The Galactic Center and the surrounding Central Molecular Zone comprise the most active star formation region in the Milky Way. This 2 x 1 degree field was imaged at 20 cm (purple) with the NRAO Very Large Array, tracing H II regions that are illuminated by hot, massive stars, supernova remnants, and synchrotron emission. Emission at 1.1 mm (orange) was observed with the Caltech Submillimeter Observatory and highlights cold (20-30 K) dust associated with molecular gas. Some of this material will form stars within in the next few million years; the remainder will be blown away. The diffuse cyan and colored star images are from the Spitzer Space Observatory's Infrared Array Camera. The cyan is primarily emission from stars, the point sources, and from polycyclic aromatic hydrocarbons (PAHs), the diffuse component.
Legacy Astronomical Images
NRAO/AUI/NSF does not hold full copyright for this image. Contact the archivist for details.
Legacy Astronomical Image
Adam Ginsburg (Univ of Colorado - Boulder), John Bally (Univ of Colorado - Boulder), Farhad Yusef-Zadeh (Northwestern), Bolocam Galactic Plane Survey team, GLIMPSE II team
Very Large Array (VLA)
Type of Observation
Center of Image
RA 17:46:57.000, Dec: 28:33:31.000
Field of View
2.000000 x 1.000000 degrees
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Galactic Sources Series
Star Forming Regions Unit
Legacy Astronomical Images, “Galactic Center,” NRAO Archives, accessed December 3, 2021, https://www.nrao.edu/archives/items/show/33484.