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    Are there any objects in space that are "blue-shifted?"

    Question #122795. Asked by houston1127. (Aug 02 11 3:39 PM)


    Barbiegurl676

    		It appears that "blue-shift" occurs when an object is moving towards and individual, and thus is seen with the Doppler Effect, as well.

    "Doppler blueshift is caused by movement of a source towards the observer. The term applies to any decrease in wavelength (increase in frequency) caused by relative motion, even outside the visible spectrum."

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

    Aug 02 11, 3:47 PM
    triviapaul

    		Yes.

    The Andromeda Galaxy is famously going to collide with our Milky Way, which presumably means that it is blue-shifted.

    http://en.wikipedia.org/wiki/Andromeda%E2%80%93Milky_Way_collision

    This site has a list of objects. From what I could glean from all the numbers is that the (very few) objects with negative numbers in the V_h column are coming towards us, but it doesn't specifically say "blue-shifted".

    https://www.cfa.harvard.edu/~dfabricant/huchra/zcat/nz40.dat

    This site says that some galaxies in the Virgo cluster are blue-shifted.

    http://www.seds.org/messier/more/virgo_gal.html

    Aug 03 11, 1:06 AM

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