Radio Galaxy Zoo Talk

ARG0003978 - possible gravitational lens

  • Dolorous_Edd by Dolorous_Edd

    possible gravitational lens around

    SDSS J082102.26+075147.3 - 1237661069774356528

    faint blue circle, nuff said

    enter image description here

    Posted

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

    Here's a First overlay. Centred on SDSS J082100.80+075127.3, which is ENE of the ARG co-ordinates listed left.

    enter image description here

    The contour overlay image in this post was created from sources, and using methods, described in this RGZ Talk
    thread.     First in red.

    There doesn't seem to be any radio references for SDSS J082102.26+075147.3, but there is recorded First flux emission, and an ALLWISE reference, ALLWISE J082102.29+075147.6.

    SDSS J082102.26+075147.3

    enter image description here

    Posted

  • Dolorous_Edd by Dolorous_Edd

    Thanks, Chris!

    interesting that the compact source seems to be centered on the top part of the blue ring

    Posted

  • JeanTate by JeanTate

    Have you asked about this in another Zooniverse Talk, such as Space Warps (or whatever the current iteration is called)?

    It might be worth checking whether there's any VLASS data on this (do you know how? holler if not); VLASS has a considerably higher resolution than FIRST (~1" vs 7", from memory), so if it's a VLASS point source, it may be possible to distinguish more clearly what the host is.

    Posted

  • Dolorous_Edd by Dolorous_Edd

    My best attempt at producing VLASS / SDSS overlay

    a) compact source seems to be resolved to extended in VLASS

    b) seems to be centered on the arc

    enter image description here

    < Have you asked about this in another Zooniverse Talk, such as Space Warps (or whatever the current iteration is called)?

    < Nah, I have not and frankly I don't have a lot of motivation to do so, Space Warps? their project is devoted to finding lenses in the HSC survey, I doubt they will bother with SDSS candidates from Galaxy Zoo spin-off.

    Posted

  • Dolorous_Edd by Dolorous_Edd

    Turns out, it was also imaged by HST, though it doesn't make things any clearer

    TO DO: VLASS / HST overlay

    enter image description here

    HST / VLASS

    Whatever it is, it does seems to be the source

    enter image description here

    Posted

  • ChrisMolloy by ChrisMolloy

    Here's a VLASS contour overlay.

    enter image description here

    The contour overlay image in this post was created from sources, and using methods, described in this RGZ Talk
    thread.     VLASS contours in yellow.

    Posted

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

    Very cool guys! 😃

    Dolorous_Edd, do you have details of the HST image/observation? For example, what filter was used?

    FWIW, I think it could be gl, or a merger of some kind.

    Posted

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

    It says

    Detector: WFPC2

    Filter: F606W

    Central Wavelength: 5997.000

    Proposal: http://archive.stsci.edu/proposal_search.php?mission=hst&id=8301

    Posted

  • A1001 by A1001

    a amateurs post.

    these papers answer any of the questions?

    2018ApJ...853..177P [ D ,1]
    Astrophys. J., 853, 177-177 (2018/February-1)
    The origin of molecular clouds in central galaxies.
    PULIDO F.A., McNAMARA B.R., EDGE A.C., HOGAN M.T., VANTYGHEM A.N., RUSSELL H.R., NULSEN P.E.J., BABYK I. and SALOME P.
    Simbad objects: 107

    2018ApJ...858...17T [ X ,1]
    Astrophys. J., 858, 17-17 (2018/May-1)
    ALMA observations of molecular clouds in three group-centered elliptical galaxies: NGC 5846, NGC 4636, and NGC 5044.
    TEMI P., AMBLARD A., GITTI M., BRIGHENTI F., GASPARI M., MATHEWS W.G. and DAVID L.
    Simbad objects: 14
    CDS status: being processed

    2017ApJ...848..101V [ A X C ,24]
    Astrophys. J., 848, 101-101 (2017/October-3)
    A ^13^CO detection in a brightest cluster galaxy.
    VANTYGHEM A.N., McNAMARA B.R., EDGE A.C., COMBES F., RUSSELL H.R., FABIAN A.C., HOGAN M.T., McDONALD M., NULSEN P.E.J. and SALOME P

    2015MNRAS.453.1201H [ D ,1]
    Mon. Not. R. Astron. Soc., 453, 1201-1222 (2015/October-3)
    A comprehensive study of the radio properties of brightest cluster galaxies.
    HOGAN M.T., EDGE A.C., HLAVACEK-LARRONDO J., GRAINGE K.J.B., HAMER S.L., MAHONY E.K., RUSSELL H.R., FABIAN A.C., McNAMARA B.R. and WILMAN R.J.
    <Available at CDS (J/MNRAS/453/1201): tableb1.dat tableb2.dat tableb3.dat>

    enter image description here

    Posted