AGC 198691

AGC 198691
Observation data (J2000 epoch)
Constellation	Leo Minor
Right ascension	09h 43m 32.43s
Declination	+33° 26′ 58″
Distance	3.7×108 ± 1.5×108 ly (1.13×108 ± 4.6×107 pc)
Characteristics
Type	dG
Mass	10×106 M☉
Apparent size (V)	3 × 4 arcsec
Other designations
	Leoncino

AGC 198691 is a small galaxy with the smallest known metallicity. It has a nickname of Leoncino as it is near Leo Minor.[1] The galaxy appears blue due to the presence of several bright blue stars. There is also an HII region present that contains oxygen.[2] It is important as an indicator of the kind of galaxies first formed in the Universe.[3]

References

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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[1] Aron, Jacob (21 May 2016). "The galaxy that time forgot". New Scientist. 230 (3074): 12.

[2] Nowakowski, Tomasz (16 March 2016). "Astronomers discover the most metal-poor galaxy in the local universe". phys.org. Retrieved 8 June 2016.

[3] 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.