Galaxy Zoo Starburst Talk

See-through galaxy!

  • sad5a by sad5a

    This is so unusual compared to the other galaxy zoo images I've seen! There's no well-defined center, it's just thin and hazy-looking throughout...does this mean that it's a sparsely populated galaxy? What could cause that?


  • JeanTate by JeanTate

    It's a dwarf galaxy, possibly an irregular; something like the Large Magellanic Cloud, one of our own galaxy's satellite galaxies. Your 'see-through galaxy' does, indeed, have a rather low mass (so far as galaxies go), and no obvious nucleus. Being blue throughout suggests it's "gas-rich", and that it recently experienced a burst of star-formation, like in the last ~100 million years or so. In this sense, it's likely a 'pre-quench' galaxy. 😛

    But what triggered the recent star-formation? That's one of the big open questions, in astronomy today! 😃


  • ElisabethB by ElisabethB moderator

    There is a very blue dot at 6. It's the same color as Hanny's Voorwerp. SDSS calls it a star. Looks cool though ! 😄