Circinus West Stellar Nursery: Herbig-Haro Objects & More | Victor Blanco Telescope

Circinus West Stellar Nursery: Herbig-Haro Objects & More | Victor Blanco Telescope

A close-up of two Herbig-Haro (HH) objects found in the Circinus West molecular cloud: HH 76 (above center of image) and HH 77 (lower left). HH objects are glowing red patches of nebulosity commonly found near newborn stars. They form when fast-moving gas thrown out by stars smashes into slower-moving gas in the surrounding molecular cloud or interstellar medium.

A collection of Herbig-Haro (HH) objects found in the Circinus West molecular cloud. HH objects are glowing red patches of nebulosity commonly found near newborn stars. They form when fast-moving gas thrown out by stars smashes into slower-moving gas in the surrounding molecular cloud or interstellar medium.

A close-up of Herbig-Haro (HH) object 139, found in the Circinus West molecular cloud. HH objects are glowing red patches of nebulosity commonly found near newborn stars. They form when fast-moving gas thrown out by stars smashes into slower-moving gas in the surrounding molecular cloud or interstellar medium.

A planetary nebula found in the Circinus West molecular cloud. Planetary nebulae are the outermost layers of aging red giant stars, thrown out into space at the end of a star’s life.

These are examples of interesting features found in the celestial shadow known as the Circinus West molecular cloud. This image was taken with the Department of Energy-fabricated 570-megapixel Dark Energy Camera (DECam)—one of the most powerful digital cameras in the world. Within this stellar nursery's opaque boundaries, infant stars ignite from cold, dense gas and dust, while outflows hurtle leftover material into space.

Another signpost of star formation is the presence of Herbig-Haro (HH) objects. HH objects are glowing red patches of nebulosity commonly found near newborn stars. They form when fast-moving gas thrown out by stars smashes into slower-moving gas in the surrounding molecular cloud or interstellar medium. Visually scanning Circinus West will reveal countless HH objects. 

DECam is mounted on the U.S. National Science Foundation Víctor M. Blanco 4-meter telescope at Cerro Tololo Inter-American Observatory in Chile, a Program of NSF NOIRLab.

Credit: CTIO/NOIRLab/DOE/NSF/AURA
Image Processing: T.A. Rector (University of Alaska Anchorage/NSF NOIRLab), D. de Martin & M. Kosari (NSF NOIRLab)
Release Date: April 24, 2025

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