Radio Galaxy Zoo Talk

ARG000kr0 radio source

  • 1001G by 1001G

    enter image description here

    SDSS J082700.14+501919.1

    Posted

  • JeanTate by JeanTate in response to 1001G's comment.

    How amazing! 😮

    The object at the same location (on the sky) as the radio source is, indeed, a STAR (SDSS J082700.14+501919.1, as 1001G said).

    It was a BOSS target, and the spectrum is that of an F3/F5V star:

    enter image description here

    Any hint of a second redshift system in this spectrum, one that's >~0.4 say?

    A most interesting overlap! 😄

    Posted

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

    The SDSS image shows faint red smudge at 1 o'clock position against the star, so maybe distant ETG partly obscured by the star?

    Posted

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

    Yes.

    And there are several faint red smudges in the field, so perhaps there's a background cluster; for example: SDSS J082658.15+501900.1 (left, z_ph 0.673 ± 0.1031/0.109 ± 0.1247), SDSS J082701.97+501938.2 (center, STAR), SDSS J082659.36+502026.8 (right, z_ph 0.370 ± 0.0219/0.368 ± 0.0547):

    enter image description here enter image description here enter image description here

    There's a vague hint that there's something more than just a F3/F5V star in the spectrum (the continuum between ~540 and ~700 nm is consistently higher than the model), but without tools I do not have I can't check that out.

    Posted