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In this paper, we estimated the physical and geometrical characteristics of the visually close binary stellar system Hip 45571, using Al-Wardat's method for analyzing binary and multiple stellar systems. We estimated the physical properties…

The perfect physical and geometrical parameters of the main-sequence close visual binary system (CVBS), HIP\,105947, are explicitly presented. These parameters have been constructed conclusively using Al-Wardat's complex method for…

Solar and Stellar Astrophysics · Physics 2019-04-03 Suhail G. Masda , Mashhoor A. Al-Wardat , J. M. Pathan

The data release DR2 of Gaia mission was of great help in precise determination of fundamental parameters of Close Visual Binary and Multiple Systems (CVBMSs), especially masses of their components, which are crucial parameters in…

Atmospheric modeling and dynamical analysis of the components of the visually close binary system (VCBS) HD6009 were used to estimate their individual physical and geometrical parameters. Model atmospheres were constructed using a grid of…

Solar and Stellar Astrophysics · Physics 2021-11-22 M. A. Al-Wardat

This study utilizes "Al-Wardat's method for analysing binary and multiple stellar systems" to estimate a set of parameters for the triple system Hip70868. The method compares the system's observational magnitudes, color indices, and…

Solar and Stellar Astrophysics · Physics 2025-11-04 Hoda E. Elgendy , Mashhoor A. Al-Wardat , Hassan B. Haboubi , Lin R. Benchi , Abdallah M. Hussein , Hussein M. Elmehdi

We present the complete set of physical and geometrical parameters of the visual close binary system GJ\,9830 for the first time by using Al-Wardat's complex method. This method combines magnitude difference from speckle interferometry,…

Solar and Stellar Astrophysics · Physics 2019-07-24 Suhail G. Masda , Mashhoor A. Al-Wardat , J. M. Pathan

Atmospheric modelling of the components of the visually close binary systems Hip70973 and Hip72479 was used to estimate the individual physical parameters of their components. The model atmospheres were constructed using a grid of Kurucz…

Solar and Stellar Astrophysics · Physics 2015-06-04 Mashhoor Al-Wardat

In this paper, we present the analysis of the stellar system HIP 101227 to determine the actual number of components in the system, and their properties. We use dynamical modeling and complex spectrophotometric (involving atmospheric…

Model atmospheres of the close visual binary star COU1511 (HIP12552) are constructed using grids of Kuruz's blanketed models to build the individual synthetic SEDs for both components. These synthetic SED's are combined together for the…

Solar and Stellar Astrophysics · Physics 2016-11-09 Mashhoor A. Al-Wardat , M. H. El-Mahameed , Nihad A. Yusuf , Awni M. Khasawneh , Suhail G. Masda

Analyses of multi-epoch, high-resolution (R ~ 50.000) optical spectra of the O-type star HD 152246 (O9 IV according to the most recent classification), complemented by a limited number of earlier published radial velocities, led to the…

Solar and Stellar Astrophysics · Physics 2015-06-22 A. Nasseri , R. Chini , P. Harmanec , P. Mayer , J. A. Nemravová , T. Dembsky , H. Lehmann , H. Sana , J. -B. Le Bouquin

We present a complete analysis of the individual components of the ABC visual triple system HIP 32475. AB pair was discovered during the Hipparcos mission, with a separation of 412 mas. Later, in 2015, a third component was added to the…

Solar and Stellar Astrophysics · Physics 2023-04-10 Abdallah M. Hussein , Enas M. Abu-Alrob , Fatima M. Alkhateri , Mashhoor A. Al-Wardat

We present the detailed fundamental stellar parameters of the close visual binary system; HD39438 for the first time. We used Al-Wardat's method for analyzing binary and multiple stellar systems (BMSSs). The method implements Kurucz's plane…

Solar and Stellar Astrophysics · Physics 2023-07-10 Suhail Masda , Z. T. Yousef , Mashhoor Al-Wardat , Awni Al-Khasawneh

An accident of misidentification has brought to light the interesting system HD 191588, a new RS CVn-type spectroscopic binary. A radial-velocity study of the primary star, the only seen component, carried out at the Observatoire de…

Astrophysics · Physics 2008-11-26 Roger R. F. Griffin , Nicole Ginestet , Jean-Michel Carquillat

HD 181068 is the brighter of the two known triply eclipsing hierarchical triple stars in the Kepler field. It has been continuously observed for more than 2 years with the Kepler space telescope. Of the nine quarters of the data, three have…

We present the physical and geometrical parameters of the individual components of the close visual double-lined spectroscopic binary system Gliese 762.1, which were estimated using Al-Wardat's complex method for analyzing close visual…

Solar and Stellar Astrophysics · Physics 2016-07-13 Suhail G. Masda , Mashhoor A. Al-Wardat , Ralph Neuhäuser , Hamid M. Al-Naimiy

We used very long baseline interferometry to constrain the orbit of the binary system 2MASS J05082729-2101444. We observed the system with the VLBA in three epochs at a frequency of 4.85 GHz, which provides an angular resolution of about 3…

We present a study of the orbits of the triple system LHS1070, with the aim to determine individual masses of its components. Sixteen new relative astrometric positions of the three components in the K band were obtained with NACO at the…

Solar and Stellar Astrophysics · Physics 2012-03-29 R. Köhler , T. Ratzka , Ch. Leinert

A complete astrophysical and dynamical study of the close visual binary system (CVBS) (A7V + F0V), Finsen 350, is presented. Beginning with the entire observational spectral energy distribution (SED) and the magnitude difference between the…

Solar and Stellar Astrophysics · Physics 2018-02-13 M. A. Al-Wardat , J. A. Docobo , A. A. Abushattal , P. P. Campo

In an effort to determine accurate orbital and physical properties of a large number of bright stars, a method was developed to fit simultaneously stellar parameters (masses, luminosities, effective temperatures), distance, and orbits to…

Solar and Stellar Astrophysics · Physics 2024-10-21 Dinko Nazor , Andrei Tokovinin

We report on Keck Interferometer observations of the double-lined binary (B) component of the quadruple pre-main sequence (PMS) system HD 98800. With these interferometric observations combined with astrometric measurements made by the…

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