The Hubble Space Telescope recently photographed a trail in the depths of the reflection nebula NGC 1977.
In the Hubble photograph the jet itself isorange, and the ionizing gas is red. The bright western portion of the jet is surrounded by a series of orange arcs that decrease in size with increasing distance from the star, forming a cone or spindle shape.
NGC 1977, like its satellites NGC 1975and NGC 1973, is part of the Running Man complex of reflection nebulae in the constellation Orion. This means that it does not emit light on its own, but rather reflects light from nearby stars, like a street lamp illuminating fog. Hubble observed this region to look for stellar jets and planet-forming disks around young stars.
Also this week, Hubble discoveredHerbig object —Haro HH 45. Let us remember that these are small areas of nebulae associated with young stars. They form when gas ejected from these stars interacts with nearby clouds of gas and dust at speeds of several hundred kilometers per second.
In this image, blue represents ionized oxygen (O II) and purple represents ionized magnesium (Mg II).
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