Yes.
No, it is called a binary system.
A binary star is simply a system containing two stars, which does not say anything about the system's mass.
Star system with 2 star called? binary star system
Two stars orbiting each other are "binary stars" ...a group of stars near each other, may be formally or informally known as a "cluster".
A star system can have two or more stars. A star system with two stars is called a binary star system.
A binary star system is two stars that orbit around each other
X-ray binary stars are basically X-ray sources that are members of a binary system.They are a class of binary stars that produce a large quantity of X-rays. The X-rays are produced by matter falling from one of the members, called the donor, which is usually a relatively normal star, to the other component, called the accretor, which is generally a collapsed star like a white dwarf, neutron star, or black hole.Â?The fallen matter releases its gravitational potential energy as X-rays.Note: A binary star system is a system containing two stars that orbit around their common center of mass.
Such a system is a multiple-star system. If it contains exactly two stars then it is called a binary system.
That would be a binary star system. If one star is small compared to the other, they could be oberved as a Pulsar.
Binary stars
By definition, a binary star system has two stars in it.
A binary star is a system of two stars gravitationally bound together that are constantly orbiting each other.
A system with two stars is called a binary star system. A system with three stars is called a ternary system or a trinary system - both names mean the same thing. Beyond three stars there are quaternary or quadruple systems which have four stars, quintuple systems which have 5 stars and so on and so fourth.