Radio Galaxy Zoo Talk

Funny galaxy in Galaxy Zoo

  • Budgieye by Budgieye

    Is there a match to something on Radio Galaxy Zoo?

    enter image description here

    Telescope: SDSS
    Right Ascension: 7.7256 °
    Declination: 10.4088 °

    http://skyserver.sdss.org/dr9/en/tools/explore/obj.asp?ra=7.725632727291517&dec=10.408750554307993

    EDIT

    This is the discussion on galaxy zoo.

    Unusual colours in edge-on https://talk.galaxyzoo.org/#/boards/BGZ0000004/discussions/DGZ0002n2e

    Posted

  • Dolorous_Edd by Dolorous_Edd

    Yep, it is this field

    https://radiotalk.galaxyzoo.org/#/subjects/ARG00031mv

    Looks like standard compact radio source .. dunno maybe even triple if look at NVSS

    Posted

  • JeanTate by JeanTate

    It looks a bit like a triple in TGSS too ... but as with NVSS I think that's due to there being several unrelated ~compact sources nearby.

    I recently looked at some of the GZ UNCERTAIN objects (there are >300k of them; I selected ones I thought likely to be spirals). A lot look like mergers, and some have interesting colors, a bit like this fuzzy galaxy (of course, some are also radio sources; all those in this post for example). Here's one example, zsp 0.094 SDSS J225922.96+143154.0, in ARG0002pev:

    enter image description here

    Not quite the same mix of colors, and rather different morphology, is zsp 0.094 (coincidence!) SDSS J152927.75+123910.3, in ARG0002u4d:

    enter image description here

    Perhaps the funnest find was zsp 0.196 SDSS J122822.29+264344.1, in ARG0001x7e (why did I think this was perhaps the funnest?**):

    enter image description here

    There are thousands of weird galaxies in SDSS, and the various catalogs make finding them relatively straight-forward (lots of false positives of course); radio sources optional ... (holler if you'd like some suggestions on how go about finding such weirdos).

    ** hint: in one of the KS16 catalogs it has a 'spirality' of 0.73, but in GZ its P_CS_DEBIASED is just 0.07 (P_EL_DEBIASED is 0.75)

    Posted

  • Budgieye by Budgieye

    Thank you for looking up the radio data.

    Therefore, I can conclude that the unusual colour of the galaxy is due to something happening in the galaxy, and is not just an artifact which can be ignored.

    Info posted in https://talk.galaxyzoo.org/#/boards/BGZ0000004/discussions/DGZ0002n2e

    Ummm. a triple means that it has lobes?

    Posted

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

    Ummm. a triple means that it has lobes?

    Yep

    Posted

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

    Therefore, I can conclude that the unusual colour of the galaxy is due to something happening in the galaxy, and is not just an artifact which can be ignored.

    I just posted a reply in the GZ Talk thread; yes indeed, the main colors are likely not artifacts (some of the gradients and fringing may be artifacts). I don't think it's possible to say with certainty that there's recent (perhaps on-going) star-formation on one side and not the other; the green (right) may be blue/white turned to green by intervening dust, which the galaxy seems to have lots of. Could there also be extensive HI regions, or 'green pea'-like [OIII] emission? Without a spectrum, who can say?

    Posted

  • Budgieye by Budgieye

    Thank you for the analysis.

    Posted