نتایج جستجو برای: cvn
تعداد نتایج: 550 فیلتر نتایج به سال:
We report the discovery of a new variable star, called S 10947 Aql, as the likely optical counterpart of RX J2009.8+1557. The optical variability pattern as well as the detected X-ray emission suggest that it is a chromospherically active binary of the RS Canum Venaticorum (≡ RS CVn) type. We discovered an occasional disappearance of the eclipsing minima as well as large variations in the eclip...
The microstructure and mechanical properties of X70 pipeline steel with a ferrite/martensite dual-phase produced by thermo-mechanical controlled processing were investigated tensile tests, Charpy V-notched (CVN) impact drop-weight tear guided-bend scanning electron microscopy transmission combined thermodynamic simulation analysis. All the met strength, ductility, toughness deformability requir...
We present high time resolution VLT spectroscopy of SDSS J124058.03−015919.2, a new helium-transferring binary star identified in the Sloan Digital Sky Survey. We measure an orbital period of 37.355± 0.002 minutes, confirming the AM CVn nature of the system. From the velocity amplitudes of the accretor and the accretion stream– disc impact, we derive a mass ratio q = 0.039± 0.010. Our spectral ...
The inflammatory response plays a crucial role in infectious diseases, and the intestinal microbiota is linked to maturation of the immune system. However, the association between microbiota and the response against fungal infections has not been elucidated. Our aim was to evaluate the influence of microbiota on Cryptococcus gattii infection. Germ-free (GF), conventional (CV), conventionalized ...
We present the results from the discovery and study of ∼ 3000 chromospherically active giant and subgiant stars toward the Galactic bulge. We find that these stars are predominantly RS CVn binaries with rotation periods between 10 and 100 days. We discover that the average rotational period of these stars decreases with their distance from the Galactic plane. We find that the primary stars in t...
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