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AGC 198691

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Galaxy in the constellation Leo Minor
AGC 198691
Observation data (J2000 epoch)
ConstellationLeo Minor
Right ascension09 43 32.43
Declination+33° 26′ 58″
Distance41.4+5.5
−11.1 Mly (12.7+1.7
−3.4 Mpc)
Characteristics
TypedG
Mass10×10 M☉
Apparent size (V)3 × 4 arcsec
Other designations
Leoncino

AGC 198691 is a small galaxy with one of the smallest known metallicities. It has a nickname of Leoncino as it is near Leo Minor. The galaxy appears blue due to the presence of several bright blue stars. There is also an HII region present that contains oxygen. It is important as an indicator of the kind of galaxies first formed in the Universe.

References

  1. ^ 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.
  2. Aron, Jacob (21 May 2016). "The galaxy that time forgot". New Scientist. 230 (3074): 12.
  3. Nowakowski, Tomasz (16 March 2016). "Astronomers discover the most metal-poor galaxy in the local universe". phys.org. Retrieved 8 June 2016.
  4. 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.
Constellation of Leo Minor
Stars
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Flamsteed
Variable
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