HST Reveals Growth Processes of Young Star

A NASA/ESA Hubble Space Telescope image of a huge, complex cloud of gas heated by shock waves from jets of gas produced by the birth of a new star. Called Herbig-Haro object #2 (HH-2) the cloud is a visible manifestation of physical processes that occur early in the evolution of a star.

The photograph was produced from three images obtained with the Wide Field/Planetary Camera (WFIPC). Exposures were taken through different filters to examine light emitted by HH-2 in emission lines of ionized oxygen (coded blue), hydrogen (coded green), and sulfur (coded red). The blue spots represent the highest temperature gas. The red regions identify cooler gas. In the brightest portions of the object, emissions from all three components combine to produce white features.


Richard Schwartz (Univ. of Missouri, St. Louis), Martin Cohen (Univ. of California, Berkeley), Burton Jones (Univ. of California, Santa Cruz), Karl-Heinz Bohm (Univ. of Washington), John Raymond and Lee Hartmann (HarvardSmithsonian Center for Astrophysics), Reinhard Mundt (Max-Planck-lnstitut fur Astronomle), Michael Dopita (Mt. Stromlo and Siding Spring Observatories), and Angie Schultz (Washington Univ. at St. Louis/Univ. of Missouri at St. Louis).

About the Image

NASA press release
NASA caption
Release date:14 April 1993, 06:00
Size:2503 x 2400 px

About the Object

Name:HH 2
Type:• Milky Way : Star : Evolutionary Stage : Young Stellar Object
• Milky Way : Nebula : Type : Jet
• X - Stars Images/Videos

Image Formats

Large JPEG
2.4 MB
Screensize JPEG
208.6 KB

Colours & filters

502 nm Hubble Space Telescope
656 nm Hubble Space Telescope
673 nm Hubble Space Telescope

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