Object seemingly more active in the infrared rather than radio emission.

• by greenwatch44

  Not sure of the correct discussion group for this.

  Object ARG00004dl looks to be more active in the infrared than radio. As this does not seem
  to be covered in the tutorial is this relevant in the marking or is position the only interest?

  Posted December 20, 2013 7:25 PM

• by ivywong scientist, admin

  I think that this is an IR resolution issue. Check out this optical image of the same field: http://ned.ipac.caltech.edu/dss/NVSS_J070237+603008_1.gif

  IR is more sensitive to starlight and impervious to dust obscuration and so will pick up most galaxies quite easily. Does this help?

  Posted December 20, 2013 10:43 PM

• by greenwatch44

  Ok that helps. Can't see the optical image as the link gives me 404 link not found. In this case always mark the
  middle of the infrared object is the best way to proceed?

  Posted December 21, 2013 2:34 PM