Results 21 to 30 of about 16,757 (258)
Testing convection in stellar models using detached eclipsing binaries [PDF]
, 2006 The fundamental properties of detached eclipsing binary stars can be measured very accurately, which could make them important objects for constraining the treatment of convection in theoretical stellar models.
Andersen +10 more
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Investigating Stellar Variability in the Open Cluster Region NGC 381
The Astronomical Journal, 2023 We study variable stars in the field of the open cluster NGC 381 using photometric data observed over 27 nights and identify a total of 57 variable stars, six of which are member stars. The variable stars are classified based on their periods, amplitudes,
Jayanand Maurya +3 more
doaj +1 more source
Eclipsing Binaries in Dynamically Interacting Close, Multiple Systems
Galaxies, 2022 Close, compact, hierarchical, and multiple stellar systems, i.e., multiples having an outer orbital period from months to a few years, comprise a small but continuously growing group of the triple and multiple star zoo.
Tamás Borkovits
doaj +1 more source
A New Catalog of Am-type Chemically Peculiar Stars Based on LAMOST
The Astrophysical Journal Supplement Series, 2023 A total of about 21,600 Am candidates were detected with the MKCLASS code based on the low-resolution spectra of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope Data Releases 8 (v1.0), 9 (v0), and 10 (v0), which greatly expands the database
Xiao-man Tian +3 more
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Open Astronomy, 2016 We present the results of Monte Carlo simulation aiming to estimate the frequency of semi-detached Algol-type binaries among the stars observed as single.
Malkov O. +6 more
doaj +1 more source
Eccentric Eclipsing Binary YY Sagittarii
Astrophysics and Space Science, 2006 Seven new precise times of minimum light have been gathered for the triple eccentric eclipsing binary YY Sgr (P = 2d.63, e = 0.16). Its O-C diagram is presented and improved elements of the apsidal motion and the light-time effect are given. We found a new short period of the third body of about 18.5 years in an eccentric orbit (e 3 ≃ 0.4).
Wolf, M. +6 more
openaire +2 more sources
Observations and light curve solutions of four ultrashort-period binaries [PDF]
Serbian Astronomical Journal, 2016 The paper presents light curve solutions of our observations of four new ultrashort-period eclipsing binaries with MS components. Two of them have periods almost at the upper limit (0.22 days) of the ultrashort-period binaries, while the periods
Kjurkchieva D. +3 more
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Techniques for Observing Binaries in Other Galaxies [PDF]
, 2011 I present an overview of the techniques used for detecting and following up binaries in nearby galaxies and present the current census of extragalactic binaries, with a focus on eclipsing systems.
Alard +12 more
core +1 more source
Extragalactic eclipsing binaries: astrophysical laboratories [PDF]
New Astronomy Reviews, 2004 Eclipsing binaries (EBs) have long been known for providing accurate stellar fundamental properties, such as masses and radii. These are obtained from the modeling of light and radial velocity curves and, with input data of good quality, uncertainties of a few percent in the components’ physical properties are now routinely achieved.
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Eclipsing Binaries in Multiple Star Systems [PDF]
Symposium - International Astronomical Union, 1992 Although the majority of the known eclipsing binaries are in systems which consist of only the two eclipsing components, a significant number of them do occur as components of triple star systems or higher order multiple star systems. In this context this term is restricted to those systems whose components are in closed orbits.
openaire +1 more source