Haghighipour N. & Kaltenegger, L, Calculating the Habitable
Zone of Binary Star Systems II: P - type Binaries, ApJ, 777, 2, 166, 13 pp., 2013
For example, if a black hole is a
member of a binary star system, matter flowing into it from its companion becomes intensely heated and then radiates X-rays copiously before entering the event horizon of the black hole and disappearing forever.
Cygnus X-1 was found as part
of a binary star system in which an extremely hot and bright star called a blue supergiant formed an accretion disk around an invisible object.
In an earlier study, also published in MNRAS, researchers concluded that small bodies such as asteroids are more likely to be flung
out of binary star systems than systems with single stars (like the solar system).
Residing in the plane of the Milky Way, where it can not be observed by optical telescopes because of obscuring clouds of interstellar dust, Circinus X-1 is the glowing
husk of a binary star system that exploded in a supernova event just 2,500 years ago.
Kaltenegger, L. & Haghighipour N., Calculating the Habitable
Zone of Binary Star Systems I: S - type Binaries, ApJ, 777, 2, 165, 11 pp., 2013
European astronomers have for the first time demonstrated that this magnetar — an unusual type of neutron star with an extremely strong magnetic field — probably was formed as
part of a binary star system.
Most of the pulsars that spin faster than once per 20 milliseconds are part
of a binary star system, but about 30 % have no companions whatsoever, the scientists note.
For example, if the red giant is part
of a binary star system and is therefore orbiting a companion star, then the gravity of the other star could possibly pull the slow wind into the shape of a disk.
HD 92129Aa is part
of a binary star system, orbiting HD 93129Ab.
The specimen, under observation, is part
of a binary star system, named J1906, which was discovered in 2004 using the Arecibo Observatory in Puerto Rico.