HD1 is a proposed high-redshift galaxy, which is considered (as of April 2022) to be one of the earliest and most distant known galaxies yet identified in the observable universe. The galaxy, with an estimated redshift of approximately z = 13.27, is seen as it was about 324 million years after the Big Bang, which was according to scientists around 13.787 billion years ago.
Key facts
- Galaxy.name
- HD1
- Galaxy.image
- File:Three-color image of galaxy HD1.jpg
- Galaxy.image_scale
- 1.4
- Galaxy.caption
- Three-color image of HD1, the most distant galaxy candidate to date, created using data from the VISTA telescope in Paranal Observatory. The red object in the center of the zoom-in image is HD1.
- Galaxy.constellation name
- Sextans
- Galaxy.epoch
- J2000
- Galaxy.names
- [HIM2022] HD1
via Wikipedia infobox
Article
6 sectionsContents
- Discovery
- Physical properties
- Future considerations
- See also
- References
- External links
HD1 is a proposed high-redshift galaxy, which is considered (as of April 2022) to be one of the earliest and most distant known galaxies yet identified in the observable universe. The galaxy, with an estimated redshift of approximately z = 13.27, is seen as it was about 324 million years after the Big Bang, which was according to scientists around 13.787 billion years ago. It has a light-travel distance (lookback time) of 13.463 billion light-years from Earth, and, due to the expansion of the universe, a present proper distance of 33.288 billion light-years.
According to the latest (2024) spectroscopic studies, HD1 is a passive galaxy with redshift z = 4.0.