J/MNRAS/330/792 Radial velocity in Draco (Kleyna+, 2002)
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 2002MNRAS.330..792K
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.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 59 159 Observed member stars
table2.dat 59 27 Probable member stars
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See also:
J/AJ/110/2131 : M/L for Draco and UMi. I. (Armandroff+ 1995)
J/A+A/364/712 : BV photometry in Draco molecular cloud (Penprase+, 2000)
J/AJ/121/841 : RV photometry of Draco dwarf spheroidal galaxy (Piatek+, 2001)
J/AJ/123/2511 : RV photometry of Draco dwarf spheroidal galaxy (Piatek+, 2002)
Byte-by-byte Description of file: table1.dat table2.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [KWE2002] Sequential number
5- 11 A7 --- AOP Designation of the object in the previous data
set of AOP (1)
13- 17 F5.2 mag Vmag V magnitude
19- 20 I2 h RAh Right ascension (J2000)
22- 23 I2 min RAm Right ascension (J2000)
25- 29 F5.2 s RAs Right ascension (J2000)
31 A1 --- DE- Declination sign (J2000)
32- 33 I2 deg DEd Declination (J2000)
35- 36 I2 arcmin DEm Declination (J2000)
38- 41 F4.1 arcsec DEs Declination (J2000)
43- 49 F7.2 km/s HRV Heliocentric radial velocity
51- 54 F4.2 km/s e_HRV rms uncertainty on HRV
56- 59 F4.1 --- RTD Tonry & Davis (1979AJ.....84.1511T 1979AJ.....84.1511T) R value of
the cross-correlation function
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Note (1): Identifications:
(table1.dat) From Olszewski et al., 1995AJ....110.2120O 1995AJ....110.2120O &
Armandroff et al., 1995, Cat. J/AJ/110/2131
NNNNN: Irwin Dra NNNNN in Simbad,
XI-NN: McClure XI-NN in Simbad,
A: Stetson A in Simbad
(table2.dat) From Baade & Swope, 1961AJ.....66..300B 1961AJ.....66..300B
NNN: BASV NNN in Simbad
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History:
From electronic version of the journal
References:
Wilkinson et al., Paper I 2002MNRAS.330..778W 2002MNRAS.330..778W
(End) James Marcout, Patricia Bauer [CDS] 12-Apr-2002