Stellar wind of old stars reveals existence of a partner

Red giants are old stars that eject gaseous material and solid particles through a stellar wind. Some red giants appeared to lose an exceptionally large amount of mass this way. However, new observations reveal that this ...

Stellar winds, the source material for the universe, are clumpy

Data recorded by NASA's Chandra X-ray Observatory of a neutron star as it passed through a dense patch of stellar wind emanating from its massive companion star provide valuable insight about the structure and composition ...

How do stellar binaries form?

Most stars with the mass of the sun or larger have one or more companion stars, but when and how these multiple stars form is one of the controversial central problems of astronomy. Gravity contracts the natal gas and dust ...

Astronomers propose a new method for detecting black holes

A stellar mass black hole is a compact object with a mass greater than three solar masses. It is so dense and has such a powerful force of attraction that not even light can escape from it. They cannot be observed directly, ...

Spanish astronomer discovers new binary star of EW type

Spanish astronomer Salvador Barquin has detected a new binary star system in the Draco constellation. The newly found system, registered by the discoverer in the International Variable Star Index (VSX), is an EW-type eclipsing ...

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