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Protostellar Envelope and Jet: L483
Sig10 006e

Credit: NASA/JPL-Caltech/J. Tobin (University of Michigan)

Observation • May 20th, 2010 • sig10-006e


A young protostar and its signature outflow peeks out through a shroud of dust in this infrared image from NASA's Spitzer Space Telescope.

Stars are known to form from collapsing clumps of gas and dust, or envelopes, seen here around a forming star system as a dark blob, or shadow, against a dusty background. The greenish color shows jets coming away from the young star within. The envelope is roughly 100 times the size of our solar system.

Astronomers believe that the irregular shape of the envelope, revealed in detail by Spitzer, might have triggered the formation of twin, or binary stars in this system.

Infrared light with a wavelength of 3.6 microns has been color-coded blue; 4.5-micron light is green; and 8.0-micron light is red.

About the Object

Nebula > Type > Jet
Star > Evolutionary Stage > Protostar
Star > Circumstellar Material > Disk > Protoplanetary

Color Mapping

Band Wavelength Telescope
Infrared 3.6 µm Spitzer IRAC
Infrared 4.5 µm Spitzer IRAC
Infrared 8.0 µm Spitzer IRAC


Position (J2000)
RA =18h 17m 29.9s
Dec = -4° 39' 21.9"
Field of View
7.3 x 7.3 arcminutes
North is 98.0° right of vertical