowski, C. J., Kóspál, Á., Ábrahám, P., Belloche, A., Wyrowski, F.
Publikováno v:
A&A 672, A158 (2023)
FU Orionis (FUor) and EX Lupi (EXor) type objects represent two small, but rather spectacular groups of low-mass, young eruptive stars. Outbursts of several magnitudes are observed, attributed to enhanced accretion from the circumstellar disk onto th
Externí odkaz:
http://arxiv.org/abs/2302.03371