Results 31 to 40 of about 210,765 (341)

ELECTRONIC TEXTBOOK FOR AMATEUR ASTRONOMERS AND STUDENTS "Binary stars and their evolution"

open access: yesOdessa Astronomical Publications, 2017
Electronic textbook for members and supervisors of the Youth Academy of Sciences; schoolars and teachers; students of the first courses. Total volume of the printed version is 86pp. The textbook is devoted to 100-th Anniversary of Prof.
L. L. Chinarova
doaj   +1 more source

The evolution of massive binary systems [PDF]

open access: yesSerbian Astronomical Journal, 2020
The evolution of massive stars in close binary systems is significantly different from single star evolution due to a series of interactions between the two stellar components.
Petrović Jelena
doaj   +1 more source

General Relativistic Decompression of Binary Neutron Stars During Dynamic Inspiral

open access: yes, 2007
We investigate the dynamic stability of inspiraling neutron stars by performing multiple-orbit numerical relativity simulations of the binary neutron star inspiral process.
Miller, Mark
core   +1 more source

Contact Binary Stars [PDF]

open access: yesInternational Astronomical Union Colloquium, 1983
Abstract:Ultraviolet and X-ray surveys of the W Ursae Majoris type stars are reviewed. These systems exhibit extended coronas and transition regions that are confined close to the optically determined surfaces. Correlations of X-ray activity with period or rotational velocity indicate a turn-over or saturation of emission at the short periods or high ...
openaire   +2 more sources

Gravity darkening in binary stars [PDF]

open access: yesAstronomy & Astrophysics, 2012
Context.Interpretation of light curves of many types of binary stars requires the inclusion of the (cor)relation between surface brightness and local effective gravity. Until recently, this correlation has always been modeled by a power law relating the flux or the effective temperature and the effective gravity, namely T_eff g_eff^ . Aims. We look
Michel Rieutord   +3 more
openaire   +3 more sources

Most Sub-Arcsecond Companions of Kepler Exoplanet Candidate Host Stars are Gravitationally Bound [PDF]

open access: yes, 2014
Using the known detection limits for high-resolution imaging observations and the statistical properties of true binary and line-of-sight companions, we estimate the binary fraction of {\it Kepler} exoplanet host stars.
Ciardi, David R.   +3 more
core   +3 more sources

Be Stars as Interacting Binaries [PDF]

open access: yesSymposium - International Astronomical Union, 1982
At the last IAU Symposium on Be stars held in Bass River, MA in 1975, several of us (including P. Harmanec, M. Plavec, R.S. Polidan, and myself) suggested that Be stars are mass transfer binaries and represent the higher mass counterparts to the familiar Algol systems.
openaire   +2 more sources

Binary Stars in Upper Scorpius [PDF]

open access: yesThe Astronomical Journal, 2019
Abstract To address the statistics of binary stars in the 8 Myr old Upper Scorpius (USco) star formation region, we conducted a speckle interferometric survey of 614 association members more massive than 0.4  (spectral types earlier than M3V) based on the list of Luhman et
Andrei Tokovinin, Cesar Briceño
openaire   +4 more sources

The multidrug and toxin extrusion (MATE) transporter DTX51 antagonizes non‐cell‐autonomous HLS1–AMP1 signaling in a region‐specific manner

open access: yesFEBS Letters, EarlyView.
The Arabidopsis mutants hls1 hlh1 and amp1 lamp1 exhibit pleiotropic developmental phenotypes. Although the functions of the causative genes remain unclear, they act in the same genetic pathway and are thought to generate non‐cell‐autonomous signals.
Takashi Nobusawa, Makoto Kusaba
wiley   +1 more source

Binary Star Orbits. VI. The Interferometric-spectroscopic Binary 73 Leo

open access: yesThe Astronomical Journal
Discordances in radial-velocity measurements of 73 Leonis, made more than a century ago, gave rise to the first suggestion that this fifth-magnitude star was a binary system, but it was 40 yr before an accurate investigation of the object commenced, and ...
Brian D. Mason   +9 more
doaj   +1 more source

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