Published On: Mon, Aug 24th, 2015

ESO Views a Ghost of a Dying Star – Planetary Nebula ESO 378-1

A new design from ESO’s Very Large Telescope provides a best perspective to date of heavenly effluvium ESO 378-1.

This unusual bubble, intense like a spook of a star in a vivid dark of space, might seem abnormal and mysterious, though it is a informed astronomical object: a heavenly nebula, a ruins of a failing star.

Nicknamed a Southern Owl Nebula, this shimmering universe is a heavenly effluvium with a hole of roughly 4 light-years. Its spontaneous name relates to a visible cousin in a northern hemisphere, a Owl Nebula. ESO 378-1, that is also cataloged as PN K 1-22 and PN G283.6+25.3, is located in a constellation of Hydra (The Female Water Snake).

Like all heavenly nebulae, ESO 378-1 is a comparatively ephemeral phenomenon, durability usually a few tens of thousands of years, compared to a standard stellar lifetime of several billion years.

Planetary nebulae are combined by a ejected and expanding gas of failing stars. Although they are shining and intriguing objects in a initial stages of formation, these froth blur divided as their basic gas moves divided and a executive stars grow dimmer.

For a heavenly effluvium to form, a aging star contingency have a mass reduction than about 8 times that of a Sun. Stars that are heavier than this extent will finish their lives in thespian conform as supernova explosions.

Panning opposite a heavenly effluvium ESO 378-1

As these reduction large stars grow aged they start to remove their outdoor layers of gas to stellar winds. After many of these outdoor layers have dissipated, a remaining prohibited stellar core starts to evacuate ultraviolet deviation that thereafter ionizes a surrounding gas. This magnetism causes a expanding bombard of resounding gas to start to heat in splendid colors.

After a heavenly effluvium has faded away, a leftover stellar vestige will bake for another billion years before immoderate all a remaining fuel. It will thereafter turn a little — though prohibited and really unenlightened — white dwarf that will solemnly cold over billions of years. The Sun will furnish a heavenly effluvium several billion years in a destiny and will thereafter also spend a twilight years as a white dwarf.

Planetary nebulae play a essential purpose in a chemical improvement and expansion of a Universe. Elements such as CO and nitrogen, as good as some other heavier elements, are combined in these stars and returned to a interstellar medium. Out of this element new stars, planets and eventually life can form. Hence astronomer Carl Sagan’s famous phrase: “We are done of star stuff.”

This design comes from a ESO Cosmic Gems program, an overdo beginning to furnish images of interesting, intriguing or visually appealing objects regulating ESO telescopes for a functions of preparation and open outreach. The module creates use of telescope time that can't be used for scholarship observations. All information collected might also be suitable for systematic purposes, and are done accessible to astronomers by ESO’s scholarship archive.

Source: European Southern Observatory

About the Author

Leave a comment

XHTML: You can use these html tags: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>