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Thread: binary star systems

  1. #1 binary star systems 
    Moderator Moderator AlexP's Avatar
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    I'm pretty sure i know the answer to this already, but will a binary star system from earth appear any different than any normal star? thanks...


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  3. #2 Re: binary star systems 
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    Quote Originally Posted by Chemboy
    I'm pretty sure i know the answer to this already, but will a binary star system from earth appear any different than any normal star? thanks...
    It depnds. Do you mean will it appear different with the naked eye? I only know of one binary star system where both stars are visible with the naked eye. These are Mizar and Alcor in Ursa Major.


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  4. #3 Re: binary star systems 
    Forum Senior Imaplanck.'s Avatar
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    Quote Originally Posted by Chemboy
    I'm pretty sure i know the answer to this already, but will a binary star system from earth appear any different than any normal star? thanks...
    Are you talking of the theory of our solar system being a binary system, but the second sun isn't visible?
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  5. #4 Re: binary star systems 
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    Quote Originally Posted by Chemboy
    I'm pretty sure i know the answer to this already, but will a binary star system from earth appear any different than any normal star? thanks...
    I can think of the following differences:
    1. In some instances visual separation at high enough magnification.
    2. Two dissimilar spectra.
    3. Positional 'Wobble' of the larger, more visible partner.
    4. Doppler effects on spectra, due to mutual rotation.

    There are other differences, as some of these are, or will, be employed to search for exo-planets.
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  6. #5  
    Moderator Moderator AlexP's Avatar
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    Hermes, yes, I'm just asking if its possible to detect a binary star system with the naked eye.
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