ELGs in the 820 nm airglow window

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ELGs in the 820 nm air-glow window
Sergio Pascual (UCM) Jesús Gallego (UCM) Pablo
Pérez-Gonzalez (UA)
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Description of the sample

• Objects selected by their color excess in a
  narrow-band filter.
• Different lines at different redshifts can be
  selected.
• Surveyed around 0.3 square degrees in ELAIS-N1
• Colors from SDSS and WFS

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Spectroscopic confirmation

• Using TWIN (3.5m CAHA) and ISIS (WHT)
• Spectral coverage
• Blue 400 700 nm (including OII, OIII and
  H?)
• Red 750 -850 nm (??, NII and SII)
• Confirmed 20 ?? emitters at z0.24 and 4 OIII
  emitters at z0.6

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