K. Pavlovski
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View article: Orbital and Physical Properties of the Pleiades Binary 27 Tau (Atlas)
Orbital and Physical Properties of the Pleiades Binary 27 Tau (Atlas) Open
We report new spectroscopic and interferometric observations of the Pleiades binary star Atlas, which played an important role nearly 3 decades ago in settling the debate over the distance to the cluster from ground-based and space-based d…
View article: Observational mapping of the mass discrepancy in eclipsing binaries. A new self-contained framework for concurrent analysis of photometric and spectroscopic time series
Observational mapping of the mass discrepancy in eclipsing binaries. A new self-contained framework for concurrent analysis of photometric and spectroscopic time series Open
The mass discrepancy problem, observed in high-mass stars within eclipsing binaries, highlights systematic differences between dynamical and evolutionary mass estimates, challenging the accuracy of stellar evolution models. We aim to deter…
View article: KIC 4150611: A quadruply eclipsing heptuple star system with a <i>g</i>-mode period-spacing pattern
KIC 4150611: A quadruply eclipsing heptuple star system with a <i>g</i>-mode period-spacing pattern Open
Context. KIC 4150611 is a high-order multiple composed of a triple system. It comprises: (1) a F1V primary (Aa) that is eclipsed on a 94.2d period by a tight 1.52d binary composed of two dim K/M dwarfs (Ab1 and Ab2), which also eclipse eac…
View article: KIC 4150611: A quadruply eclipsing heptuple star system with a g-mode period-spacing pattern Eclipse modelling of the triple and spectroscopic analysis
KIC 4150611: A quadruply eclipsing heptuple star system with a g-mode period-spacing pattern Eclipse modelling of the triple and spectroscopic analysis Open
KIC 4150611 is a high-order multiple composed of a triple system composed of the F1V primary (Aa), which is eclipsed on a 94.2d period by a tight 1.52d binary composed of two dim K/M dwarfs (Ab1, Ab2), which also eclipse each other; an 8.6…
View article: Observational mapping of the mass discrepancy in eclipsing binaries: Selection of the sample and its photometric and spectroscopic properties
Observational mapping of the mass discrepancy in eclipsing binaries: Selection of the sample and its photometric and spectroscopic properties Open
Context . Eclipsing spectroscopic double-lined binaries are the prime source of precise and accurate measurements of masses and radii of stars. These measurements provide a stringent test for models of stellar evolution that are consistent…
View article: Observational mapping of the mass discrepancy in eclipsing binaries: Selection of the sample and its photometric and spectroscopic properties
Observational mapping of the mass discrepancy in eclipsing binaries: Selection of the sample and its photometric and spectroscopic properties Open
Abridged. Eclipsing spectroscopic double-lined binaries are the prime source of precise and accurate measurements of masses and radii of stars. These measurements provide a stringent test of models of stellar evolution that are persistentl…
View article: The enigmatic multiple star VV Ori
The enigmatic multiple star VV Ori Open
New photometry, including TESS data, have been combined with recent spectroscopic observations of the Orion Ib pulsating triple-star system VV Ori. This yields a revised set of absolute parameters with increased precision. Two different pr…
View article: The enigmatic multiple star VV Ori
The enigmatic multiple star VV Ori Open
New photometry, including TESS data, have been combined with recent spectroscopic observations of the Orion Ib pulsating triple-star system VV Ori. This yields a revised set of absolute parameters with increased precision. Two different pr…
View article: Physical properties of the eclipsing binary KIC 9851944 and analysis of its tidally perturbed p- and g-mode pulsations
Physical properties of the eclipsing binary KIC 9851944 and analysis of its tidally perturbed p- and g-mode pulsations Open
Stars that are both pulsating and eclipsing offer an important opportunity to better understand many of the physical phenomena that occur in stars, because it is possible to measure the pulsation frequencies of stars for which the masses a…
View article: Physical properties of the eclipsing binary KIC 9851944 and analysis of its tidally-perturbed p- and g-mode pulsations
Physical properties of the eclipsing binary KIC 9851944 and analysis of its tidally-perturbed p- and g-mode pulsations Open
Stars that are both pulsating and eclipsing offer an important opportunity to better understand many of the physical phenomena that occur in stars, because it is possible to measure the pulsation frequencies of stars for which the masses a…
View article: High-mass eclipsing binaries: A testbed for models of interior structure and evolution
High-mass eclipsing binaries: A testbed for models of interior structure and evolution Open
Aims. The surface chemical compositions of stars are affected by physical processes that bring the products of thermonuclear burning to the surface. Despite their potential in helping us understand the structure and evolution of stars, ele…
View article: Tidal perturbations and eclipse mapping in the pulsations in the hierarchical triple system U Gru
Tidal perturbations and eclipse mapping in the pulsations in the hierarchical triple system U Gru Open
Context. Unambiguous examples of the influence of tides on self-excited, free stellar pulsations have recently been observationally detected in space-based photometric data. Aims. We aim to investigate U Gru and contextualise it within the…
View article: δ Scuti pulsations in the bright Pleiades eclipsing binary HD 23642
δ Scuti pulsations in the bright Pleiades eclipsing binary HD 23642 Open
We announce the discovery of pulsations in HD 23642, the only bright eclipsing system in the Pleiades, based on light curves from the Transiting Exoplanet Survey Satellite (TESS). We measure 46 pulsation frequencies and attribute them to δ…
View article: KIC 7955301: A hierarchical triple system with eclipse timing variations and an oscillating red giant
KIC 7955301: A hierarchical triple system with eclipse timing variations and an oscillating red giant Open
KIC 7955301 is a hierarchical triple system with clear eclipse timing and depth variations that was discovered by the Kepler satellite during its original mission. It is composed of a non-eclipsing primary star at the bottom of the red gia…
View article: Tidal perturbations and eclipse mapping in the pulsations in the hierarchical triple system U~Gru
Tidal perturbations and eclipse mapping in the pulsations in the hierarchical triple system U~Gru Open
Context. Unambiguous examples of the influence of tides on self-excited, free stellar pulsations have recently been observationally detected in space-based photometric data. Aims. We aim to investigate U Gru and contextualise it within the…
View article: Dynamical parallax, physical parameters, and evolutionary status of the components of the bright eclipsing binary <i>α</i> Draconis
Dynamical parallax, physical parameters, and evolutionary status of the components of the bright eclipsing binary <i>α</i> Draconis Open
Aims. Both components of the bright eclipsing binary α Dra have been resolved using long baseline interferometry and the secondary component has been shown to contribute approximately 15% of the total flux; however, a spectroscopic detecti…
View article: Dynamical parallax, physical parameters and evolutionary status of the components of the bright eclipsing binary {\alpha} Draconis.
Dynamical parallax, physical parameters and evolutionary status of the components of the bright eclipsing binary {\alpha} Draconis. Open
Altough both components of the bright eclipsing binary $\\alpha$ Dra having\nbeen resolved using long baseline interferometry and the secondary component\nshown to contribute some 15\\% of the total flux, a spectroscopic detection of\nthe …
View article: The surface brightness–colour relations based on eclipsing binary stars and calibrated with<i>Gaia</i>EDR3
The surface brightness–colour relations based on eclipsing binary stars and calibrated with<i>Gaia</i>EDR3 Open
Aims. The surface brightness–colour relation (SBCR) is a basic tool for establishing precise and accurate distances within the Local Group. Detached eclipsing binary stars with accurately determined radii and trigonometric parallaxes allow…
View article: \nWeighing stars from birth to death: mass determination methods across the HRD
\nWeighing stars from birth to death: mass determination methods across the HRD Open
\n Contains fulltext :\n 234292.pdf (Publisher’s version ) (Closed access)\n \n Contains fulltext :\n 234292pre.pdf (Author’s version preprint ) (Open Access)\n
View article: A β Cephei pulsator and a changing orbital inclination in the high-mass eclipsing binary system VV Orionis
A β Cephei pulsator and a changing orbital inclination in the high-mass eclipsing binary system VV Orionis Open
We present an analysis of the high-mass eclipsing binary system VV Ori based on photometry from the TESS satellite. The primary star (B1 V, 9.5 $\, {\rm M}_\odot$) shows β Cephei pulsations and the secondary (B7 V, 3.8 $\, {\rm M}_\odot$) …
View article: Discovery of β Cep pulsations in the eclipsing binary V453 Cygni
Discovery of β Cep pulsations in the eclipsing binary V453 Cygni Open
V453 Cyg is an eclipsing binary containing 14 and 11 $\, {\rm M}_\odot$ stars in an eccentric short-period orbit. We have discovered β Cep-type pulsations in this system using Transiting Exoplanet Survey Satellite data. We identify seven s…
View article: The mass discrepancy in intermediate- and high-mass eclipsing binaries: The need for higher convective core masses
The mass discrepancy in intermediate- and high-mass eclipsing binaries: The need for higher convective core masses Open
Context. Eclipsing, spectroscopic double-lined binary star systems are excellent laboratories for calibrating theories of stellar interior structure and evolution. Their precise and accurate masses and radii measured from binary dynamics o…
View article: Modelling of the B-type binaries CW Cephei and U Ophiuchi A critical view on dynamical masses, core boundary mixing, and core mass
Modelling of the B-type binaries CW Cephei and U Ophiuchi A critical view on dynamical masses, core boundary mixing, and core mass Open
sponsorship: We thank the referee for the helpful comments that have improved the manuscript. We thank Dr. Dominic Bowman and Prof. Hugues Sana for the discussions pertaining to error determination. The research leading to these results ha…
View article: Modelling of the B-type binaries CW Cephei and U Ophiuchi
Modelling of the B-type binaries CW Cephei and U Ophiuchi Open
Context . Intermediate-mass stars are often overlooked. They are not supernova progenitors, but still host convective cores and complex atmospheres that require computationally expensive treatment. This means that there is a general lack o…
View article: Modelling of the B-type binaries CW Cep and U Oph: A critical view on dynamical masses, core boundary mixing, and core mass
Modelling of the B-type binaries CW Cep and U Oph: A critical view on dynamical masses, core boundary mixing, and core mass Open
Context: Intermediate-Mass stars are often overlooked as they are not supernova progenitors but still host convective cores and complex atmospheres which require computationally expensive treatment. Due to this, there is a general lack of …
View article: Evidence for conservative mass transfer in the classical Algol system δ Librae from its surface carbon-to-nitrogen abundance ratio
Evidence for conservative mass transfer in the classical Algol system δ Librae from its surface carbon-to-nitrogen abundance ratio Open
Algol-type binary systems are the product of rapid mass transfer between the\ninitially more massive component to its companion. It is still unknown whether\nthe process is conservative, or whether substantial mass is lost from the\nsystem…
View article: Physical properties and CNO abundances for high-mass stars in four main-sequence detached eclipsing binaries: V478 Cyg, AH Cep, V453 Cyg and V578 Mon
Physical properties and CNO abundances for high-mass stars in four main-sequence detached eclipsing binaries: V478 Cyg, AH Cep, V453 Cyg and V578 Mon Open
A prerequisite for probing theortical evolutionary models for high-mass stars\nis the determination of stellar physical properties with a high accuracy. We do\nthis for three binary systems containing components with masses above 10 Msun:\…
View article: Oscillating red giants in eclipsing binary systems: empirical reference value for asteroseismic scaling relation
Oscillating red giants in eclipsing binary systems: empirical reference value for asteroseismic scaling relation Open
© 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. The internal structures and properties of oscillating red-giant stars can be accurately inferred through their global oscillation modes …
View article: Beta Lyrae as seen by BRITE in 2016
Beta Lyrae as seen by BRITE in 2016 Open
The BTr and UBr satellites observed $β$ Lyrae from May to October 2016 to continuously monitor light-curve instabilities with the time resolution of about 100 mins. An instrumental problem affecting localized patches on the BTr CCD detecto…