NGC 588
Diffuse nebula in the constellation Triangulum
From Wikipedia, the free encyclopedia
NGC 588 is a prominent, giant H II ionized[5] diffuse nebula located in the outskirts of the galaxy Messier 33's spiral arms, within the Triangulum constellation.[6][4] The nebula has two Wolf-Rayet stars, NGC 588-UIT 008 and NGC 588-MC3 and a fairly large population of main sequence stars of 2 to 20 solar masses. The more massive stars in the nebula have a mass of around 40 solar masses. NGC 588 is 4.2 million years old and has a mass of 2300 solar masses.[7]
| Diffuse nebula | |
|---|---|
NGC 588 imaged by Pan-STARRS | |
| Observation data: epoch | |
| Subtype | H II[1] |
| Right ascension | 1h 32.7m 00s[2] |
| Declination | +30° 40′ 00″[2] |
| Distance | z=−0.000580[1] |
| Apparent dimensions (V) | 0.65 arc minutes?[3] |
| Constellation | Triangulum |
| Designations | IRAS 01299+3023[4] |
NGC 588 and NGC 592 (another nebula in the Triangulum galaxy) are both very prominent stellar nurseries in their regions.[7]
Discovery
It was discovered October 2, 1861, by the German–Danish astronomer Heinrich d'Arrest.[8]
