Results 31 to 40 of about 1,008,045 (157)

Signals of the QCD Phase Transition in the Heavens [PDF]

, 2007
The modern phase diagram of strongly interacting matter reveals a rich structure at high-densities due to phase transitions related to the chiral symmetry of quantum chromodynamics (QCD) and the phenomenon of color superconductivity.
Schaffner-Bielich, Jürgen
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The impact of binary stars in the determination of the total mass of stellar system. [PDF]

, 2022
Binary stars play a very important role in the dynamics of stellar systems such as star clusters. After a detailed analysis of binary classification, formation mechanisms and both fundamental parameters and distributions, the impact of binaries in the
Pianta, Camilla
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Orbits of Twelve Multiple Stars

The Astronomical Journal
Inner and outer orbits in 12 hierarchical stellar systems are determined using high-resolution speckle imaging, radial velocities, or both. Masses and fluxes of the components are estimated. The Hipparcos numbers of the main stars are 7111, 12912, 17895,
Andrei Tokovinin
doaj   +1 more source

Equilibria and oscillations of magnetised neutron stars

, 2010
We investigate equilibrium configurations and oscillation spectra of neutron stars,modelled as rotating magnetised fluid bodies in Newtonian gravity. We also explorethe idea that these model neutron stars could have dynamics analogous to rigid-bodyfree ...
Lander, Samuel Kenneth
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Prominences and magnetic activity on young single and binary stars [PDF]

, 2008
In this thesis I study the magnetic activity of young stars via observations of stellar prominences on single stars and by applying the Zeeman Doppler imaging (ZDI) technique to map the magnetic fields and measure differential rotation of a young binary ...
Dunstone, Nicholas J.
core   +1 more source

Contact-binary Evolution with Energy Transfer and Saturated Magnetic Braking

The Astrophysical Journal
The evolution of low-mass contact binaries is influenced by angular momentum loss, mass and energy transfer (ET), and the nuclear evolution of the components.
Matthias Fabry, Andrej Prša
doaj   +1 more source

Binary black holes from population III stars. [PDF]

, 2022
openIn this thesis I evaluate the merger rate density of binary black holes from Population III stars. This work takes into consideration different models for the stellar system's initial conditions and for the star formation rate density.
MERLI, LORENZO
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Eclipse Depth Variations in Seven Eclipsing Binaries as Observed by KELT and TESS

The Astronomical Journal
A set of eclipsing binary systems exhibit a changing inclination over time due to the gravitational influence of a third stellar companion. These changing inclinations manifest in photometric observations over time as eclipse depth variations.
Anna C. Baum, Joshua Pepper, James R. A. Davenport, Steve B. Howell   +3 more
doaj   +1 more source

XMM-Newton X-ray study of early type stars in the Carina OB1 association [PDF]

, 2007
<p><b>Aims:</b> X-ray properties of the stellar population in the Carina OB1 association are examined with special emphasis on early-type stars.
I. I. Antokhin, J. C. Brown, Rauw, G., G. Rauw, J.-M. Vreux, Antokhin, I. I., Antokhin, I.I., Brown, J.C., van der Hucht, K.A., Rauw, Grégor, K. A. van der Hucht, Vreux, Jean-Marie, Vreux, J.M., van der Hucht, K. A., Brown, J. C.   +14 more
core   +2 more sources

Detection of Semidetached Eclipsing Binaries from TESS

The Astronomical Journal
Semidetached binaries, distinguished by their mass transfer phase, play a crucial role in elucidating the physics of mass transfer within interacting binary systems.
Xu Ding, KaiFan Ji, QiYuan Cheng, ZhiMing Song, JinLiang Wang, XueFen Tian, ChuanJun Wang   +6 more
doaj   +1 more source