How can a binary star system be detected?

Answer 1

According to the book Earth Science: Geology, the Environment, and the Universe, astronomers can identify binary stars by measuring the position of the visible star in the pair and noting shifts as it orbits the center of mass between it and the unseen companion star.

Answer 2

Sometimes you can simply see them with a telescope, as a pair. You need to

check they are a real pair and not just a "line of sight" effect.

A lot are detected using spectrometry. This method makes use of the famous Doppler Effect. Wavelengths in the spectra change as the stars move around each other, and relative to us.

One particular type (eclipsing binaries) can be detected as the light we receive

varies when one star passes in front of the other.

Answer 3

Stellar masses can be determined by observing binary star-systems because the calculations of the orbits of the binary stars allow the masses of their component stars to be directly determined, which in turn allows other stellar parameters, such as radius and density, to be indirectly estimated.

Answer 4

You can normally identify eclipsing binary stars because they appear dimmer than other (Ordinary) stars. Also if you pay close attention, a binary star is usually called a "Double star" witch means it is a double star. Or looking at it this way, two stars combined to make one.

Answer 5

Think about it - when one star eclipses another in a binary system, the one star is the only one visible. This means the spectral lines unique to one star are briefly the only ones you see. As soon as the other star emerges, its unique spectral lines join the other, until another eclipse happens.

Answer 6

The visible star and the invisible star will attract each other. As a result, both will revolve around their center of mass; this movement, observed in the visible star, indicates there is an invisible star.

Answer 7

A binary star system can be detected through various methods, such as direct imaging using telescopes, spectroscopic analysis of their light spectra showing periodic shifts, or through the study of their gravitational interactions affecting each other's orbits. These methods help astronomers confirm the presence of two stars orbiting around a common center of mass.

Answer 8

Binary star systems can be seen with the use of a telescope. Some can be detected from regular variations in luminosity which corresponds to the eclipsing of one star by the other.

Answer 9

You need a stronger telescope than ordinary telescopes to see if one is a binary star.

Like, you can't get these kind in shops…

you have to make them, probably:-)