Radio Galaxy Zoo Talk

J0238+0233 - a "doublelobed spiral" found by zooite Tony Wei

  • JeanTate by JeanTate

    SDSS J023832.67+023349.1 has, very obviously, an AGN. And that is likely making the SDSS photometric pipeline go crazy; z_ph 0.479 ± 0.1393/0.301 ± 0.1661. The galaxy, at whose center sits the AGN, is a somewhat inclined spiral; my guess is its redshift is ~0.1 ... much greater than this and it'd be among the largest (physical size) spirals in the local universe. Morphology is hard to ascertain, given the well-known effect of a bright AGN on both the SDSS image and humans' perceptions (vrooje studied this, in the 'fake AGN' work in GZ).

    Tony Wei discovered this galaxy, and its associated doublelobes, and reported it in a post dated February 28, 2014, in the (now closed) Galaxy Zoo forum (GZF); I posted a simple FIRST-and-NVSS-overlay-on-SDSS-image in the GZF here. I have not been able, so far, to find the ARG ID associated with any of the FIRST sources.

    enter image description here

    enter image description here

    Pretty cool, eh?

    Boilerplate: SDSS image per http://skyservice.pha.jhu.edu/DR10/ImgCutout/getjpeg.aspx, FIRST (red) contours derived from the FITS file produced using SkyView with Python code described in this RGZ Talk thread. Image center is the galaxy SDSS J023832.67+023349.1 (J2000.0). "z_ph" is an SDSS photometric redshift of the galaxy in the center.

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

    http://radiotalk.galaxyzoo.org/#/subjects/ARG0003o4w is centred on the upper-left lobe. This distinctive AGN stuck in my memory and I knew it was in my collection (CRGS0000ob) of disturbed or irregular host galaxies somewhere 😉

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

    Right, well spotted! 😄

    Even stranger ... I myself started a thread on it, in which I explicitly identified the host, ARG0003o4w - complicated emission, even more so in NVSS, possibly Xshaped? 😮

    Clearly, my tracking of 'doublelobes associated with spirals' candidates is less than perfect 😦 (but at least I did record the fact that I'd posted a contour overlay image) 😃

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  • Dolorous_Edd by Dolorous_Edd

    Yeah, nice one

    Saw this one in January 2014

    http://radiotalk.galaxyzoo.org/#/subjects/ARG0003o5g

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  • JeanTate by JeanTate in response to Dolorous Edd's comment.

    Yep, antikodon commented on it on/at January 4 2014 9:39 PM

    Sure is hard to be sure you've found the first zooite to have mentioned/reported/etc an interesting object! 😃

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