Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Michal Siwak"'
Autor:
Gregory J. Herczeg, Yuguang Chen, Jean-Francois Donati, Andrea K. Dupree, Frederick M. Walter, Lynne A. Hillenbrand, Christopher M. Johns-Krull, Carlo F. Manara, Hans Moritz Günther, Min Fang, P. Christian Schneider, Jeff A. Valenti, Silvia H. P. Alencar, Laura Venuti, Juan Manuel Alcalá, Antonio Frasca, Nicole Arulanantham, Jeffrey L. Linsky, Jerome Bouvier, Nancy S. Brickhouse, Nuria Calvet, Catherine C. Espaillat, Justyn Campbell-White, John M. Carpenter, Seok-Jun Chang, Kelle L. Cruz, S. E. Dahm, Jochen Eislöffel, Suzan Edwards, William J. Fischer, Zhen Guo, Thomas Henning, Tao Ji, Jessy Jose, Joel H. Kastner, Ralf Launhardt, David A. Principe, Connor E. Robinson, Javier Serna, Michal Siwak, Michael F. Sterzik, Shinsuke Takasao
Publikováno v:
The Astrophysical Journal, Vol 956, Iss 2, p 102 (2023)
Accretion plays a central role in the physics that governs the evolution and dispersal of protoplanetary disks. The primary goal of this paper is to analyze the stability over time of the mass accretion rate onto TW Hya, the nearest accreting solar-m
Externí odkaz:
https://doaj.org/article/ce42b0d00dc5441485186ec510cbe7cf
Autor:
Mauri Valtonen, Stanislaw Zola, Helen Jermak, Stefano Ciprini, Rene Hudec, Lankeswar Dey, Achamveedu Gopakumar, Daniel L. Reichart, Daniel B. Caton, Kosmas Gazeas, Katsura Matsumoto, Waldemar Ogloza, Marek Drozdz, Fahri Alicavus, Oleksandr Baransky, Andrei Berdyugin, Panos Boumis, Yurii Bufan, Bartlomiej Debski, Huseyin Er, Ahmet Erdem, Vira Godunova, Shirin Haque, Vivian L. Hoette, Jan Janik, Mark Kidger, Tomasz Kundera, Sebastian Kurowski, Alexis Liakos, Isa Mohammed, Kari Nilsson, Urszula Pajdosz, Vilppu Piirola, Tapio Pursimo, Brandon Rajkumar, Andrii O. Simon, Michal Siwak, Eda Sonbas, Ian A. Steele, Volodymir V. Vasylenko, Michal Zejmo, Pawel Zielinski
Publikováno v:
Galaxies, Vol 5, Iss 4, p 83 (2017)
We report optical photometric and polarimetric observations of the blazar OJ 287 gathered during 2016/17. The high level of activity, noticed after the General Relativity Centenary flare, is argued to be part of the follow-up flares that exhibited hi
Externí odkaz:
https://doaj.org/article/f62e823262d04e028ac9e84bfa1052d2
Autor:
Justyn Campbell-White, Carlo F. Manara, Aurora Sicilia-Aguilar, Antonio Frasca, Louise D. Nielsen, P. Christian Schneider, Brunella Nisini, Amelia Bayo, Barbara Ercolano, Péter Ábrahám, Rik Claes, Min Fang, Davide Fedele, Jorge Filipe Gameiro, Manuele Gangi, Ágnes Kóspál, Karina Maucó, Monika G. Petr-Gotzens, Elisabetta Rigliaco, Connor Robinson, Michal Siwak, Lukasz Tychoniec, Laura Venuti
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7f95d6cde2bd4694b0c30b48f004eca
http://arxiv.org/abs/2303.03843
http://arxiv.org/abs/2303.03843
Autor:
Juan M. Alcalá, Michal Siwak, Péter Ábrahám, L. Venuti, Frederick M. Walter, M. Gangi, J. Alonso-Santiago, Elvira Covino, H. M. J. Boffin, Antonio Frasca, Evelyne Alecian, Ágnes Kóspál, Sylvie Cabrit, K. N. Grankin, Gregory J. Herczeg, Min Fang, Carlo F. Manara
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, In press
HAL
Astronomy & Astrophysics
Astronomy and Astrophysics-A&A, EDP Sciences, In press
HAL
Astronomy & Astrophysics
We present results of our study of the close pre-main sequence spectroscopic binary CVSO 104 in Ori OB1, based on data obtained within the PENELLOPE legacy program. We derive, for the first time, the orbital elements of the system and the stellar par
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f65e74afd8b6d10241d550b8368c1c8
https://hal.archives-ouvertes.fr/hal-03428894/file/2109.06305.pdf
https://hal.archives-ouvertes.fr/hal-03428894/file/2109.06305.pdf
Autor:
Marek Drozdz, Diana P. Kjurkchieva, Slavek M. Rucinski, Michal Siwak, Dorota Kozieł-Wierzbowska, Ahmet Erdem, G. Stachowski, Andrzej S. Baran, Waldemar Ogloza, Dragomir Marchev, B. Zakrzewski, S. Szalankiewicz, Kosmas Gazeas, Alexios Liakos, Stanisław Zoła, J. M. Kreiner
This paper presents the results of a combined spectroscopic and photometric study of 20 contact binary systems: HV Aqr, OO Aql, FI Boo, TX Cnc, OT Cnc, EE Cet, RWCom, KR Com, V401 Cyg, V345 Gem, AK Her, V502 Oph, V566 Oph, V2612 Oph, V1363 Ori, V351
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60e8ea5ccfaa03d81981feb6e06f4196
Autor:
Péter Ábrahám, B. Seli, Sunkyung Park, A. Moór, Ágnes Kóspál, J. A. Acosta-Pulido, B. Cseh, Michal Siwak, Joel D. Green, Réka Könyves-Tóth, A. Ordasi, A. Pál, Jeong-Eun Lee, O. Hanyecz, Krisztián Sárneczky, Krisztián Vida, M. Krezinger, A. Szing, Zs. M. Szabó, G. Csörnyei, Róbert Szakáts, Levente Kriskovics
Publikováno v:
The Astrophysical Journal
Among the low-mass pre-main sequence stars, a small group called FU Orionis-type objects (FUors) are notable for undergoing powerful accretion outbursts. V1057 Cyg, a classical example of an FUor, went into outburst around 1969-1970, after which it f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2dc11f150aa02c6977edd95505e015ca
Autor:
Ian Miller, Diana P. Kjurkchieva, D. Pieńkowski, Andrzej S. Baran, Sunay Ibryamov, G. Apostolovska, K. Wiersema, P. Bruś, Marek Drozdz, Michal Siwak, L. Corp, Z. Garai, J. Menke, P. Wychudzki, A. Capetillo Blanco, Staszek Zola, J. Ribeiro, Waldemar Ogloza, D. Rodriguez, L. Logie, Bart Staels, Maciej Mikolajewski, E. Kardasis, D. Moździerski, J. Kare Trandem Qvam, M. Rodriguez, Noel D. Richardson, Cezary Galan, M. Biskupski, T. Kamiński, T. Kundera, Z. Donchev, M. Winiarski, M. Martignoni, Z. Kołaczkowski, L. Hambálek, I. Plauchu-Frayn, Toma Tomov, P. McDonald, I. Sergey, G. J. Conidis, E. Zahajkiewicz, Dinko Dimitrov, A. Armiński, T. Pribulla, Dragomir Marchev, E. Conseil, E. Świerczyński, Kosmas Gazeas, B. Dȩbski, Emil Kundra, Stoyanka Peneva, Andrzej Pigulski, F. Dubois, R. Kneip, A. Sanchez, David Boyd, J. L. Gonzalez Carballo, Evgeni Semkov, T. Smela, Paweł Kankiewicz, D. Kubicki, T. A. Heras, P. Pakońska, S. Dean
Context. EE Cep is one of few eclipsing binary systems with a dark, dusty disk around an invisible object similar to {\epsilon} Aur. The system is characterized by grey and asymmetric eclipses every 5.6 yr, with a significant variation in their photo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5cdf5c105697afde939ef9c7739a1b9d
https://ruj.uj.edu.pl/xmlui/handle/item/245329
https://ruj.uj.edu.pl/xmlui/handle/item/245329
In this study, we independently test the presence of an exoplanet around the binary KIC 9472174, which is composed of a red dwarf and a pulsating type B subdwarf. We also present the results of our search for Jupiter-mass objects orbiting near to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d8b13d65a3b1190fa39171c73fd4c3f
Publikováno v:
Astronomy & Astrophysics
We investigate small-scale light variations in V646 Pup occurring on different timescales with the aim to investigate whether this variability is similar to that observed in FU Ori. We observed V646 Pup at the SAAO and CTIO between 2013 and 2018 with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a758de7be7957f406dfbfe4334f7431
Autor:
Tapio Pursimo, Felix Hildebrandt, Eda Sonbas, Albert K. H. Kong, José L. Gómez, Marek Drozdz, Stefanie Komossa, Alexios Liakos, Achamveedu Gopakumar, Daniel E. Reichart, Katsura Matsumoto, Lankeswar Dey, A. Simon, Stefano Ciprini, Michal Siwak, Mauri Valtonen, Rene Hudec, Mark R. Kidger, Seppo Laine, Daniel B. Caton, Markus Mugrauer, Pauli Pihajoki, Kosmas Gazeas, Helen Jermak, Stanisław Zoła, S. Haque, Harry Lehto, V. Godunova
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
© 2020. The American Astronomical Society. All rights reserved.
Binary black hole (BH) central engine description for the unique blazar OJ 287 predicted that the next secondary BH impact-induced bremsstrahlung flare should peak on 2019 July 31.
Binary black hole (BH) central engine description for the unique blazar OJ 287 predicted that the next secondary BH impact-induced bremsstrahlung flare should peak on 2019 July 31.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1188466618a97c61274bc5861169eaea
https://ruj.uj.edu.pl/xmlui/handle/item/156089
https://ruj.uj.edu.pl/xmlui/handle/item/156089