Radio Galaxy Zoo Talk

ARG0001vpc - Is it a ETG?

  • Dolorous_Edd by Dolorous_Edd

    Host is

    Is it ETG? and not distant spiral?

    enter image description here

    SDSS J153200.95+272528.9 - 1237664853651293066

    Posted

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

    It's a disk galaxy, a spiral in fact.

    From PhotoObj, some of the parameters for distinguishing 'elliptical' from 'spiral' (fraDev=0 surely a spiral; =1, likely an elliptical):

    fracDev_u=0, fracDev_g=0, fracDev_r=0.16, fracDev_i=0.39, even fracDev_z^=0.43!

    enter image description here

    If it is indeed the host, it's likely a very good SDRAGN candidate!!

    Overlay on order ...

    ^the redder the band, the more likely fracDev will be closer to 1; this is because most spirals have much bluer arms/disks than their bulges, so a red band will 'see' the bulge as more prominent. Most bulges are 'elliptical'.

    Posted

  • Dolorous_Edd by Dolorous_Edd

    SDSS / FIRST

    Green SDSS obj / Blue WISE sources

    enter image description here

    SDSS J153201.20+272542.8 is a star according to SDSS pipeline

    Posted

  • JeanTate by JeanTate

    Coincidental overlap of two unrelated, distorted #hourglass, one (S) with no SDSS host?

    enter image description here

    The image in this post was created from sources, and using methods, described in this RGZ Talk post. The object at the center of the image is SDSS J153200.95+272528.9

    Posted