Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Prisegen, M."'
When observing astronomical objects, we must deal with extinction (i.e. the absorption and scattering of the emitted radiation by dust and gas between the source and the observer). Interstellar extinction depends on the location of the object and the
Externí odkaz:
http://arxiv.org/abs/2407.21373
Autor:
Bauer-Fasching, B., Bernhard, K., Brändli, E., Burger, H., Eisele, B., Hümmerich, S., Neuhold, J., Paunzen, E., Piecka, M., Ratzenböck, S., Prišegen, M.
The manifestation of surface spots on magnetic chemically peculiar (mCP) stars is most commonly explained by the atomic diffusion theory, which requires a calm stellar atmosphere and only moderate rotation. While very successful and well described, t
Externí odkaz:
http://arxiv.org/abs/2406.06203
Autor:
Kueß, L., Paunzen, E., Faltová, N., Jadlovský, D., Labaj, M., Mesarč, M., Mondal, P., Prišegen, M., Ramezani, T., Supíková, J., Svačinková, K., Vítková, M., Xia, C., Bernhard, K., Hümmerich, S.
Publikováno v:
A&A 687, A176 (2024)
Context. The chemically peculiar (CP) stars of the upper main sequence are defined by spectral peculiarities that indicate unusual elemental abundance patterns in the presence of diffusion in the calm, stellar atmospheres. Some of them have a stable
Externí odkaz:
http://arxiv.org/abs/2405.08946
Autor:
Prišegen, M., Faltová, N.
Publikováno v:
A&A 678, A20 (2023)
Context: Open clusters (OCs) provide homogeneous samples of white dwarfs (WDs) with known distances, extinctions, and total ages. The unprecedented astrometric precision of \textit{\textit{Gaia}} allows us to identify many novel OC--WD pairs. Studyin
Externí odkaz:
http://arxiv.org/abs/2307.01337
Autor:
Krtička, J., Benáček, J., Budaj, J., Korčáková, D., Pál, A., Piecka, M., Zejda, M., Bakış, V., Brož, M., Chang, Hsiang-Kuang, Faltová, N., Gális, R., Jadlovský, D., Janík, J., Kára, J., Kolář, J., Krtičková, I., Kubát, J., Kubátová, B., Kurfürst, P., Labaj, M., Merc, J., Mikulášek, Z., Münz, F., Paunzen, E., Prišegen, M., Ramezani, T., Rievajová, T., Řípa, J., Schmidtobreick, L., Skarka, M., Szász, G., Weiss, W., Zajaček, M., Werner, N.
We outline the impact of a small two-band UV-photometry satellite mission on the field of stellar physics, magnetospheres of stars, binaries, stellar clusters, interstellar matter, and exoplanets. On specific examples of different types of stars and
Externí odkaz:
http://arxiv.org/abs/2306.15081
Autor:
Werner, N., Řípa, J., Thöne, C., Münz, F., Kurfürst, P., Jelínek, M., Hroch, F., Benáček, J., Topinka, M., Lukes-Gerakopoulos, G., Zajaček, M., Labaj, M., Prišegen, M., Krtička, J., Merc, J., Pál, A., Pejcha, O., Dániel, V., Jon, J., Šošovička, R., Gromeš, J., Václavík, J., Steiger, L., Segiňák, J., Behar, E., Tarem, S., Salh, J., Reich, O., Ben-Ami, S., Barschke, M. F., Berge, D., Tohuvavohu, A., Sivanandam, S., Bulla, M., Popov, S., Chang, Hsiang-Kuang
This is the first in a collection of three papers introducing the science with an ultra-violet (UV) space telescope on an approximately 130~kg small satellite with a moderately fast re-pointing capability and a real-time alert communication system ap
Externí odkaz:
http://arxiv.org/abs/2306.15080
Autor:
Paunzen, E., Prisegen, M.
Publikováno v:
A&A 667, L10 (2022)
The magnetic chemically peculiar (mCP) stars of the upper main sequence are perfectly suited to studying the effects of rotation, diffusion, mass-loss, accretion, and pulsation in the presence of an organized stellar magnetic field. Therefore, many i
Externí odkaz:
http://arxiv.org/abs/2210.02433
Autor:
Werner, N., Řípa, J., Münz, F., Hroch, F., Jelínek, M., Krtička, J., Zajaček, M., Topinka, M., Dániel, V., Gromeš, J., Václavík, J., Steiger, L., Lédl, V., Seginak, J., Benáček, J., Budaj, J., Faltová, N., Gális, R., Jadlovský, D., Janík, J., Kajan, M., Karas, V., Korčáková, D., Kosiba, M., Krtičková, I., Kubát, J., Kubátová, B., Kurfürst, P., Labaj, M., Mikulášek, Z., Pál, A., Paunzen, E., Piecka, M., Prišegen, M., Ramezani, T., Skarka, M., Szász, G., Thöne, C., Zejda, M.
We present a near-UV space telescope on a ~70kg micro-satellite with a moderately fast repointing capability and a near real-time alert communication system that has been proposed in response to a call for an ambitious Czech national mission. The mis
Externí odkaz:
http://arxiv.org/abs/2207.05485
Autor:
Faltová, N., Kallová, K., Prišegen, M., Staněk, P., Supíková, J., Xia, C., Bernhard, K., Hümmerich, S., Paunzen, E.
Publikováno v:
A&A 656, A125 (2021)
Magnetic chemically peculiar (mCP) stars exhibit complex atmospheres that allow the investigation of the interplay of atomic diffusion, magnetic fields, and stellar rotation. A non-uniform surface distribution of chemical elements and the non-alignme
Externí odkaz:
http://arxiv.org/abs/2108.11411
Since the discovery of the spectral peculiarities of their prototype alpha2 Canum Venaticorum in 1897, the so-called ACV variables, which are comprised of several groups of chemically peculiar stars of the upper main sequence, have been the target of
Externí odkaz:
http://arxiv.org/abs/2105.02206