Zobrazeno 1 - 10
of 187
pro vyhledávání: '"Marek Wolf"'
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 2, p 114 (2024)
Very Large Telescope/UVES spectroscopic and Transiting Exoplanet Survey Satellite (TESS) photometric observations for WASP 0346-21 allow the direct determination of its physical properties, along with the detection of a circumbinary object and oscill
Externí odkaz:
https://doaj.org/article/c27a064e0e9147e49a2a00f03eba9606
Autor:
J. Grace Clark, Kamil Hornoch, Allen W. Shafter, Hana Kučáková, Jan Vraštil, Peter Kušnirák, Marek Wolf
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 272, Iss 2, p 28 (2024)
The results of a two-decade-long R -band photometric survey of novae in M31 are presented. From these data, R -band light curves have been determined for 180 novae with data sufficient for estimating the peak brightness and subsequent rate of decline
Externí odkaz:
https://doaj.org/article/9ce8469affd84436b180f66132af15b7
Autor:
Jaroslav Merc, Rudolf Gális, Marek Wolf, Pavol A. Dubovský, Jan Kára, Forrest Sims, James R. Foster, Tomáš Medulka, Christophe Boussin, John P. Coffin, Christian Buil, David Boyd, Jacques Montier
Publikováno v:
The Astronomical Journal, Vol 166, Iss 2, p 65 (2023)
V503 Her was previously proposed as an eclipsing symbiotic candidate based on photometric behavior and spectroscopic appearance indicating the composite optical spectrum. To investigate its nature, we analyzed long-term photometric observations cover
Externí odkaz:
https://doaj.org/article/71d183db26a1492ea140e47ccebdb23a
Autor:
Jan Kára, Sergey Zharikov, Marek Wolf, Ainash Amantayeva, Gulnur Subebekova, Serik Khokhlov, Aldiyar Agishev, Jaroslav Merc
Publikováno v:
The Astrophysical Journal, Vol 950, Iss 1, p 47 (2023)
We present a new study of the Z Cam-type eclipsing cataclysmic variable AY Piscium with the aim of determining the fundamental parameters of the system and the structure of the accretion flow therein. We use time-resolved photometric observations sup
Externí odkaz:
https://doaj.org/article/b638adbba65b4b999925ad2668ff9286
Publikováno v:
The Astronomical Journal, Vol 165, Iss 4, p 159 (2023)
We report results from the TESS photometric data and new high-resolution spectra of the Algol system X Tri showing short-period pulsations. From the echelle spectra, the radial velocities of the eclipsing pair were measured, and the rotational rate a
Externí odkaz:
https://doaj.org/article/20d9435770fb48949ccf81420af46811
Autor:
Alexei Kourbatov, Marek Wolf
Publikováno v:
Mathematics, Vol 7, Iss 5, p 400 (2019)
Let q > r ≥ 1 be coprime integers. Let P c = P c ( q , r , H ) be an increasing sequence of primes p satisfying two conditions: (i) p ≡ r (mod q) and (ii) p starts a prime k-tuple with a given pattern H. Let π c ( x ) be the number of primes in
Externí odkaz:
https://doaj.org/article/7fa146c204554937ba41a1995021ab71
Autor:
S. V. Zharikov, M. S. Hernandez, G. H. Tovmassian, S. A. Khokhlov, G. Subebekova, Hana Kučáková, Marek Wolf, Vitaly Neustroev
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 497:1475-1487
We obtained photometric observations of the nova-like cataclysmic variable RW Tri and gathered all available AAVSO and other data from the literature. We determined the system parameters and found their uncertainties using the code developed by us to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ce49245b62137bf2838895b6756c93f
https://doi.org/10.1093/mnras/staa2091
https://doi.org/10.1093/mnras/staa2091
Autor:
Allen W. Shafter, Kamil Hornoch, Hana Kučáková, Jingyuan Zhao, Mi Zhang, Xing Gao, John Della Costa, William A. Burris, J. Grace Clark, Marek Wolf, Petr Zasche
The M31 recurrent nova M31N 1926-07c has had five recorded eruptions. Well-sampled light curves of the two most recent outbursts, in January of 2020 (M31N 2020-01b) and September 2022 (M31N 2022-09a), are presented showing that the photometric evolut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa5c7a78963648bebb0bbf25c05d4350
Autor:
Jan Kára, Hana Kučáková, A. L. Medina Rodriguez, Martin Mašek, S. V. Zharikov, Marek Wolf, Petr Cagas
Context. We present a new study of the eclipsing cataclysmic variable CzeV404 Her (Porb = 0.098 d) that is located in the period gap. Aims. This report determines the origin of the object and the system parameters and probes the accretion flow struct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3662de1b3a50e5c6dd9a273af92a0df2
http://arxiv.org/abs/2107.02664
http://arxiv.org/abs/2107.02664
Publikováno v:
Astronomische Nachrichten. 340:598-606
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2749b002aeb001ca72c258c80a23c445
https://doi.org/10.1002/asna.201913662
https://doi.org/10.1002/asna.201913662