How elevated is the dynamical-to-stellar mass ratio of the ultra-compact dwarf S999?

Here we present new Keck ESI high-resolution spectroscopy and deep archival HST/ACS imaging for S999, an ultra-compact dwarf in the vicinity of M87, which was claimed to have an extremely high dynamical-to-stellar mass ratio. Our data increase the total integration times by a factor of 5 and 60 for...

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Veröffentlicht in:	arXiv.org 2015-02
Hauptverfasser:	Janz, Joachim, bes, Duncan A, Norris, Mark A, Strader, Jay, Penny, Samantha J, Fagioli, Martina, Romanowsky, Aaron J
Format:	Artikel
Sprache:	eng
Schlagworte:	Galaxies Initial mass function Kinematics Luminosity Parameters Physics - Astrophysics of Galaxies Spectroscopy Spectrum analysis Star & galaxy formation Stellar age Stellar mass Stripping Surface brightness
Online-Zugang:	Volltext
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