A wide-field camera attached to the European Southern Observatory has created an image that shows the ghost of a giant star
A spooky spider web, magical dragons or the wispy trails of ghosts? What do you see in this image of the Vela supernova remnant?
This beautiful tapestry of colours shows the ghostly remains of a gigantic star, and was captured here in incredible detail with the VLT Survey Telescope, hosted at the European Southern Observatory’s (ESO) Paranal site in Chile.
The wispy structure of pink and orange clouds is all that remains of a massive star that ended its life in a powerful explosion around 11,000 years ago.
When the most massive stars reach the end of their life, they often go out with a bang in an outburst called a supernova.
These explosions cause shock waves that move through the surrounding gas, compressing it and creating intricate thread-like structures.
The energy released heats the gaseous tendrils, making them shine brightly, as seen in this image.
See also: Chemical remains of universe’s first stars discovered
supernova remnant
In this 554-million-pixel image, we get an extremely detailed view of the Vela supernova remnant, named after the southern constellation Vela (The Sails).
You could fit nine full moons in this entire image, and the whole cloud is even larger.
At only 800 light-years away from Earth, this dramatic supernova remnant is one of the closest known to us.
As it exploded, the outermost layers of the progenitor star were ejected into the surrounding gas, producing the spectacular filaments that we observe here.
What remains of the star is an ultra-dense ball in which the protons and electrons are forced together into neutrons — a neutron star.
The neutron star in the Vela remnant, placed slightly outside of this image to the upper left, happens to be a pulsar that spins on its own axis at an incredible speed of more than ten times per second.
wide-field camera
This image is a mosaic of observations taken with the wide-field camera OmegaCAM at the VLT Survey Telescope (VST), hosted at ESO’s Paranal Observatory in Chile.
The 268-million-pixel camera can take images through several filters that let through light of different colours.
In this particular image of the Vela remnant, four different filters were used represented here by a combination of magenta, blue, green and red.
The VST is owned by The National Institute for Astrophysics in Italy, INAF, and with its 2.6-metre mirror it is one of the largest telescopes dedicated to surveying the night sky in visible light.
This image is an example from such a survey: the VST Photometric Hα Survey of the Southern Galactic Plane and Bulge (VPHAS+).
For over seven years, this survey has mapped a considerable portion of our home galaxy, allowing astronomers to better understand how stars form, evolve and eventually die.
Image: This image shows a spectacular view of the orange and pink clouds that make up what remains after the explosive death of a massive star — the Vela supernova remnant. This detailed image consists of 554 million pixels, and is a combined mosaic image of observations taken with the 268-million-pixel OmegaCAM camera at the VLT Survey Telescope, hosted at ESO’s Paranal Observatory. The result is an extremely detailed and stunning view of both the gaseous filaments in the remnant and the foreground bright blue stars that add sparkle to the image.
Credit: ESO/ VPHAS+ team/ Cambridge Astronomical Survey Unit.
