AAO image reference AAT 11. « Previous || Next »
Top left is NE. Image width is about 8 arc min
Image and text © 1977-2002, Anglo-Australian Observatory, photograph by David Malin.
Towards the end of the long life of many low mass stars, some similar to the Sun, internal changes occur which cause them to shed most of their outer layers of gas, leaving behind a tiny, hot star. Many stars puff off their gas in a spherical shell. The shell can be very bright and superficially resembles the disc of a planet, hence the name for this class of object. In some cases, as in this example, the gas expands unevenly and an irregular planetary nebula results. In NGC 6302, some of the gas ejected by the star is travelling outwards at around 400 kilometers per second, indicating a particularly violent outburst.
Entry from NGC 2000.0 (R.W. Sinnott, Ed.) © Sky Publishing Corporation, 1988:
NGC 6302 Pl 17 13.7 -37 06 s Sco 0.8 13. p pB, E pf, PNFor details of photographic exposure, search technical table by AAT reference number.