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pro vyhledávání: '"S.S. Doğru"'
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Autor:
Esin Soydugan, S.S. Doğru, Candan Çiçek, O. Demircan, F. Alicavus, Faruk Soydugan, Ahmet Erdem
Publikováno v:
New Astronomy. 16:498-502
This paper presents new CCD Bessell BVRI light curves and photometric analysis of the Algol-type binary star TX Her. The CCD observations were carried out at Canakkale Onsekiz Mart University Observatory in 2010. New BVRI light curves from this study
Publikováno v:
New Astronomy. 15:628-636
We investigated the orbital period variations of five neglected Algol-type eclipsing binaries (RW Cet, BO Gem, DG Lac, SW Oph and WY Per) in this study Their O-C diagrams display tilted sinusoidal variations superimposed on upward parabolic forms The
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 397:1647-1660
New high-resolution spectra, of the chromospherically active binary system CF Tuc, taken at the Mt. John University Observatory in 2007, were analyzed using two methods: cross-correlation and Fourier--based disentangling. As a result, new radial velo
Autor:
Faruk Soydugan, Ahmet Erdem, Y. Kaçar, Edwin Budding, S.S. Doğru, D. Doğru, Hicran Bakiş, M. Tüysüz, Esin Soydugan, A. Donmez
Publikováno v:
New Astronomy. 14:545-555
We present new multiband CCD photometric observations of three chromospherically active stars with long periods (V2075 Cyg, FG UMa and BM CVn). The observations were made at the Canakkale Onsekiz Mart University Observatory in 2006 and 2007. We analy
Autor:
Kosmas Gazeas, L. O. Takalo, Seppo Mikkola, Mauri Valtonen, Marek Drozdz, J. L. Prieto, Harry Lehto, David W. Atlee, P. G. Niarchos, M. Kurpinska-Winiarska, Gary Poyner, M. Nissinen, Kari Nilsson, Molly S. Peeples, Jin Wu, Carolin Villforth, S.S. Doğru, Alexios Liakos, Waldemar Ogloza, Dragomir Marchev, Elina Lindfors, Darren L. DePoy, Staszek Zola, Roberto J. Assef, Michal Siwak, Xu Zhou, Jennifer C. Yee, Dorota Kozieł, Jonathan C. Bird, M. Winiarski, J. M. Ohlert, A. Mattingly, A. Sillanpää, V.-P. Hentunen, T. Pursimo, M. R. Kidger, Jason D. Eastman, M. Dietrich, Jochen Heidt, Lorna Watson, Kozo Sadakane
Publikováno v:
The Astrophysical Journal. 698:781-785
The blazar OJ 287 has produced two major optical outburst events during the years 2005-2008. These are the latest in a series of outbursts that have occurred repeatedly at 12 year intervals since early 1900s. It has been possible to explain the histo
Autor:
M. Tüysüz, Faruk Soydugan, Candan Çiçek, Edwin Budding, Zeki Eker, S.S. Doğru, Ahmet Erdem, D. Doğru, Y. Kaçar, Hicran Bakiş, O. Demircan, A. Donmez, Esin Soydugan
Publikováno v:
New Astronomy. 14:109-120
We present a photometric study of three chromospherically active stars with long periods (V340 Gem, SAO 62042 and FI Cnc). The observations were made at the COMU Observatory in 2006 and 2007. We have made initial photometric analyses of V340 Gem and
Publikováno v:
New Astronomy. 12:613-621
We present the first study of the orbital period variations of five neglected Algol-type eclipsing binaries TT And , V342 Aql , RW Cap , BZ Cas and TW Lac , using their O–C diagrams gathered from all available times of eclipse minima. These O–C d
Autor:
Esin Soydugan, Faruk Soydugan, S.S. Doğru, F. Alicavus, Candan Çiçek, O. Demircan, Ahmet Erdem
This study presents an investigation of the orbital period variations of five Algol type binaries, UX Leo, RW Mon, EQ Ori, XZ UMa and AX Vul based on all available minima times. The O-C diagrams of all systems exhibit a periodic variation superimpose
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b85a8f3e9c15eb79004968bdc01b54c1
https://aperta.ulakbim.gov.tr/record/22873
https://aperta.ulakbim.gov.tr/record/22873
Autor:
A. Donmez, S. Haque, Jerzy Krzesiński, Marek Drozdz, T. Kundera, Jennifer C. Yee, A. Mattingly, T. Pursimo, Kosmas Gazeas, Andrei Berdyugin, Xu Zhou, L. O. Takalo, Jochen Heidt, A. Aungwerojwit, V.-P. Hentunen, Nils Bergvall, Jonathan C. Bird, Elina Lindfors, Waldemar Ogloza, M. Kurpinska-Winiarska, Michal Siwak, Roberto J. Assef, Carolin Villforth, William C. Keel, J. L. Prieto, S. A. Coggins-Hill, M. Winiarski, J. M. Ohlert, Dorota Kozieł-Wierzbowska, K. Nilsson, C. Porowski, A. Kuzmicz, Dragomir Marchev, L. Watson, P. G. Niarchos, S.S. Doğru, David W. Atlee, M. Kamada, M. Dietrich, Molly S. Peeples, Alexios Liakos, Darren L. DePoy, Kozo Sadakane, Jin Wu, M. Pasanen, Y. Efimov, M. Nissinen, Jason D. Eastman
(Abridged) OJ287 is a BL Lac object that has shown double-peaked bursts at regular intervals of ~12 yr during the last ~40 yr. We analyse optical photopolarimetric monitoring data from 2005-2009, during which the latest double-peaked outburst occurre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5229ed317f74ec8bb64955b0f44e7b1