M85-HCC1

M85-HCC1 is an ultracompact dwarf galaxy with a star density 1,000,000 times that of the solar neighbourhood,^[1]^[2] lying near the galaxy Messier 85. As of 2015, it is the densest galaxy known.^[3]

References

↑ "Hiding in plain sight: Undergraduates discover the densest galaxies known". physOrg. 27 July 2015. Retrieved 29 July 2015.
↑ Michael A. Sandoval, Richard P. Vo, Aaron J. Romanowsky (2015). "Hiding in plain sight: record-breaking compact stellar systems in the Sloan Digital Sky Survey". Astrophysical Journal Letters. 808: L32. arXiv:1506.08828. Bibcode:2015ApJ...808L..32S. doi:10.1088/2041-8205/808/1/l32.
↑ "Undergraduates discover the densest galaxies known". Space Daily. 29 July 2015.

Galaxies

Morphology	Disc galaxy Lenticular galaxy barred unbarred Spiral galaxy Anemic galaxy barred flocculent grand design intermediate Magellanic unbarred Dwarf galaxy elliptical irregular spheroidal spiral Elliptical galaxy cD-galaxy Irregular galaxy barred Peculiar galaxy Ring galaxy Polar

Structure	Bar Bulge Dark matter halo Disc Galactic halo corona Galactic plane Interstellar medium Protogalaxy Spiral arm Supermassive black hole

Active nuclei	Blazar LINER Markarian galaxies Quasar Radio galaxy X-shaped Relativistic jet Seyfert galaxy

Energetic galaxies	LAE LIRG Starburst galaxy BCD Pea Hot, dust-obscured galaxies (Hot DOGs)

Low activity	LSB UDG

Interaction	Field galaxy Galactic tide Galaxy cloud Galaxy groups and clusters Galaxy group Galaxy cluster Brightest cluster galaxy Fossil galaxy group Interacting galaxy merger Jellyfish galaxy Satellite galaxy Stellar stream Superclusters Walls Void galaxy Voids and supervoids

Lists	Galaxies Galaxies named after people Largest Nearest Polar-ring galaxies Ring galaxies Spiral galaxies Groups and clusters Large quasar groups Quasars Superclusters Voids

See also	Dark galaxy Extragalactic astronomy Faint blue galaxy Galactic astronomy Galactic center Galactic coordinate system Galactic empire Galactic habitable zone Galactic magnetic fields Galactic orientation Galactic quadrant Galactic ridge Galaxy color–magnitude diagram Galaxy formation and evolution Galaxy rotation curve Illustris project Intergalactic dust Intergalactic stars Intergalactic travel Population III stars Cosmos Redshift 7 galaxy

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M85-HCC1

References

See also