Results 11 to 20 of about 198 (177)
UV emission line shifts of symbiotic binaries [PDF]
Astronomy and Astrophysics, 2010 Relative and absolute emission line shifts have been previously found for symbiotic binaries, but their cause was not clear. This work aims to better understand the emission line shifts. Positions of strong emission lines were measured on archival UV spectra of Z And, AG Dra, RW Hya, SY Mus and AX Per and relative shifts between the lines of different ...
Friedjung, M. +3 more
openaire +3 more sources
H II regions in symbiotic binaries and their radio emission [PDF]
Astronomy & Astrophysics, 2003 The slow and dense wind from a symbiotic red giant can be significantly deflected toward the orbital plane by the gravitational pull of the companion star. In such an environment, the ionizing radiation from the companion creates a highly asymmetric HII region. We present three-dimensional models of HII regions in symbiotic S-type systems, for which we
Gawryszczak, A. J. +2 more
openaire +2 more sources
On the nova-like eruptions of symbiotic binaries [PDF]
Monthly Notices of the Royal Astronomical Society, 1992 Three popular explanations for the nova-like eruptions observed in symbiotic binary stars are discussed and model predictions compared with recent observations. Most outbursts occur when unstable hydrogen shell burning causes a hot white dwarf to expand to a radius of 1-100 R ⊙ .
Joanna Mikołajewska, Scott J. Kenyon
openaire +1 more source
The Symbiotic Binary System AG Pegasi [PDF]
Symposium - International Astronomical Union, 1980 A complete coverage of the spectrum of AG Peg has been obtained between wavelengths 1200 − 7000 A by us, and can be supplemented by IR photometric observations by others. Our IUE observations yield a lower value of E(B-V), about 0.12. The two stellar components are easily recognized, but their characteristics are still rather uncertain.The cool ...
Charles D. Keyes, Mirek J. Plavec
openaire +1 more source
NUMERICAL SIMULATIONS OF WIND ACCRETION IN SYMBIOTIC BINARIES
The Astrophysical Journal, 2009 We study the dynamical effects of gravitational focusing by a binary companion on winds from late-type stars. In particular, we investigate the mass transfer and formation of accretion disks around the secondary in detached systems consisting of an AGB mass-losing star and an accreting companion.
de Val-Borro, M. +2 more
openaire +2 more sources
Revisiting symbiotic binaries with interferometry
Astronomy & AstrophysicsSymbiotic stars, which generally comprise a red giant and an accreting white dwarf, are excellent laboratories to understand mass transfer in long-period binaries. One of the fundamental questions is how mass is transferred from the red giant to the white dwarf.
Henri M. J. Boffin, Jaroslav Merc
openaire +4 more sources
Discovery of a Possible Symbiotic Binary in the Large Magellanic Cloud [PDF]
Research Notes of the AAS, 2017 We report the discovery of a possible symbiotic star, in the Large Magellanic Cloud (LMC). The object under consideration here, designated as RP 870, was detected during the course of a comprehensive H$α$ survey of the LMC by Reid & Parker (2012). The spectrum of RP 870 showed high ionization emission lines of He I, He II and [O III] and molecular ...
Blesson Mathew +3 more
openaire +2 more sources
Symbiotic Binary YY Her — Eclipses, Flares and Outbursts
Astrophysics and Space Science, 2006 The long-term CCD and photoelectric observations of YY Her covering the period of its post-outburst activity (JD 2 451 823 -2 452 996) are presented. We explain the periodic variations of the brightness of YY Her by the eclipses of the components in the system.
Hric, L. +3 more
openaire +2 more sources
Thermodynamics and Kinetics in Host Design for Dendrite‐Free Zinc Metal Anodes
Advanced Science, EarlyView.This review comprehensively summarizes recent advances in host design strategies for high‐performance zinc metal anodes, and deeply elucidates their thermodynamic and kinetic design principles from the perspective of surface modification, interface engineering, and spatial confinement.
Peng Xiao Sun +9 more
wiley +1 more source
Advanced Science, EarlyView.The transcription factor MoSR governs DMI fungicide sensitivity in Magnaporthe oryzae through dual regulation of ergosterol biosynthesis and the detoxification enzyme MoDde1. Targeting MoDde1 via a small‐molecule inhibitor or host‐induced gene silencing enhances DMI efficacy against rice blast, offering a sustainable disease management strategy ...
Fan‐Zhu Meng +10 more
wiley +1 more source