The holiday season may be over on Earth, but it never ends in Westerhout 5, also known as the Soul Nebula.
This red light also reveals a range of fascinating features, such as a so-called free-floating evaporating gaseous globule . Seen as a dark, tadpole-shaped region in the upper center left of the image, this frEGG is officially named KAG2008 globule 13 and J025838.6+604259. The Soul Nebula, located 7,000 light-years from Earth, is infused with a red glow in this image from the Hubble Space Telescope.
when energetic radiation from young, hot stars ionizes surrounding gas by stripping away electrons. This causes the gas to disperse away from those bright stars in a process called photoevaporation, which may help to halt star formation in nebulas. In EGGs, the gas is so dense that this photoevaporation process happens much more slowly than it does in surrounding regions of gas. This slower photoevaporation and the protection of gas from dispersal allow gas to remain dense enough to collapse and form protostars, which eventually go on to become full-fledged. This means astronomers are interested in frEGGs and EGGs because they are the areas of nebulas where star birth may have once taken place.
Astronomers discovered the existence of EGGs only recently. A prominent example of these structures is located at the tips of the in a 1995 Hubble image of the nebula. frEGGs are an even newer find; they are distinct from EGGs because they are detached from surrounding gas, giving them a distinct tadpole-like shape.
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