Results 101 to 110 of about 209,011 (176)

A deeply eclipsing detached double helium white dwarf binary [PDF]

open access: yes, 2011
Using Liverpool Telescope+RISE photometry we identify the 2.78 hour period binary star CSS 41177 as a detached eclipsing double white dwarf binary with a 21,100K primary star and a 10,500K secondary star. This makes CSS 41177 only the second known eclipsing double white dwarf binary after NLTT 11748.
arxiv   +1 more source

TIC 290061484: A Triply Eclipsing Triple System with the Shortest Known Outer Period of 24.5 Days

open access: yesThe Astrophysical Journal
We have discovered a triply eclipsing triple-star system, TIC 290061484, with the shortest known outer period, P _out , of only 24.5 days. This “eclipses” the previous record set by λ Tauri at 33.02 days, which held for 68 yr.
V. B. Kostov   +15 more
doaj   +1 more source

EVOLUTIONARY EFFECTS IN CLOSE BINARIES: ANALYSIS OF THE DISTRIBUTION OF ORBITAL ECCENTRICITIES

open access: yesOdessa Astronomical Publications, 2017
Dependencies of orbital eccentricity e on orbital periods P in close binary systems (CBS) of different masses and ages, being at the Main Sequence (DMS) and being eclipsing binary stars (EBS), are reviewed.
A. M. Cherepashchuk, V. G. Karetnikov
doaj   +1 more source

A New Binary Star System of EW Type in Draco: GSC 03905-01870

open access: yes, 2018
Discovery of a new binary star system (GSC 03905-01870 = USNO-B1.0 1431-0327922 = UCAC4 716-059522) in the Draco constellation is presented. It was discovered during a search for previously unreported eclipsing binary stars through the ASAS-SN database ...
Barquin, Salvador
core   +3 more sources

Precision Timing of Eclipsing Binaries from TESS Full Frame Images: Method and Performance

open access: yesThe Astrophysical Journal
Several hundreds of thousands of eclipsing binaries (EBs) are expected to be detected in the Transiting Exoplanet Survey Satellite (TESS) full frame images (FFIs).
Frédéric Marcadon, Andrej Prša
doaj   +1 more source

Radial velocity and light curves analysis of the eclipsing binary NN Vir

open access: yesOdessa Astronomical Publications, 2017
The eclipsing binary NN Vir is a short period system showing an EW-type light curve. Photometric Observations of NN Vir were done by Gomez-Ferrellad & Garcia-Melendo (1997) at Esteve Duran Observatory.
R. Pazhouhesh, E. G. Melendo
doaj   +1 more source

COMPARATIVE ANALYSIS OF NUMERICAL METHODS OF DETERMINATION OF PARAMETERS OF BINARY STARS. CASE OF SPHERICAL COMPONENTS

open access: yesOdessa Astronomical Publications, 2013
We discuss methods for modeling eclipsing binary stars. There are few realizations of the Wilson- Devinney (1971) code and its improvements, e.g. “Binary Makef’, “Phoebe”. A parameter search using the Monte- Carlo method was realized by Zola et al. (2010)
I. A. Andronov, M. G. Tkachenko
doaj   +1 more source

Evidence for a Close-in Tertiary Orbiting around the Algol-type System HZ Dra with Tidal Splitting and Spots Activities

open access: yesThe Astrophysical Journal
We report a cyclic variation of the O − C diagram with a semiamplitude of 0.0033 days and a period of 1.05 yr for the pulsating eclipsing binary HZ Dra. The cyclic variation can be explained by the light travel-time effect via the presence of a close-in ...
Ping Li   +9 more
doaj   +1 more source

The massive binary population of the starburst cluster Westerlund 1 [PDF]

open access: yes, 2010
We present initial results from a long-baseline radial velocity survey for massive binaries in the cluster Westerlund 1. Four systems are examined: the dust-producing WC binary W239, the double-lined eclipsing binary W13, and the single-lined B0 ...
Clark, J. S.   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy