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A large wide-field telescope and camera with optical throughput over 200 m^2 deg^2 -- a factor of 50 beyond what we currently have -- would enable the detection of faint moving or bursting optical objects: from Earth threatening asteroids…

Astrophysics · Physics 2009-11-07 J. Anthony Tyson , the LSST Collaboration

Massive binaries play significant roles in many fields. Identification of massive stars, particularly massive binaries, is of great importance. In this paper, by adopting the technique of measuring the equivalent widths of several spectral…

Solar and Stellar Astrophysics · Physics 2022-02-16 Yanjun Guo , Jiao Li , Jianping Xiong , Jiangdan Li , Luqian Wang , Heran Xiong , Feng Luo , Yonghui Hou , Chao Liu , Zhanwen Han , Xuefei Chen

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 persistently…

Solar and Stellar Astrophysics · Physics 2023-12-22 A. Tkachenko , K. Pavlovski , N. Serebriakova , D. M. Bowman , L. IJspeert , S. Gebruers , J. Southworth

Accreting massive black hole binaries (MBHBs) often display periodic variations in their emitted radiation, providing a distinctive signature for their identification. In this work, we explore the MBHBs identification via optical…

Detached eclipsing binaries are a fundamental tool for measuring the physical parameters of stars that are effectively evolving in isolation. Starting from more than 40,000 eclipsing binary candidates identified by the All-Sky Automated…

Solar and Stellar Astrophysics · Physics 2022-09-21 D. M. Rowan , T. Jayasinghe , K. Z. Stanek , C. S. Kochanek , Todd A. Thompson , B. J. Shappee , T. W. -S. Holoien , J. L. Prieto , W. Giles

Abstract abridged. Eclipsing binary systems provide the opportunity to measure the fundamental parameters of their component stars in a stellar-model-independent way. This makes them ideal candidates for testing and calibrating theories of…

Instrumentation and Methods for Astrophysics · Physics 2024-02-12 Luc W. IJspeert , Andrew Tkachenko , Cole Johnston , Andrej Prša , Mark A. Wells , Conny Aerts

The expected distributions of eclipse-depth versus period for eclipsing binaries of different luminosities are derived from large-scale population synthesis experiments. Using the rapid Hurley et al. BSE binary evolution code, we have…

Astrophysics · Physics 2009-11-11 S. Soderhjelm , J. Dischler

We have analysed publicly available MACHO observations of 6833 variable stars in the Large Magellanic Cloud, classified as eclipsing binaries. After finding that a significant fraction of the sample was misclassified, we redetermined…

Astrophysics · Physics 2009-11-11 A. Derekas , L. L. Kiss , T. R. Bedding

We report on a data-driven spectral model that we have developed for the identification of double-lined spectroscopic binary stars (SB2s) in the LAMOST low-resolution survey (R$\sim$1800). Employing simultaneous fitting with both…

Solar and Stellar Astrophysics · Physics 2024-10-11 Junhui Liu , Bo Zhang , Jianfeng Wu , Yuan-Sen Ting

The Large Synoptic Survey Telescope (LSST) is conceived as an 8.4-m telescope with CCD or CMOS focal plane covering most of a field 0.6 m in diameter, the latter exceeding the size of the largest photographic plates ever used in astronomy.…

Astrophysics · Physics 2015-06-10 Alistair R. Walker

I present a brief summary of three different types of binary star - astrometric, spectroscopic and eclipsing - and tabulate the properties of these systems that can be determined directly from observations. Eclipsing binary stars are the…

Solar and Stellar Astrophysics · Physics 2020-01-08 John Southworth

Using a comprehensive binary population synthesis scheme, we investigate the statistical properties of a sample of eclipsing binaries that is detectable by an idealised extrasolar planet transit survey with specifications broadly similar to…

Astrophysics · Physics 2009-11-11 B. Willems , U. Kolb , S. Justham

Direct imaging is a powerful exoplanet discovery technique that is complementary to other techniques and offers great promise in the era of 30 meter class telescopes. Space-based transit surveys have revolutionized our understanding of the…

Periodic signatures in time-domain observations of quasars have been used to search for binary supermassive black holes. These searches, across existing time-domain surveys, have produced several hundred candidates. The general stochastic…

We investigate the rate of false planetary transit detection due to blending with eclipsing binaries. Our approach is purely empirical and is based on the analysis of the artificially blended light curves of the eclipsing binary stars in…

Astrophysics · Physics 2007-05-23 Géza Kovács , Gáspár Bakos

We present 31 bright eclipsing contact and semi-detached binaries that showed high period change rates in a 5 year interval in observations by the All-Sky Automated Survey (ASAS). The time-scales of these changes range from only 50 up to…

Astrophysics · Physics 2008-11-26 B. Pilecki , D. Fabrycky , R. Poleski

The Super Wide Angle Search for Planets (SuperWASP) is a whole-sky high-cadence optical survey which has searched for exoplanetary transit signatures since 2004. Its archive contains long-term light curves for ~30 million 8-15 V magnitude…

Solar and Stellar Astrophysics · Physics 2015-04-28 M. E. Lohr

The period, mass ratio, eccentricity, and other orbital parameters are fundamental for investigating binary star evolution. However, the number of binaries with known orbital parameters remains limited. Utilizing the LAMOST-MRS survey, we…

Solar and Stellar Astrophysics · Physics 2025-04-17 Sufen Guo , Mikhail Kovalev , Jiao Li , Guoliang Lu , Shi Jia , Zhenwei Li , Jiangdan Li , Jianping Xiong , Mingkuan Yang , Tongyu He , Xuefei Chen , Zhanwen Han

Aims: Our goal was to increase number of known doubly eclipsing systems such that the resulting dataset would allow to study them via statistical means, as well as prove that they constitute gravitationally bound 2+2 quadruple system.…

Solar and Stellar Astrophysics · Physics 2019-10-17 P. Zasche , D. Vokrouhlicky , M. Wolf , H. Kucakova , J. Kara , R. Uhlar , M. Masek , Z. Henzl , P. Cagas