KKs 3 explained

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 about 7 million light years away from Earth. It is categorised as a dwarf spheroidal dSph galaxy.^[5] The mass of KKs 3 is 2.3 × 10⁷ (23 million times the mass of the Sun) with a blue absolute magnitude of −10.8.^[6] Three-quarters of its stars are over 12 billion years old.^[6] Coordinates are R.A. = 02h 24m 44.4s, Dec. = −73°30′51".^[6]

It was discovered in December 2014 as a result of the image taken in August by the Hubble telescope.^[7]

Notes and References

1. 10.1007/s10511-018-9548-3 . Gradients of Metallicity and Age of Stars in the Dwarf Spheroidal Galaxies KKS 3 and ESO 269-66 . 2018 . Sharina . M. E. . Makarova . L. N. . Makarov . D. I. . Astrophysics . 61 . 4 . 435–443 . 2311.05990 . 2018Ap.....61..435S .
2. 2017MNRAS.471.1955S. 10.1093/mnras/stx1605. 1706.07344. 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. 2017. Sharina. M. E. Shimansky. V. V. Kniazev. A. Y. free .
3. Web site: SIMBAD. LEDA 9140 – Galaxy. 2014-12-25.
4. Web site: NASA/IPAC Extragalactic Database. Object No. 1 – SGC 0224.3-7345. 2014-12-25.
5. Web site: The Milky Way's new neighbour. Massey. Robert. 22 December 2014. 23 December 2014.
6. A new isolated dSph galaxy near the Local Group . 4 . I. D. Karachentsev . L. N. Makarova . D. I. Makarov. R. B. Tully . L. Rizzi . 1411.1674 . 2015MNRAS.447L..85K . 10.1093/mnrasl/slu181 . Monthly Notices of the Royal Astronomical Society Letters . 11 February 2015 . 447 . 1 . L85–L89 . 6 November 2014 . free .
7. Web site: Hubble telescope spots our galaxy's newest neighbor. Yeager. Ashley. 22 December 2014. 23 December 2014.