Hydra II: a faint and compact milky way dwarf galaxy found in the survey of the magellanic stellar history

  title={Hydra II: a faint and compact milky way dwarf galaxy found in the survey of the magellanic stellar history},
  author={Nicolas F. Martin and David L. Nidever and Gurtina Besla and Knut A. G. Olsen and Alistair R. Walker and Anna Katherina Vivas and Robert A. Gruendl and Catherine C. Kaleida and Ricardo R. Mu{\~n}oz and Robert D. Blum and Abhijit Kumar Saha and Blair C. Conn and Eric F. Bell and You-Hua Chu and Maria-Rosa L. Cioni and T.J.L. de Boer and Carme Gallart and Shoko Jin and Andrea M. Kunder and Steven R. Majewski and David Martinez-Delgado and Antonela Monachesi and Matteo Monelli and Lara Monteagudo and Noelia E. D. Noel and Edward W Olszewski and Guy S. Stringfellow and Roeland P. van der Marel and D. Zaritsky},
  journal={The Astrophysical Journal},
© 2015. The American Astronomical Society. All rights reserved.We present the discovery of a new dwarf galaxy, Hydra II, found serendipitously within the data from the ongoing Survey of the Magellanic Stellar History conducted with the Dark Energy Camera on the Blanco 4 m Telescope. The new satellite is compact (r h = 68 ± 11 pc) and faint (M V = -4.8 ± 0.3), but well within the realm of dwarf galaxies. The stellar distribution of Hydra II in the color-magnitude diagram is well-described by a… 

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