AGC 198691 | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Leo Minor |
Right ascension | 09h 43m 32.43s |
Declination | +33° 26′ 58″ |
Distance | 41.4+5.5 −11.1 Mly (12.7+1.7 −3.4 Mpc)[1] |
Characteristics | |
Type | dG |
Mass | 10×106 M☉ |
Apparent size (V) | 3 × 4 arcsec |
Other designations | |
Leoncino |
AGC 198691 is a small galaxy with one of the smallest known metallicities.[1] It has a nickname of Leoncino as it is near Leo Minor.[2] The galaxy appears blue due to the presence of several bright blue stars. There is also an HII region present that contains oxygen.[3] It is important as an indicator of the kind of galaxies first formed in the Universe.[4]
References
[edit]- ^ a b Aver, Erik; Berg, Danielle A.; Hirschauer, Alec S.; Olive, Keith A.; Pogge, Richard W.; Rogers, Noah S J.; Salzer, John J.; Skillman, Evan D. (2021). "A comprehensive chemical abundance analysis of the extremely metal poor Leoncino Dwarf galaxy (AGC 198691)". Monthly Notices of the Royal Astronomical Society. 510: 373–382. arXiv:2109.00178. doi:10.1093/mnras/stab3226.
- ^ Aron, Jacob (21 May 2016). "The galaxy that time forgot". New Scientist. 230 (3074): 12.
- ^ Nowakowski, Tomasz (16 March 2016). "Astronomers discover the most metal-poor galaxy in the local universe". phys.org. Retrieved 8 June 2016.
- ^ Hirschauer, Alec S.; Salzer, John Joseph; Cannon, John M.; Skillman, Evan D. (1 January 2016). "The Extremely Metal-Poor Dwarf Galaxy AGC 198691". American Astronomical Society. 227: 136.06. Bibcode:2016AAS...22713606H.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction