Galaxy Zoo Talk

How to classify AGNs?

  • pocketom by pocketom

    I'm still not sure when it comes to the question AGN or not? This one looks covered in gas clouds but a faint bar and nucleus is visible also in the UV band. Good sign for an AGN?

    I'd be interested if there is a general appoach on finding AGNs on Galaxyzoo for those cases where you dont have a spectrum. Can anybody explain?

    Posted

  • fuzz_lightyear by fuzz_lightyear

    http://www.galaxyzooforum.org/index.php?topic=279841.msg628507#msg628507
    Re: Sought: AGN with big companion galaxies

    Posted

  • vrooje by vrooje admin, scientist

    AGN can be difficult to spot without extra data such as a spectrum (and even then they can be missed). If you definitely see what looks like a bright star right at the heart of a galaxy it may very well be an AGN (though it could also be a nuclear star cluster), but lack of an optical feature doesn't mean it's not there.

    If you think you've spotted one, though, do tag it here! 😃

    Posted

  • pocketom by pocketom

    All right, thanks guys!

    Posted