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Thread: Getting useful data from a redshift

  1. #1 Getting useful data from a redshift 
    Forum Bachelors Degree PetTastic's Avatar
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    Jul 2010
    London UK
    For example I have a redshift value for a very distant star that is suspected of being some form of dwarf.

    The redshift value I have is made from several components.
    • Gravitational redshift
    • Cosmological redshift
    • Radial redshift
    • Transverse redshift

    What tricks or techneques can be used to split my one number into the above?
    And if possible calculate the transverse direction of travel?

    I believe in nothing, but trust gravity to hold me down and the electromagnetic force to stop me falling through
    Physics is the search for the best model not the truth, as only mythical beings know that.
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  3. #2  
    Forum Senior
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    Sep 2012
    Western Australia
    if it is a dwarf star then it is unlikely you'll observe cosmological redshift.

    Sometimes it is better not knowing than having an answer that may be wrong.
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