Foreground Data


Product Name
EBHIS HI Column Density
Coord. System
Projection Type
HEALPix, ring, res 10 (Nside=1024)


The Effelsberg-Bonn HI Survey (EBHIS) is a 21-cm survey performed with the 100-m telescope at Effelsberg. It covers the whole northern sky out to a redshift of z ~ 0.07 and comprises HI line emission from the Milky Way and the Local Volume. This dataset is the atomic neutral hydrogen (HI) column density map derived from the Milky-Way part of EBHIS (|Vlsr| < 600 km/s).


Argelander-Institut für Astronomie (AIfA) and Max-Planck-Institut für Radioastronomie (MPIfR)


Permission is granted for publication and reproduction of this material for scientific, scholarly, educational, and private non-commercial use by the Argelander-Institut für Astronomie (AIfA) and the Max-Planck-Institut für Radioastronomie (MPIfR), Germany. In addition, please also use the following statement in articles using the data: "The EBHIS data are based on observations performed with the 100-m telescope of the MPIfR at Effelsberg. EBHIS was funded by the Deutsche Forschungsgemeinschaft (DFG) under the grants KE757/7-1 to 7-3."

Frequency1420 MHz
CoverageAll sky
Bandpass1417.5 - 1423.5 MHz
Sensitivity4.7 x 1018 cm-2
ReferenceB. Winkel et al., AA 585, A41, 2016 ADS

Further details can be found in:

"The Effelsberg-Bonn HI Survey: Milky Way gas. First data release", Winkel, B., et al. 2016, Astron. Astrophys., 585, A41 ADS.

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