Results 151 to 160 of about 154,154 (200)

Ornamental origins and genomic frontiers: a review of big-bracted dogwood research. [PDF]

open access: yesFront Plant Sci
Hamm TP   +10 more
europepmc   +1 more source

The White Dwarfs

Science, 1945
White dwarfs have been known for slightly more than fifty years; with their planet-like diameters, and stellar-like masses their densities are enormously much higher than those of ‘normal’ stars. They thus appear to represent a state of matter totally unknown and possibly unattainable on earth.
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White Dwarfs

1971
NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. The aim of this thesis is to use model-atmosphere techniques and intermediate-band photoelectric scans to determine the properties of white dwarfs.
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Testing white dwarf cosmochronology using wide double white dwarfs

Proceedings of the International Astronomical Union, 2019
AbstractWe present a sample of nearly 650 widely separated double white dwarf binaries found using Gaia DR2 astrometry. We derive preliminary total ages for each white dwarf in our sample using Gaia photometry and compare the total ages of both components of each binary in our sample.
Tyler Heintz, JJ Hermes
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Spectrum of White Dwarfs

Nature, 1948
IN a recent paper, Blackett1 has suggested that the Zeeman effect might be responsible for the peculiar absence of metallic lines in the spectra of most of the white dwarfs and may also contribute to the broadening of the hydrogen lines. Since this suggestion was given as one more argument in support of the theory of the magnetic field of massive ...
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WHITE DWARFS AS LABORATORIES

International Journal of Modern Physics D, 2004
As 98% of all stars evolve into white dwarf starsm their study tell us about the evolution of the majority of stars. White dwarf stars show luminosity variations when their temperature reach instabilitity strips caused by high surface opacity. These variations are due to global pulsations that can be used to study the internal structure and evolution ...
openaire   +2 more sources

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