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J/MNRAS/330/792 Radial velocity in Draco (Kleyna+, 2002)
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Beginning of ReadMe :J/MNRAS/330/792 Radial velocity in Draco (Kleyna+, 2002)
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Dark matter in dwarf spheroidals - II. Observations and modelling of Draco.
Kleyna J., Wilkinson M.I., Evans N.W., Gilmore G., Frayn C.
<Mon. Not. R. Astron. Soc. 330, 792 (2002)>
=2002MNRAS.330..792K
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ADC_Keywords: Galaxies, photometry ; Radial velocities
Keywords: stellar dynamics - galaxies: individual: Draco -
galaxies: kinematics and dynamics - Local Group - dark matter
Abstract:
We present stellar radial velocity data for the Draco dwarf spheroidal
(dSph) galaxy obtained using the AF2/WYFFOS instrument combination on
the William Herschel Telescope. Our data set consists of 186 member
stars, 159 of which have good quality velocities, extending to a
magnitude V 19.5 with a mean velocity precision of 2km/s. As this
survey is based on a high-precision photometric target list, it
contains many more Draco members at large radii. For the first time,
this allows a robust determination of the radial behaviour of the
velocity dispersion in a dSph.