Results 81 to 90 of about 96,398 (314)
The Long-period Spectroscopic Orbit and Dust Creation in the Wolf–Rayet Binary System WR 125
The Astrophysical JournalSeveral long-period binaries with a carbon-rich Wolf–Rayet star and an OB star produce dust in their wind collisions. In eccentric binaries, this is seen most strongly near periastron passage.
Noel D. Richardson +10 more
doaj +1 more source
Low Mass Ratio Contact Binary V410 Aur and V776 Cas - II [PDF]
Journal of Astronomy and Space Sciences, 2005 New BVR CCD light curves of the low mass ratio contact binaries, V410 Aur and V776 Cas, were observed with the 61 cm reflector and a 2K CCD camera at the Sobaeksan Astronomical Observatory.
Kyu-Dong Oh, Chun-Hwey Kim, Ho-iL Kim
doaj +1 more source
Spectroscopic binary frequency among CNO stars
The Astrophysical Journal Supplement Series, 1988 Les observations spectroscopiques de 35 etoiles de type OB ayant des anomalies de carbone, azote et oxygene sont presentees. Les vitesses radiales sont mesurees raie par raie pour chacune des etoiles. L'analyse statistique des resultats confirme que la frequence des binaires spectroscopiques de courte periode est plus grande chez les etoiles de type ...
Stella Malaroda +3 more
openaire +2 more sources
FM stars: A Fourier view of pulsating binary stars, a new technique for measuring radial velocities photometrically [PDF]
, 2012 Some pulsating stars are good clocks. When they are found in binary stars, the frequencies of their luminosity variations are modulated by the Doppler effect caused by orbital motion.
Kurtz, Donald W., Shibahashi, Hiromoto
core +2 more sources
Data-driven Spectroscopic Estimates of Absolute Magnitude, Distance, and Binarity: Method and Catalog of 16,002 O- and B-type Stars from LAMOST [PDF]
, 2020 We present a data-driven method to estimate absolute magnitudes for O- and B-type stars from the LAMOST spectra, which we combine with Gaia DR2 parallaxes to infer distance and binarity.
M. Xiang +6 more
semanticscholar +1 more source
Nano‐Patterned CuO Nanowire Nanogap Hydrogen Gas Sensor with Voids
Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.Sub‐5‐ppb hydrogen (H2) detection and sub‐10‐s response and recovery times are achieved based on nano‐patterned polycrystalline CuO nanowires nanogap gas sensors with voids using electron‐beam lithography and unique annealing processes. Pre‐H2 annealing, void‐generating oxidation, and downscaled nanogap electrodes are key to improving the sensing ...
Muqing Zhao +4 more
wiley +1 more source
Astronomical Cardiology: A Search For Heartbeat Stars Using $\textit{Gaia}$ and $\textit{TESS}$
The Open Journal of AstrophysicsHeartbeat stars are a subclass of binary stars with short periods, high eccentricities, and phase-folded light curves that resemble an electrocardiogram.
Jowen Callahan +3 more
doaj +1 more source
HEARTBEAT STARS: SPECTROSCOPIC ORBITAL SOLUTIONS FOR SIX ECCENTRIC BINARY SYSTEMS [PDF]
, 2015 We present multi-epoch spectroscopy of “heartbeat stars,” eccentric binaries with dynamic tidal distortions and tidally induced pulsations originally discovered with the Kepler satellite.
R. Smullen, H. Kobulnicky
semanticscholar +1 more source
Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.Protonic ceramic fuel cells offer a promising route to generate power efficiently but face critical challenges in achieving industrially viable activity and stability at their cathodes in CO2‐containing air. This report proposes a new cathode material design strategy to enable the cathode to be both catalytically active and CO2 tolerant through the ...
Desheng Feng +14 more
wiley +1 more source
The Astronomical JournalThis work analyzes four Sun-like double-lined spectroscopic binary systems by combining visual and spectroscopic observational data with Al-Wardat’s atmospheric modeling method to accurately determine their fundamental parameters.
Ahmad Abushattal +7 more
doaj +1 more source