Haro 2
| Haro 2 | |
|---|---|
Blue compact dwarf | |
| Other designations | |
| UGC 5720, Arp 233, MRK 33, MCG +09-17-070, PGC 31141[1] |
Haro 2 is a
light years away from Earth based on redshift independent measurements, which means, given its apparent dimensions, that Haro 2 is approximately 45,000 light years across, while redshift indicates a distance of 70 million light years.[1]
Wolf-Rayet stars.[3] The age of the current starburst activity is calculated to be 5.8 ± 1.0 million years.[4]
An outflow of ionised gas around the central
galactic wind created by the starburst activity in the centre of the galaxy. The galaxy has been found to emit Lyman-alpha both from the central HII region and the shell.[5] The expanding shell has also been observed in X-rays with ROSAT, indicating it forms a superbubble.[4] Imaging of CO(2–1) indicates that the shell has entrained molecular gas.[6] The kinematics of the shell suggest that it has an age of 5 to 6 million years.[7]
See also
- NGC 3353 - a similar dwarf galaxy
References
- ^ a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for UGC 5720. Retrieved 2024-03-26.
- doi:10.1086/107409.
- ISSN 0004-6361.
- ^ .
- ISSN 0004-6361.
- .
- Bibcode:1997A&A...326..929L.
External links
- Haro 2 on
