I Zwicky 18
| I Zwicky 18 | |
|---|---|
 I Zwicky 18 observed by the Hubble Telescope | |
| Observation data (J2000 [1] epoch) | |
| Right ascension | 09h 34m 02.0s[1] |
| Declination | 55° 14′ 28″[1] |
| Redshift | 751±2 km/s |
| Distance | 0.059 Gly |
| Characteristics | |
| Type | Irr [2] |
| Notable features | Very young galaxy [2][3] |
| Other designations | |
| UGCA 166, SBS 930+554, KUG 930+554, AGC 190351, HFE2003 PSX-01, CBB2012 79 | |
The I Zwicky 18 is an irregular dwarf galaxy. It is 45 million years light from Earth in the constellation of the Ursa Major. It was identified by first time in the 1930s by the astronomer Fritz Zwicky.
A young galaxy
[change | change source]I Zwicky 18, only 500 million years of age, is a recently born galaxy compared with most.[3] It is still making population III stars, almost entirely made of hydrogen and helium. The Milky Way is about 12,000 million years old.
Related pages
[change | change source]Other websites
[change | change source]- NASA/IPAC Extraglactic Database
- I Zwicky 18 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
References
[change | change source]- ↑ 1.0 1.1 1.2 "SIMBAD Astronomical Database".
- ↑ 2.0 2.1 "NASA - Hubble Finds 'Dorian Gray' galaxy". Archived from the original on 2016-04-25. Retrieved 2016-10-27.
- ↑ 3.0 3.1 HubbleSite. "HubbleSite:I Zwicky 18: possibily the youngest galaxy ever seen".