Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Ivanka Stateva"'
Autor:
N. A. Tomov, U. Wolter, K. A. Stoyanov, Dragomir Marchev, M. F. Bode, V. D. Marchev, L. Iliev, R. K. Zamanov, Ivanka Stateva, Y. M. Nikolov
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 499:3650-3659
We present spectroscopic observations of the Be/X-ray binary X Per obtained during the period December 2017 - January 2020 (MJD~58095 - MJD~58865). In December 2017 the $H\alpha$, $H\beta$, and HeI 6678 emission lines were symmetric with violet-to-re
Publikováno v:
Astronomische Nachrichten. 341:453-461
Autor:
Aliz Derekas, N. Hatamkhani, D. W. Kurtz, T. Richey-Yowell, J. Pascual-Granado, P. Lampens, K. R. Pollard, Roland Vanderspek, A. García Hernández, Joyce A. Guzik, Ádám Sódor, Fangfei Shi, Catherine Lovekin, Zs. Bognár, Simon J. Murphy, Oleh Kobzar, Victoria Antoci, Viktor Khalack, Barry Smalley, A. Samadi-Ghadim, Dominic M. Bowman, A. David-Uraz, Derek Buzasi, E. Brunsden, M. Lares-Martiz, Oleg Kochukhov, Ivanka Stateva, T. Z. Yang, E. Niemczura, Dogus Ozuyar, Rasmus Handberg, P. Mikołajczyk, A. Ramón-Ballesta, T. S. Lambert, L. Fox-Machado, J. Sikora, P. Quitral-Manosalva, David Mkrtichian, Richard Monier, M. S. Cunha, Róbert Szabó, Daniel R. Hey, Daniel Luke Holdsworth, Ernst Paunzen
Publikováno v:
Digibug. Repositorio Institucional de la Universidad de Granada
instname
Digital.CSIC. Repositorio Institucional del CSIC
Holdsworth, D L, Cunha, M S, Kurtz, D W, Antoci, V, Hey, D R, Bowman, D M, Kobzar, O, Buzasi, D L, Kochukhov, O, Niemczura, E, Ozuyar, D, Shi, F, Szabó, R, Samadi-Ghadim, A, Bognár, Z, Fox-Machado, L, Khalack, V, Lares-Martiz, M, Lovekin, C C, Mikołajczyk, P, Mkrtichian, D, Pascual-Granado, J, Paunzen, E, Richey-Yowell, T, Sódor, Á, Sikora, J, Yang, T Z, Brunsden, E, David-Uraz, A, Derekas, A, Hernández, A G, Guzik, J A, Hatamkhani, N, Handberg, R, Lambert, T S, Lampens, P, Murphy, S J, Monier, R, Pollard, K R, Quitral-Manosalva, P, Ramón-Ballesta, A, Smalley, B, Stateva, I & Vanderspek, R 2021, ' TESS Cycle 1 observations of roAp stars with 2-min cadence data ', Monthly Notices of the Royal Astronomical Society, vol. 506, pp. 1073–1110 . https://doi.org/10.1093/mnras/stab1578
instname
Digital.CSIC. Repositorio Institucional del CSIC
Holdsworth, D L, Cunha, M S, Kurtz, D W, Antoci, V, Hey, D R, Bowman, D M, Kobzar, O, Buzasi, D L, Kochukhov, O, Niemczura, E, Ozuyar, D, Shi, F, Szabó, R, Samadi-Ghadim, A, Bognár, Z, Fox-Machado, L, Khalack, V, Lares-Martiz, M, Lovekin, C C, Mikołajczyk, P, Mkrtichian, D, Pascual-Granado, J, Paunzen, E, Richey-Yowell, T, Sódor, Á, Sikora, J, Yang, T Z, Brunsden, E, David-Uraz, A, Derekas, A, Hernández, A G, Guzik, J A, Hatamkhani, N, Handberg, R, Lambert, T S, Lampens, P, Murphy, S J, Monier, R, Pollard, K R, Quitral-Manosalva, P, Ramón-Ballesta, A, Smalley, B, Stateva, I & Vanderspek, R 2021, ' TESS Cycle 1 observations of roAp stars with 2-min cadence data ', Monthly Notices of the Royal Astronomical Society, vol. 506, pp. 1073–1110 . https://doi.org/10.1093/mnras/stab1578
We thank the anonymous referee for a careful reading of the manuscript. DLH acknowledges financial support from the Science and Technology Facilities Council (STFC) via grant ST/M000877/1. MSC acknowledges the support by FCT/MCTES through the researc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14c04df5a1f169bc9b2c3e777df87226
http://hdl.handle.net/10481/71174
http://hdl.handle.net/10481/71174
Publikováno v:
Astrophysical Bulletin. 72:16-23
We analyzed the spectra of a well known SB1 binary HD199892 for which the projected rotational velocity v sin i, introduced in the literature, significantly differs when determined from the lines of Ca II at 3933 A and ofMg II at 4481 A. Contrary to
Autor:
Jaymie M. Matthews, Dominic M. Bowman, Andrew Tkachenko, M. Lares-Martiz, Amir Hasanzadeh, Oleg Kochukhov, P. De Cat, E. Niemczura, Daniel R. Hey, L. A. Balona, Marek Skarka, P. Quitral-Manosalva, A. García Hernández, Daniel Luke Holdsworth, L. Fox-Machado, Juan Carlos Suárez, T. Richey-Yowell, M. S. Cunha, Zs. Bognár, Zhao Guo, Hossein Safari, J. M. Nemec, Ernst Paunzen, Werner W. Weiss, J. Pascual-Granado, Mário J. P. F. G. Monteiro, George R. Ricker, Derek Buzasi, Joshua Pepper, Ádám Sódor, P. Kołaczek-Szymański, Victoria Antoci, Róbert Szabó, Sara Seager, D. W. Kurtz, Barry Smalley, Gerald Handler, Ivanka Stateva, H. Ghasemi
Publikováno v:
Cunha, M S, Antoci, V, Holdsworth, D L, Kurtz, D W, Balona, L A, Bognar, Z, Bowman, D M, Guo, Z, Kolaczek-Szymanski, P A, Lares-Martiz, M, Paunzen, E, Skarka, M, Smalley, B, Sodor, A, Kochukhov, O, Pepper, J, Richey-Yowell, T, Ricker, G R, Seager, S, Buzasi, D L, Fox-Machado, L, Hasanzadeh, A, Niemczura, E, Quitral-Manosalva, P, Monteiro, M J P F G, Stateva, I, De Cat, P, Garcia Hernandez, A, Ghasemi, H, Handler, G, Hey, D, Matthews, J M, Nemec, J M, Pascual-Granado, J, Safari, H, Suarez, J C, Szabo, R, Tkachenko, A & Weiss, W W 2019, ' Rotation and pulsation in Ap stars : first light results from TESS sectors 1 and 2 ', Monthly Notices of the Royal Astronomical Society, vol. 487, no. 3, pp. 3523-3549 . https://doi.org/10.1093/mnras/stz1332
Digital.CSIC. Repositorio Institucional del CSIC
instname
arXiv
Monthly Notices of the Royal Astronomical Society
Digital.CSIC. Repositorio Institucional del CSIC
instname
arXiv
Monthly Notices of the Royal Astronomical Society
We present the first results from the Transiting Exoplanet Survey Satellite (TESS) on the rotational and pulsational variability of magnetic chemically peculiar A-type stars. We analyse TESS 2-min cadence data from sectors 1 and 2 on a sample of 83 s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a20bb7023cee1c7dec9e1899aea1d10d
https://eprints.keele.ac.uk/6524/1/stz1332.pdf
https://eprints.keele.ac.uk/6524/1/stz1332.pdf
We present results of a study of the variability of the marginal Am star HD\,176843 observed in the {\it Kepler} field. {\it Kepler} photometry and ground-based spectroscopy are used to investigate the light variations of the star. HD\,176843 is clas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::624ad375c17578438d6cfef839176d4c
http://arxiv.org/abs/1904.00367
http://arxiv.org/abs/1904.00367
Publikováno v:
Astrophysical Bulletin. 71:199-207
The axial rotation of a star plays an important role in its evolution, the physical conditions in its atmosphere and the appearance of its spectrum.We analyzed the CCD spectra of two stars for which their projected rotational velocity differs remarka
Publikováno v:
EPJ Web of Conferences, Vol 152, p 05004 (2017)
The high precision data obtained by the {\it Kepler} satellite allows us to detect hybrid type pulsator candidates more accurately than the data obtained by ground-based observations. In this study, we present preliminary results on the new analysis
Publikováno v:
New Astronomy. 30:28-31
We present results of an asteroseismic study on the $\gamma$ Dor type {\it Kepler} target KIC\,6462033. {\it Kepler} photometry is used to derive the frequency content and principal modes. High-dispersion ground-based spectroscopy is also carried out
Publikováno v:
The Astronomical Journal. 157:73
Photometric and spectral observations of the W UMa binaries NSVS 4161544 and 1SWASP J034501.24+493659.9 with periods of around 8 hr are presented. The simultaneous light-curve and radial-velocity-curve solutions revealed that the two targets have ove