The SLUGGS survey: the mass distribution in early-type galaxies within five effective radii and beyond

Adebusola B. Alabi,Duncan A. Forbes,Aaron J. Romanowsky,Jean P. Brodie,Jay Strader,Joachim Janz,Vincenzo Pota,Nicola Pastorello,Christopher Usher,Lee R. Spitler,Caroline Foster,Zachary G. Jennings,Alexa Villaume,Sreeja S. Kartha

Monthly Notices of the Royal Astronomical Society（2016）

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摘要

We study mass distributions within and beyond 5 effective radii (Re) in 23 early-type galaxies from the SAGES Legacy Unifying Globulars and Galaxies Survey, using their globular cluster (GC) kinematic data. The data are obtained with Keck/DEep Imaging Multi-Object Spectrograph, and consist of line-of-sight velocities for ∼3500 GCs, measured with a high precision of ∼15 km s−1 per GC and extending ...

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关键词

globular clusters: general,galaxies: evolution,galaxies: kinematics and dynamics

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