Cetus III

Last updated
Cetus lll
Observation data
Constellation Cetus
Right ascension 02h 05m 19.4s
Declination −04° 16′ 12.0″
Distance 818,652 ly
Group or cluster Milky Way subgroup
Characteristics
Type Ultra-faint dwarf
Half-light radius  (physical)90

Cetus lll is an ultra-faint dwarf galaxy (UFD) that is a satellite galaxy to the Milky Way. It is located at a distance of 251 kiloparsecs in the constellation of Cetus. It has a half-light radius of 90 parsecs. [1]

It was identified as a statistically significant overdensity of stars by the Subaru/Hyper Suprime-Cam Survey. Its small size made it invisible to the Sloan Digital Sky Survey. [1]

References

  1. 1 2 Homma, Daisuke; Chiba, Masashi; Okamoto, Sakurako; Komiyama, Yutaka; Tanaka, Masayuki; Tanaka, Mikito; Ishigaki, Miho N.; Hayashi, Kohei; Arimoto, Nobuo; Garmilla, José A.; Lupton, Robert H.; Strauss, Michael A.; Miyazaki, Satoshi; Wang, Shiang-Yu; Murayama, Hitoshi (January 2018). "Searches for new Milky Way satellites from the first two years of data of the Subaru/Hyper Suprime-Cam survey: Discovery of Cetus III". Publications of the Astronomical Society of Japan. 70: S18. arXiv: 1704.05977 . doi:10.1093/pasj/psx050. ISSN   0004-6264.

NAME Cetus III Dwarf Galaxy on SIMBAD, Centre de données astronomiques de Strasbourg.

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