Home > Galaxies, Supernovae > Supernova SN2015F in Galaxy NGC 2442 28-3-15

Supernova SN2015F in Galaxy NGC 2442 28-3-15

ngc-2442-stacked4

I fancied a change of scenery after all of the recent solar activity of various sorts and ventured south of the equator this time. As many of you who read this blog will know I often like to take images of supernovae which briefly appear in distant galaxies and the current brightest supernova is SN2015F. I reserved some time at the iTelescope Siding Spring observatory in Australia and used their half metre T31 Planewave telescope to capture this image.

Supernova 2015F was discovered on 9/3/15 by Berto Monard. It is a Type Ia currently at magnitude 13.3 and is located within the intermediate spiral galaxy NGC 2442, more commonly known as the Meathook Galaxy, in the constellation Volans (southern hemisphere). The Meathook Galaxy lies 50 million light years away and was first discovered by John Herschel.

Type Ia supernovae are fairly common in galaxies with old star populations and are really useful for determining distances between objects and even the age of the universe. Type Ia’s are the result of a white dwarf star exploding in a binary star system due to complex gravitational interactions between the white dwarf and a much larger companion star. The white dwarf grows to approximately 1.4 times the size of the Sun and then becomes unstable and explodes, destroying the star completely.

Imaged 28/3/15 10.28pm Australia time (11.28am UTC) on iTelescope T31 CDK 500mm Planewave with FLI-PL09000 camera. 3×300 sec, Bin 1, Luminance, RA: 07h 36m 18.0s DEC: -69° 31′ 59″ (J2000). Processed in MaxImDL5, DeepSkyStacker 3 and Photoshop CS2.

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