Galaxy Zoo Talk

Green dot

  • Reinout by Reinout

    Is the green dot part of the galaxy or a star that is in front of it?

    Posted

  • JeanTate by JeanTate in response to Reinout's comment.

    Welcome to Galaxy Zoo, Reinout! 😃

    The green dot looks like a foreground star, in our own galaxy. I don't think it's an SDSS artifact, because it appears in both POSS1 and POSS2 surveys (based on scanned photographic plates, taken with the Palomar Schmidt telescope/camera; for more on this, see this SDSS link). That it's in both those surveys would suggest that it's not a transient feature - such as a supernova - in the galaxy itself.

    Hope this helps, and happy hunting! 😄

    Posted

  • Reinout by Reinout in response to JeanTate's comment.

    Thanks for the swift reply!

    Posted