Results 21 to 30 of about 6,137,241 (375)
Spectroscopic Orbits of Subsystems in Multiple Stars. VI. [PDF]
Astronomical Journal, 2019 Thirteen spectroscopic orbits of late-type stars are determined from the high-resolution spectra taken with the CHIRON echelle spectrometer at the 1.5 m Cerro Tololo Inter-American Observatory telescope.
A. Tokovinin
semanticscholar +1 more source
ULTRACOMPACT STARS WITH MULTIPLE NECKS [PDF]
Modern Physics Letters A, 2002 We discuss ultracompact stellar objects which have multiple necks in their optical geometry. There are in fact physically reasonable equations of state for which the number of necks can be arbitrarily large. The proofs of these statements rely on a recent regularized formulation of the field equations for static spherically symmetric models due to ...
Max Karlovini +2 more
openaire +3 more sources
V907 Sco Switched to the Eclipsing Mode Again
The Astronomical Journal, 2023 V907 Scorpii is a unique triple system in which the inner binary component has been reported to have switched on and off eclipses several times in modern history.
Petr Zasche +3 more
doaj +1 more source
On multiplicity correlations in the STAR data [PDF]
Open Physics, 2012 Abstract The STAR data on the multiplicity correlations between narrow pseudorapidity bins in the pp and AuAu collisions are discussed. The PYTHIA 8.145 generator is used for the pp data, and a naïve superposition model is presented for the AuAu data.
K. Fialkowski, Romuald Wit
openaire +4 more sources
CCD Measurements of Double and Multiple Stars at NAO Rozhen. IV [PDF]
Serbian Astronomical Journal, 2010 Using the 2 m telescope of the Bulgarian National Astronomical Observatory at Rozhen observations of 30 double or multiple stars were carried out during two half nights on July 20and 21, 2009.
Boeva, S., Cvetkovic, Z., Pavlovic, R.
doaj +3 more sources
Born to Be Wide: The Distribution of Wide Binaries in the Field and Soft Binaries in Clusters
The Astrophysical Journal, 2023 Most stars, binaries, and higher-multiplicity systems are thought to form in stellar clusters and associations that later dissociate. Very wide binaries can be easily disrupted in clusters due to dynamical evaporation (soft binaries) and/or tidal ...
Mor Rozner, Hagai B. Perets
doaj +1 more source
A Catalog of Nearby Accelerating Star Candidates in Gaia DR3
The Astronomical Journal, 2023 We describe a new catalog of accelerating star candidates with Gaia G ≤ 17.5 mag and distances d ≤ 100 pc. Designated as the Gaia Nearby Accelerating Star Catalog (GNASC), it contains 29,684 members identified using a supervised machine-learning ...
Marc L. Whiting +3 more
doaj +1 more source
CCD measurements of double and multiple stars at NAO Rozhen. III [PDF]
Serbian Astronomical Journal, 2007 Using the 2-m telescope of the Bulgarian National Astronomical Observatory at Rozhen, observations of 55 multiple stars were carried out during one night, December 16/17. 2006.
Cvetković Z. +4 more
doaj +1 more source
Atmospheric and Fundamental Parameters of the Individual Components of Multiple Stellar Systems
The Astronomical Journal, 2023 We present detailed analyses of eight triple stellar systems (lying between 20 and 155 pc) and nine quadruple stellar systems (lying between 20 and 250 pc) with different configurations. Most of these systems are hierarchical.
Enas M. Abu-Alrob +2 more
doaj +1 more source
Spectroscopic Orbits of Subsystems in Multiple Stars. IX
The Astronomical Journal, 2023 New spectroscopic orbits of inner subsystems in 14 hierarchies are determined from long-term monitoring with the optical echelle spectrometer, CHIRON.
Andrei Tokovinin
doaj +1 more source