In 2007, a rare WO star was discovered in NGC 1313,[8] currently known by its only designation of [HC2007] 31. It is of spectral type WO3.[8] The derived absolute magnitude is about -5,[8] which is very high for a single WO star. (WOs usually have absolute magnitudes of about -1 to -4) This means that the WO is likely part of a binary or a small stellar association.[8]
Two supernovae have been observed in NGC 2841: SN 1962M (type II, mag. 11.7),[9] and SN 1978K (type II, mag. 16).[10]
Features
NGC 1313 has a strikingly uneven shape and its axis of rotation is not exactly in its centre.[11] NGC 1313 also shows strong starburst activity[12] and associated supershells.[13] NGC 1313 is dominated by scattered patches of intense star formation, which gives the galaxy a rather ragged appearance.[14] The uneven shape, the ragged appearance and the strong starburst can all be explained by a galactic collision in the past.[15] However, NGC 1313 seems to be an isolated galaxy and has no direct neighbours. Therefore, it is not clear whether it has swallowed a small companion in its past.[2]
^Materne, J. (April 1979). "The structure of nearby groups of galaxies - Quantitative membership probabilities". Astronomy and Astrophysics. 74 (2): 235–243. Bibcode:1979A&A....74..235M.