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CO Excitation across the Circumnuclear Disk

The circumnuclear disk, a molecular gas disk surrounding the ionized gas of the Galactic center, gives us the unique opportunity to study spatially resolved molecular gas close to a massive black hole and investigate in detail the gas properties and the effects of the different local processes. The characterization of the molecular gas can be obtained with the CO excitation analysis, combining a sample of CO transitions.

Keywords:
GREAT
Emission lines
Molecular Clouds
interstellar medium
Galaxy Center
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Exploring the CMZ: the Arches Cluster

The Arches Cluster, one of the densest star cluster in our galaxy, is located within the Galactic Center’s Central Molecular Zone, just about 25 pc from Sagittarius A*. Maps of this cluster are available through the SOFIA archive, including: spectrally-resolved maps of the [CII] line from GREAT, wide-field maps of the [CII] and [NIII] 57 µm lines from FIFI-LS, and 25 µm and 37 µm FORCAST maps.

Keywords:
FORCAST
GREAT
galactic center
dynamics
Emission lines
HII regions
interstellar and intergalactic medium
massive stars
dust
Spectroscopy
star formation
stellar evolution and models
Young stars and protostellar objects
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Galactic Center Legacy Program

The inaugural Legacy Program used the FORCAST instrument to observe the Galactic Center using the 25-micron and 37-micron bands. The data have unprecedented spatial resolution – six times higher than past observations — resulting in a vastly improved view of warm dust in the center of the galaxy and revealing signatures of star formation in exquisite detail.

Keywords:
FORCAST
dust
star formation
imaging
galactic center
Galactic Bulge
Galaxy morphology and structure
HII regions
interstellar and intergalactic medium
multiwavelength study
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