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Close-in companions to contact binary stars
progresses on searching for close-in companions to contact binary stars, includingW UMa-type contact binaries are composed of two late-type main-sequence stars for their origin is that the angular momentu...
BN - Astronomie a nebeská mechanika, astrofyzika
- 2013 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Binary systems at and beyond the short-period limit of WUMa systems
-mass stars. In the past several years, we have monitored some close binaries belowThe short-period limit of W UMa-type contact binaries of about 0.22 days is very sharp and well defined. Observations and investiga...
BN - Astronomie a nebeská mechanika, astrofyzika
- 2014 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Northern Binaries in the Evrena Project
In the framework of the EVRENA project, high-resolution spectra. of northern eclipsing close binaries in stellar groups are obtained with the HERMES Echelle spectrograph at the Mercator telescope (Roque de los Muchachos Observatory)...
BN - Astronomie a nebeská mechanika, astrofyzika
- 2012 •
- D •
- Link
Rok uplatnění
D - Stať ve sborníku
Výsledek na webu
A 10-Day Binary System Orbiting the Be Star 66 Oph
66 Oph is a multiple system with a close binary orbiting the B2Ve primary Be star. The binary parameters were derived by two independent methods and spectra of components BA and BB were separated by Fourier-disenta...
BN - Astronomie a nebeská mechanika, astrofyzika
- 2004 •
- D
Rok uplatnění
D - Stať ve sborníku
Hypervelocity stars from young stellar clusters in the Galactic Centre
The enormous velocities of the so-called hypervelocity stars (HVSs) derive, likely, from close interactions with massive black holes, binary stars encounters stars will move close to the initial c...
Astronomy (including astrophysics,space science)
- 2017 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Search for forced oscillations in binaries.
An analysis of new spectroscopic and photoelectric UBV observations, satisfactorily covering the whole orbital period of V436Per, together with existing data allowed us to improve the knoweledge of the basic physical characteristics of the binary...
BN - Astronomie a nebeská mechanika, astrofyzika
- 2003 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Shaking the Pot of Modelling Tools: Some Open Problems in the Field
To inspire and provoke lively discussions, I argue that the accuracy of the basic physical properties of stars, based on analyses of well-observed detached binaries, might be worse than usually believed. I offer some ways how to dea...
BN - Astronomie a nebeská mechanika, astrofyzika
- 2012 •
- D •
- Link
Rok uplatnění
D - Stať ve sborníku
Výsledek na webu
Planets and Brown Dwarfs Orbiting Evolved Binaries
Searches for planets and brown dwarf companions to evolved close binary stars (e.g., detached WD+dM binaries, sdB-type eclipsing binaries, magnetic CVs, and X extrasolar planets around binary ...
BN - Astronomie a nebeská mechanika, astrofyzika
- 2015 •
- D
Rok uplatnění
D - Stať ve sborníku
Abundances from Disentangled Component Spectra of Close Binary Stars: An Observational Test of an Early Mixing in High-Mass Stars
Recent theoretical calculations of stellar evolutionary tracks for rotating high-mass stars suggest that the chemical composition of the surface layers changes even whilst the star is evolving on the MS. The abundances analysis of <...
BN - Astronomie a nebeská mechanika, astrofyzika
- 2006 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Zdeněk Kopal's Binary Star Legacy - Preface
An international conference entitled "Zdenek Kopal's Binary Star Legacy to the exploration of close binary systems, initiated a breakthrough in this field with his description of binary components as non-s...
BN - Astronomie a nebeská mechanika, astrofyzika
- 2005 •
- D
Rok uplatnění
D - Stať ve sborníku
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