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KKs 3

Summary

KKs 3 is a dwarf galaxy in the Local Group. It is unusual because it is gas poor and very isolated in the halo of the local group. KKs 3 is 7 million light years away from Earth. It is categorised as a dwarf spheroidal dSph galaxy.[3] The mass of KKs 3 is 2.3 × 107M☉ (23 million times the mass of the Sun) with a blue absolute magnitude of −10.8.[1] Three-quarters of its stars are over 12 billion years old.[1] Coordinates are R.A. = 02h 24m 44.4s, Dec. = −73°30′51".[1]

KKs 3
KKs 3 is the dark patch in the centre of this Hubble Space Telescope image
Observation data (J2000 epoch)
ConstellationHydrus
Right ascension02h 24m 44.4s[1]
Declination−73° 30′ 51″[1]
Apparent magnitude (V)14.47[2]
Characteristics
TypedSph[3]
Other designations
LEDA 9140,[4] PGC 9140,[5] SGC 022423-7344.3,[4] SGC 0224.3-7345,[5] KKs 3

It was discovered in December 2014 as a result of the image taken in August by the Hubble telescope.[6]

References edit

  1. ^ a b c d e I. D. Karachentsev; L. N. Makarova; D. I. Makarov; R. B. Tully; et al. (6 November 2014). "A new isolated dSph galaxy near the Local Group". Monthly Notices of the Royal Astronomical Society Letters. 447 (1) (published 11 February 2015): L85–L89. arXiv:1411.1674. Bibcode:2015MNRAS.447L..85K. doi:10.1093/mnrasl/slu181.
  2. ^ Sharina, M. E; Shimansky, V. V; Kniazev, A. Y (2017). "Nuclei of dwarf spheroidal galaxies KKs 3 and ESO 269−66 and their counterparts in our Galaxy". Monthly Notices of the Royal Astronomical Society. 471 (2): 1955. arXiv:1706.07344. Bibcode:2017MNRAS.471.1955S. doi:10.1093/mnras/stx1605.
  3. ^ a b Massey, Robert (22 December 2014). "The Milky Way's new neighbour". Retrieved 23 December 2014.
  4. ^ a b "LEDA 9140 – Galaxy". SIMBAD. Retrieved 25 December 2014.
  5. ^ a b "Object No. 1 – SGC 0224.3-7345". NASA/IPAC Extragalactic Database. Retrieved 25 December 2014.
  6. ^ Yeager, Ashley (22 December 2014). "Hubble telescope spots our galaxy's newest neighbor". Retrieved 23 December 2014.