The Spaghetti Nebula - Supernova Remnant Simeis 147

In this image, taken by +Nicolas Kizilian using a William Optics Zenithstar 66 Telescope and a Moravian G2-8300 camera, you can see the Spaghetti Nebula (Simeis 147, Sha 2-240). It is a supernova remnant (https://goo.gl/QTUuiz) in the constellations of Auriga (https://goo.gl/NT8YKH) and Taurus (https://goo.gl/9FLfn0), about 3,000 light-years away from Earth. The remnant has a diameter of roughly 140 light-years.

The supernova remnant has an estimated age of about 40,000 years, scientists believe that the pulsar PSR J0538+2817 (https://goo.gl/dYORyR) is the result of the supernova explosion that formed Simeis 147, it is emitting strong radio signals.

In this image you can mostly see the reddish glow of ionized hydrogen, indicating the location of the shock wave produced by the supernova explosion, heating up the gas and ionizing it.

Simeis 147 was discovered in 1952 by the Russian astronomer Grigory Shajn (https://goo.gl/oRfvJj).

More information here:
https://en.wikipedia.org/wiki/Simeis_147
https://apod.nasa.gov/apod/ap121009.html

The image uses a total exposure time of 42 hours (Ha = 43x20m / OIII = 54x20m / SII=42x20m), it was taken using narrowband filters (https://goo.gl/5yEqCZ), focusing on the emissions of hydrogen, oxygen, and sulfur (HOS image). It is a 4 panel mosaic shot over 6 nights (28 Nov to 4 Dec 2016).

More on colors in astrophotography:
https://photographingspace.com/ap-color/

What is a supernova remnant?

Supernova remnants are the results of supernovae (https://goo.gl/VhJNhj) explosions. They consist of ejected material from their stellar progenitors and the interstellar material the expanding shock wave is sweeping up. Aside from visible light - they are emission nebulae (https://goo.gl/QtI28t), driven by the heat of the shock wave - supernova remnants can be very bright in radio and X-ray emissions. Within the structure of ejected material you can find a neutron star (https://goo.gl/f22feI) or black hole (https://goo.gl/AYbW7Q), if the supernova was a core-collapse supernova (https://goo.gl/dRqFoo). Read more on it here:
https://en.wikipedia.org/wiki/Supernova_remnant

What is a pulsar (pulsating radio star)?

A pulsar is a type of neutron star (https://goo.gl/f22feI), those are extremely dense and massive stars made up almost entirely of neutrons.They are the result of a gravitational collapse of a massive star following a supernova. Pulsars are highly magnetized and have short rotational periods. They are emitting beams of electromagnetic radiation which, when oriented in a way so a beam is facing Earth, can be detected. Because pulsars are rotating this beam rotates in an out of view resulting in a pulsating signal. More information here:
https://en.wikipedia.org/wiki/Pulsar
https://en.wikipedia.org/wiki/Neutron_star
https://en.wikipedia.org/wiki/Supernova#Core_collapse

Image credit: Simeis 147 +Nicolas Kizilian https://goo.gl/XByRWx Used with permission

If you like this image, you can find Nicolas here on G+ (+Nicolas Kizilian), on Twitter (https://twitter.com/NKizilian) and on Facebook (https://www.facebook.com/NicolasKizilian) and see more of his work here on his website:
http://www.astropixels.fr

Thank you for your interest in this Astronomy/Astrophysics collection. Maybe add me on Google+ (+Pierre Markuse) and Twitter (https://twitter.com/Pierre_Markuse) or have a look at the Space/Space Technology collection here: https://goo.gl/5KP0wx

#science #astronomy #astrophotograpy #emissionnebula #space #photography #supernovaremnant #snr #simeis147 #supernova #pulsar
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