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AGC 198691






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From Wikipedia, the free encyclopedia
  

AGC 198691
Observation data (J2000 epoch)
ConstellationLeo Minor
Right ascension09h43m 32.43s
Declination+33° 26′ 58″
Distance41.4+5.5
−11.1 Mly (12.7+1.7
−3.4 Mpc)[1]
Characteristics
TypedG
Mass10×106 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]
  1. ^ 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.


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