HOROLOGIUM II: A SECOND ULTRA-FAINT MILKY WAY SATELLITE IN THE HOROLOGIUM CONSTELLATION

@article{Kim2015HOROLOGIUMIA,
  title={HOROLOGIUM II: A SECOND ULTRA-FAINT MILKY WAY SATELLITE IN THE HOROLOGIUM CONSTELLATION},
  author={Dongwon Kim and H. Jerjen},
  journal={The Astrophysical Journal},
  year={2015},
  volume={808}
}
  • Dongwon Kim, H. Jerjen
  • Published 2015
  • Physics
  • The Astrophysical Journal
  • We report the discovery of a new ultra-faint Milky Way satellite candidate, Horologium II (Hor II), detected in the Dark Energy Survey Y1A1 public data. Hor II features a half-light radius of pc and a total luminosity of that place it in the realm of ultra-faint dwarf galaxies on the size–luminosity plane. The stellar population of the new satellite is consistent with an old (∼13.5 Gyr) and metal-poor ([Fe/H] ) isochrone at a distance modulus of , or a heliocentric distance of 78 ± 8 kpc, in… CONTINUE READING

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