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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 maps of the full SEDIGISM region using the survey's public DR1. To facilitate manipulating the data, the HEALPix maps are also delivered in NSIDE=16384 (no smoothing before).
Healpix maps made by D. Paradis and A. Hughes.
References
- 'The SEDIGISM survey: First Data Release and overview of the Galactic structure', Schuller, F. et al, MNRAS, 2021, 500, 3064 https://ui.adsabs.harvard.edu/abs/2021MNRAS.500.3064S
If you make use of the SEDIGISM data in your publication please also include the following in the acknowledgment section: “This publication is based on data acquired with the Atacama Pathfinder Experiment (APEX) under programmes 092.F-9315 and 193.C-0584. APEX is a collaboration among the Max-Planck-Institut fur Radioastronomie, the European Southern Observatory, and the Onsala Space Observatory. The processed data products are available from the SEDIGISM survey database located at https://sedigism.mpifr-bonn.mpg.de/index.html, which was constructed by James Urquhart and hosted by the Max Planck Institute for Radio Astronomy.”
Maps
13CO(2-1) Integrated Intensity :
SEDIGISM_13CO_MOM0_1_32768_partial.fits
SEDIGISM_13CO_MOM0_1_16384_partial.fits
C18O(2-1) Integrated Intensity :
SEDIGISM_C18O_MOM0_1_32768_partial.fits
SEDIGISM_C18O_MOM0_1_16384_partial.fits