Galaxy Zoo Talk

stars or spheroid galaxies

  • silkwire by silkwire

    there are so many round of them that I begin to suspect that I missclassified stars as galaxies

    Posted

  • ElisabethB by ElisabethB moderator

    Hi silkwire and welcome to the Zoo

    First of all, always classify the object in the center of the image.

    Here that is a smooth and round galaxy. The other purple objects in this image are also galaxies. The two blue dots are foreground stars from our galaxy.

    And don't worry about misclassifying. Every image will be looked at by lots of people, so any mistakes won't matter that much.

    Happpy hunting ! 😄

    Posted

  • silkwire by silkwire in response to ElisabethB's comment.

    Thanks for clarification!
    Perhaps just another question: Should we better classify those galaxies as "smooth" (=featureless) or "feature or disk" > "not edge on" > "no bar" > "no spiral" > "obvious or dominant bulge"? A more or less bulge-like feature is the only additional property in most cases. On the other hand, this is sometimes so dominant that it might not be counted as a bulge because the "bulge" in fact is the whole sphere.

    Posted

  • ElisabethB by ElisabethB moderator

    For the galaxy in this image, I'd go for smooth and round. You should only click features, if there are, well, features ! 😄

    But just answer the questions as well as you can ! 😄

    happy hunting !

    Posted