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A Velocity Dispersion

  1. Nov 4, 2016 #1
    What does mean by velocity dispersion of galaxy? What is the different between stellar velocity dispersion and molecular velocity dispersion?
  2. jcsd
  3. Nov 4, 2016 #2


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    Staff: Mentor

    Welcome to the PF. :smile:

    Please post links to the reading you have been doing about those terms, and then ask specific questions about that reading if you are having trouble understanding something in your links.
  4. Nov 9, 2016 #3
    In this paper the author mentioned " the ratio of stellar to gas velocity dispersion "
    I understand from that there are two types of velocity dispersion , am I right? if so what is the different between them?

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