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SEDIGISM
Structure, Excitation and Dynamics of the Inner Galactic Interstellar Medium (SEDIGISM) was a survey of molecular lines in the 217–221 GHz range with the SHeFI receiver on the APEX telescope. The key spectral targets were 13CO(2-1) and C18O(2-1). Other transitions include H2CO, CH3OH, SO, SO2, HNCO, HC3N, SiO, but their detection is typically restricted to the densest regions.
The SEDIGISM survey covers a longitude range l = (-60°,+31°) and a latitude range of |b| < 0.5°. The latitude range extends to |b| < 1° towards the Central Molecular Zone (CMZ), to b > −0∘.75 towards the Nessie filament around l=338°, and to b < +0∘.75 towards the RCW 120 region around l=348°. The total survey area is 84 square degrees, and the observations cover the velocity range vlsr=(-200,200) km/s.
The intrinsic angular resolution of the SEDIGISM survey was ~30 arcseconds and the velocity resolution was 0.25 km/s for 13CO(2-1) and C18O(2-1). The typical rms sensitivity per 0.25 km/s channel of the original data cubes was σ(T) ~ 0.8 - 1K.
CADE currently delivers 13CO(2-1) and C18O(2-1) integrated intensity and peak brightness maps of the full SEDIGISM region using the survey's public DR1. To facilitate processing, the original WCS FITS data cubes were convolved to 33 arcseconds and binned to 0.5km/s prior to the generation of the HEALpix moment maps delivered by CADE.
Healpix maps made by A. Hughes.
References
- Schuller, F. et al, 'The SEDIGISM survey: First Data Release and overview of the Galactic structure', MNRAS, 2021, 500 (3), 3064
Maps
13CO(2-1) Integrated Intensity : SEDIGISM_13CO_MOM0_1_16384_partial.fits
13CO(2-1) Peak Brightness : SEDIGISM_13CO_TPK_1_16384_partial.fits
C18O(2-1) Integrated Intensity : SEDIGISM_C18O_MOM0_1_16384_partial.fits
C18O(2-1) Peak Brightness : SEDIGISM_C18O_TPK_1_16384_partial.fits
HiPS
For the corresponding HIPS, unzip the directory and put it directly in an Aladin window to display the map
Known Issues
Version History
- v1 CADE maps, February 2022