Galaxy Zoo Talk

Can galaxies really appear this dense and defined?

  • Jeff.Bower by Jeff.Bower

    This appears to look more like a planetoid with the red then blue shadings. Looks too defined around the edges to be a garden variety elliptical galaxy.

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  • Jeff.Bower by Jeff.Bower

    #questions

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  • Budgieye by Budgieye moderator

    Welcome, Jeff.Bower. Yes, this is really a galaxy. I used to be very annoyed with the small denses galaxies like this. They are usually intensely star-forming so are much more interesting than they appear.

    EDIT: blue and red shading is an artifact of poor stacking of the 2 coloured images.

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  • Budgieye by Budgieye moderator

    AMAZING GALAXY OF THE WEEK: Back at the beginning of Galaxy Zoo some
    of our vigilant volunteers started spotting a type of galaxy that
    appeared unusual. They are small, round and greenish-blue. Their
    colour is due to an unusually high rate of star formation. It turned
    out that they were an entirely new class of galaxy! Their discovery is
    a great example of the power of citizen science.

    https://scontent-lht6-1.xx.fbcdn.net/v/t1.0-9/10291774_536186216494071_866555313663599379_n.jpg?oh=7e9d5a71113ca3accfc9209c2fff1655&oe=5AC5C6CD

    https://www.facebook.com/therealzooniverse/photos/rpp.162907460488617/536186216494071/?type=3&theater

    Just a reminder that the current images don't have green in them.

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  • Ghost_Sheep_SWR by Ghost_Sheep_SWR in response to Budgieye's comment.

    AND

    Although most will be bad stacking / galaxy-star overlap etc. I'm not convinced none are actually two-coloured, either because of merger or some other process. Maybe something fresh and new in there...

    There are some good examples in the blue-red pill thread that are bi-coloured in multiple surveys.

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