GHIGLS: HI mapping at intermediate Galactic latitude using the Green Bank Telescope

Understand

This paper introduces the data cubes from GHIGLS, deep Green Bank Telescope surveys of the 21-cm line emission of HI in 37 targeted fields at intermediate Galactic latitude.

• The GHIGLS fields together cover over 1000 square degrees at 9.55' spatial resolution.
• The HI spectra have an effective velocity resolution about 1.0 km/s and cover at least -450 < v < +250 km/s.
• GHIGLS highlights that even at intermediate Galactic latitude the interstellar medium is very complex.