Results 141 to 150 of about 198,420 (284)
Lithium and chromospherically active single giants [PDF]
Nine chromospherically active single K giants were identified from surveys of chromospherically active stars. The stars have v sin i's ranging from 6 to 46 km/sec.
Fekel, Francis C.
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Advanced Engineering Materials, EarlyView.Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth +6 more
wiley +1 more source
On the physical association of the peculiar emission: Line stars HD 122669 and HD 122691 [PDF]
Spectroscopic and photometric observations indicate a physical association between the peculiar early-type emission-line stars HD 122669 and HD 122691. The latter has undergone a drastic change in the strength of its emission lines during the past twenty
Garrison, R. F. +2 more
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Hα Emission-Line Stars in M33 [PDF]
Symposium - International Astronomical Union, 1991 C. Neese, T. E. Armandroff, P. Massey
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Profiles of Emission Lines in be Stars
The Astrophysical Journal, 1972 Study of the broadening functions resulting from a gaseous ring in circular motion around a star according to Kepler's law. When the distribution in the gaseous ring has a circular symmetry in the equatorial plane, the broadening profile is related to the surface density distribution along the radius by an integral equation which can be transformed ...
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Advanced Engineering Materials, EarlyView.Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm +5 more
wiley +1 more source
Active Young Stars in the LAMOST–Kepler Survey
The Astrophysical Journal Supplement SeriesIn the early stages of their lives, young stars harbor diverse processes exhibiting strong signatures, making them ideal targets for investigating stellar accretion, dynamo actions, and exoplanet formation.
FuKun Xu, Shenghong Gu, Yue Xiang
doaj +1 more source
Advanced Engineering Materials, EarlyView.Fungal mycelia grown into biodegradable scaffolds and infused with titania nanoparticles show enhanced ultraviolet shielding, thermal protection, and surface nonwettability. Properties were tuned by drying methods, revealing structure–function relationships.
Juwon S. Afolayan +2 more
wiley +1 more source
Haro 5-2: A New Pre-main-sequence Quadruple Stellar System
The Astronomical JournalWe have discovered that the H α emission-line star Haro 5-2, located in the 3–6 Myr old Ori OB1b association, is a young quadruple system. The system has a 2+2 configuration, with an outer separation of 2.″6 and with resolved subarcsecond inner binary ...
Bo Reipurth +11 more
doaj +1 more source
The Astrophysics of Emission-Line Stars [PDF]
, 2007 Tomokazu Kogure, Kam-Ching Leung
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