I Zwicky 18
(I Zw 18, Zw I 18)
(blue compact galaxy with low metallicity)
I Zwicky 18 (I Zw 18) is a blue compact galaxy
(i.e., with star formation) with very low metallicity.
Metallicity is so low that it is presumed to include and form
Population III stars. The low metallicity and
early stars also made astronomers assume the galaxy
was very young, but eventually older stars were discovered.
(galaxy,dwarf galaxy)
Further reading:
https://en.wikipedia.org/wiki/I_Zwicky_18
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=ZW+I+18
https://hubblesite.org/contents/media/images/2004/35/1621-Image.html
https://ui.adsabs.harvard.edu/abs/2015MmSAI..86..294A/abstract
Redshift | Parsecs /Distance | Lightyears /Lookback Years | | |
.0042 | 18Mpc | 59.0Mly | | I Zwicky 18 |
|
Coordinates: | I Zw 18 J093402.0+551428 |
|
Referenced by pages:
Catalog of Galaxies and Clusters of Galaxies (CGCG)
dwarf galaxy
Index