Search Publications
Microquasar V404 Cyg /GS 2023+338: MASTER optical observations during the June and December 2015 super-outbursts
Rebolo, R.; Wang, X.; Buckley, D. A. H. +22 more
We present several thousands homogeneous photometric (WBVRI and polarization) observations of the microquasar black hole binary V404 Cyg, obtained by the MASTER Global Robotic Network (Lipunov et al. 2010). MASTER were the first telescopes to optically monitor the microquasar after its gamma-ray onset from 18 h 34 m 09 s UT on June 15, 2015 (), un…
First analysis of eight Algol-type binaries: EI Aur, XY Dra, BP Dra, DD Her, VX Lac, WX Lib, RZ Lyn, and TY Tri
Zasche, P.
The available photometry from the online databases were used for the first light curve analysis of eight eclipsing binary systems EI Aur, XY Dra, BP Dra, DD Her, VX Lac, WX Lib, RZ Lyn, and TY Tri. All these stars are of Algol-type, having the detached components and the orbital periods from 0.92 to 6.8 days. For the systems EI Aur and BP Dra the …
Spectroscopic observations of the interacting massive binary AQ Cassiopea
Ibanoglu, C.; Çakırlı, Ö.; Sipahi, E.
New spectroscopic observations of the double-lined eclipsing binary AQ Cas are presented. All available spectroscopic and photometric observations have been analysed for the fundamental properties of the components. Analyses show that the system consists of a massive primary with a mass of 17.63 ± 0.91 M⊙ and radius of 13.48 ± 0.64 R
The XMM-Newton slew view of IGRJ17361-4441: A transient in the globular cluster NGC 6388
Read, A. M.; Nucita, A. A.; De Paolis, F. +1 more
IGRJ17361-4441 is a hard transient recently observed by the INTEGRAL satellite. The source, close to the center of gravity of the globular cluster NGC 6388, quickly became the target of follow-up observations conducted by the Chandra, Swift/XRT and RXTE observatories. Here, we concentrate in particular on a set of observations conducted by the XMM…
A comprehensive study of six Algol type binaries
Liakos, A.; Zasche, P.; Niarchos, P.
CCD light curves of the Algol type eclipsing binaries DP Cep, AL Gem, FG Gem, UU Leo, CF Tau and AW Vul were analysed using the Wilson-Devinney code and new geometric and absolute parameters were derived. Due to cyclic apparent orbital period changes of the systems, probably caused by the Light-Time Effect, the contribution of a third light was ta…
The data mining III: An analysis of 21 eclipsing binary light-curves observed by the INTEGRAL/OMC
Zasche, P.
Twenty-one eclipsing binaries were selected for an analysis from a huge database of observations made by the INTEGRAL/OMC camera. The photometric data were processed and analyzed, resulting in a first light-curve study of these neglected eclipsing binaries. In several systems from this sample even their orbital periods have been confirmed or modif…
The data mining II: An analysis of 33 eclipsing binary light-curves observed by the INTEGRAL/OMC
Zasche, P.
Thirty-three eclipsing binaries were selected for an analysis from a huge database of observations made by the INTEGRAL/OMC camera. The photometric data were processed and analyzed, resulting in a first light-curve study of these neglected eclipsing binaries. The system CY Lac was discovered to be an eccentric one. In several systems from this sam…
The data mining: An analysis of 20 eclipsing binary light-curves observed by the INTEGRAL/OMC
Zasche, P.
Twenty eclipsing binaries were selected for an analysis from a huge database of observations made by the INTEGRAL/OMC camera. The photometric data were processed and analyzed, resulting in a first light-curve study of these neglected eclipsing binaries. Most of the selected systems are the detached ones. The system ET Vel was discovered to be an e…
The first light-curve analysis of eclipsing binaries observed by the INTEGRAL/OMC
Zasche, P.
Three Algol-type binaries in Cygnus constellation were selected for an analysis from a huge database of observations made by the INTEGRAL/OMC camera. These data were processed and analyzed, resulting in a first light-curve study of these neglected eclipsing binaries. The temperatures of the primary components range from 9500 K to 10,500 K and the …