Sh2 132
The Lion Nebula
A thousand light years away, roaring at the universe lies the Lion Nebula. Powered by two massive stars each with a mass 20 times of our own sun. Th ionised gas and matter within the nebula not only glows but has the density to apply gravitational forces and start forming stars
Key Characteristics
Distance:
Approximately 10,000 to 10,400 light-years away from Earth, situated within the Perseus Arm of the Milky Way.
Size:
It spans more than 250 light-years in diameter, appearing in the sky as an area slightly larger than a full moon (roughly 40 arcminutes).
Composition:
It is primarily an H-II region, consisting of ionized hydrogen gas that emits a deep red glow. It also contains significant oxygen (OIII) emissions, which appear as blue-green wisps in narrowband astrophotography.
Star Formation:
While it was historically a site of active star formation, recent observations suggest these processes may currently be suspended, though some sources still identify it as a region where new star systems may form.
ionisation:
The nebula’s glow is powered by the intense ultraviolet radiation from massive, hot stars. Key contributors include two Wolf-Rayet stars (HD 211564 and HD 211853/WR 153), which are at least 20 times more massive than the Sun and characterized by extremely high stellar winds.
Dark Nebulae:
Several dark dust clouds obscure the background light, including LDN 1150 (also known as Barnard 369) and LDN 1154, which form the “facial features” of the lion.