Radio Galaxy Zoo Talk

Cool star in ARG0003ckm!

  • JeanTate by JeanTate

    SDSS J221733.84+063538.9:

    enter image description here

    The lime-green is (almost certainly) an artifact (but colorful) 😦

    Posted

  • 42jkb by 42jkb scientist, admin

    Why do you think that is an artefact? I looked at a larger image and I don't see anything else in the image that would say to me that this is an artefact.

    Note: not the host of the radio emission in the centre of the image. Object located to the south-west (bottom-right) of the central galaxy.

    Posted

  • JeanTate by JeanTate in response to 42jkb's comment.

    Why do you think that is an artefact?

    The color (it's a pure green, suggesting just a single SDSS band), and the fact that I've come across quite a few of these sorts of things in my time doing Galaxy Zoo (SDSS) classifications

    Note: not the host of the radio emission in the centre of the image.

    Yeah, this star has nothing to do with any radio emission (at least, not FIRST); it's just a cool thing ...

    Posted

  • 42jkb by 42jkb scientist, admin in response to JeanTate's comment.

    Thanks JeanTate. I haven't looked at many SDSS images before.

    Posted

  • JeanTate by JeanTate

    Not quite the same, but here are two similar artifacts (the field is ARG0001z6s, and the host of the almost #triple FIRST source is hidden in the glare of the bright star to the E); centered on SDSS J164004.93+254927.5:

    enter image description here

    Alternatively, "green blobs" are relatively common, and are often found near (red) stars! 😉

    Posted