Results 271 to 280 of about 47,444 (303)

Alteration of Phase Transformation Behavior and Prior Austenite Grain Structure Due to Elevated Tramp Element Concentrations in a Hypoeutectoid Steel

steel research international, EarlyView.
The phase transformation behavior of a hypoeutectoid steel is studied in comparison with alloys containing higher concentrations of tramp elements, simulating high recycling rates. The examination of microstructures reveals that the tramp elements facilitate the formation of displacive phases along with retained austenite.
Lukas Hatzenbichler, Marek Gocnik, Phillip Haslberger, Matthew Galler, Andreas Stark, Oleksandr Glushko, Jozef Keckes, Ronald Schnitzer   +7 more
wiley   +1 more source

JWST detection of a supernova associated with GRB 221009A without an r-process signature. [PDF]

Nat Astron
Blanchard PK, Villar VA, Chornock R, Laskar T, Li Y, Leja J, Pierel J, Berger E, Margutti R, Alexander KD, Barnes J, Cendes Y, Eftekhari T, Kasen D, LeBaron N, Metzger BD, Muzerolle Page J, Rest A, Sears H, Siegel DM, Yadavalli SK.   +20 more
europepmc   +1 more source

Development of Modular Geminivirus-Based Vectors for High Cargo Expression and Gene Targeting in Plants. [PDF]

Plant Biotechnol J
Neubauer M, Vollen K, Zhao C, Ascencio-Ibáñez JT, Hanley-Bowdoin L, Stepanova AN, Alonso JM.   +6 more
europepmc   +1 more source

Igneous processes in the small bodies of the Solar System II: Small satellites and dwarf planets. [PDF]

iScience
Leone G, Tanaka H.
europepmc   +1 more source

An Abrupt Change in the Disk Fraction of Free-Floating Planets at the Deuterium-Burning Ignition Limit

Rodrigues T, Bouy H, Raymond S, Martín E, Bertin E, Romero JO, Barrado D, Huélamo N, Tamura M, Roig NM, Galli P, Cuillandre J.   +11 more
europepmc   +1 more source

Whole genome sequencing reveals how plasticity and genetic differentiation underlie sympatric morphs of Arctic charr

Kurta K, Fedi MO, Baker K, Barker T, Catchpole L, Ciofi C, Cocco A, Diedericks G, Diroma MA, Hindar K, Iannucci A, Irish N, Knitlhoffer V, Laikre L, Leitão HG, Lucchini S, McTaggart S, Pálsson A, Pettersson ME, Ryman N, Snorrason SS, Svardal H, Swarbreck D, Waterhouse RM, Watkins C, Xiao HH, Gharbi K, Jónsson ZO, Andersson L.   +28 more
europepmc   +1 more source

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Infrared Observations of Late-Type Dwarf Stars

Publications of the Astronomical Society of the Pacific, 1974
Observations of twelve dM, dMe, and dKe stars from 2.3 to 11.4 are presented. The stars appear to radiate like cool blackbedies in the infrared. Color temperatures obtained from the infrared data yield photometric radii for seven stars. A correlation is found between spectral type as determined from low-dispersion spectrograms and a V - [2.3] color ...
Bernard W. Bopp, R. D. Gehrz, J. A. Hackwell   +2 more
openaire   +1 more source

Limits to Mass Outflows from Late-Type Dwarf Stars

The Astrophysical Journal, 1996
We show that the mass-loss rates of active late-type dwarf stars must be significantly lower than recent estimates of up to ~5 × 10-10 M☉ yr-1, 4 orders of magnitude higher than that of the Sun. First, we present aperture-synthesis observations at 3.5 mm of the dMe flare stars YZ CMi and AD Leo, during which neither star was detected at an upper limit ...
White, SM, Lim, J
openaire   +2 more sources

Variability of chromospheric lines in late-type dwarf stars

Publications of the Astronomical Society of the Pacific, 1988
The results of a high-resolution spectroscopic synoptic program of observations of key chromospheric diagnostics in a sample of dwarf stars are reported. Low-level variability in the strength of the chromospheric H-alpha absorption line is found. The nature of the variability implies that the operative chromospheric heating mechanism is partially ...
Giuseppe Cutispoto, Mark S. Giampapa
openaire   +1 more source

Spectroscopic Tests of Late-Type Model Atmospheres of Dwarf Stars

1991
The basic properties of horizontally stratified, homogeneous atmospheric models of cool dwarfs are compared with spectroscopic observations. Recent results of kinetic equilibrium calculations for stars of different metal abundances are discussed.
T. Gehren, C. Reile, W. Steenbock
openaire   +1 more source