High-redshift galaxy populations

Article Abstract:

Multi-wavelength studies show that there was relatively little star formation at very early times and that star formation was at its maximum at about half the age of the universe. A small number of high-redshift objects are found by targeting X-ray, radio sources and gamma-ray bursts where ray-ray burst sources provides a way to reach higher-redshift galaxies in the future.

Galaxies, Gamma rays, Red shift, Redshift

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White dwarf stars with carbon atmospheres

Article Abstract:

The discovery of a new evolutionary sequence of stars, known as white dwarfs with carbon as main component, and minor amount of hydrogen and helium in the atmosphere is reported.

Observations, Composition, Stars, Dwarf stars, Stellar mass

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