Possible double stars?

[phrgarek]

Greetings!

I was wondering, which stars could be possible binary system..... i searched the web, but didn't find detailed answers...
For some stars i already know that are binary star systems, i know for example that binary star system could exists of two yellow dwarfs, one red giant and one red dwarf and so.... but what i couldn't find is:

could exist binary system of two small red dwarf star? or tripple red dwarf system?
and could exist binary system of one yellow dwarf as our sun and one red dwarf star? (if so, would then red dwarf orbit a bigger star, or would this star system behave just as alpha centauri for example, i mean orbiting each other?)

thank you very much

 

[MeteorWayne]

Greetings!

I was wondering, which stars could be possible binary system..... i searched the web, but didn't find detailed answers...
For some stars i already know that are binary star systems, i know for example that binary star system could exists of two yellow dwarfs, one red giant and one red dwarf and so.... but what i couldn't find is:

could exist binary system of two small red dwarf star? or tripple red dwarf system?
and could exist binary system of one yellow dwarf as our sun and one red dwarf star? (if so, would then red dwarf orbit a bigger star, or would this star system behave just as alpha centauri for example, i mean orbiting each other?)

thank you very much

Any type of stars can create multiple star systems.

In any such system, the stars orbit the barycenter (the center of mass) of the whole system, so one does not obit the other, just as in the solar system the sun actually orbits the center of mass of the whole solar system.

alpha Centauri, is actually a triple system, with two stars close (a-Centauri AB) and a distant 3rd member that is closer to us, Proxima Centauri.

http://en.wikipedia.org/wiki/Binary_star

http://en.wikipedia.org/wiki/Multiple_star

 

[SpaceTas]

Also search under visual binary stars


You'll near a good star chart or planetarium software (to make maps) to track these down
Here is a northern hemisphere list of doubles suitable for amateur telescopes.
http://www.astromax.org/aa02602.htm
http://www.richardbell.net/DoubleStars/double_stars.html
http://www.astronomy.com/asy/default.aspx?c=a&id=4742 A little about color's of stars.
Colorful doubles:
http://www.umich.edu/~lowbrows/reflections/1998/mdeprest.8.html

and some images
http://schmidling.com/doubst.htm

More professional lists
http://www.usc.es/astro/catalog.htm
http://www.astronomy.csdb.cn/astrodata/ds2006/WDS2006.5/DESCRIP/wds2006.5text.html

Most night sky guides have notes on double stars. I believe Sky & telescope have a book specifically for the observation and measurement. Norton's star atlas have lists, as does Burnham's Celestial Handbook.