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J/AJ/140/1337       RV of 111 Galactic halo stars in Virgo   (Brink+, 2010)

Radial velocities of Galactic halo stars in Virgo. Brink T.G., Mateo M., Martinez-delgado D. <Astron. J., 140, 1337-1346 (2010)> =2010AJ....140.1337B
ADC_Keywords: Milky Way ; Stars, pre-main sequence ; Photometry, SDSS ; Radial velocities Keywords: galaxies: individual (Sagittarius) - Galaxy: halo - Galaxy: kinematics and dynamics - Galaxy: structure - Local Group - techniques: radial velocities Abstract: We present multi-slit radial velocity measurements for 111 stars in the direction of the Virgo Stellar Stream (VSS). The stars were photometrically selected to be probable main-sequence stars in the Galactic halo. When compared with the radial velocity distribution expected for the halo of the Milky Way, as well as the distribution seen in a control field, we observe a significant excess of negative velocity stars in the field, which can likely be attributed to the presence of a stellar stream. Description: Images were obtained by one of us (D. M.-D.) with the Wide Field Camera (WFC) on the 2.5m Isaac Newton Telescope in 2004 May and 2000 June, respectively. All spectra were obtained using multi-slit masks fabricated for use with the Inamori-Magellan Areal Camera and Spectrograph (IMACS) with the f/4.3 camera, on the 6.5m Baade telescope at Las Campanas Observatory. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 69 112 Virgo field table2.dat 69 60 Control field
See also: J/ApJ/691/306 : RR Lyrae candidates in Virgo stream photometry (Prior+, 2009) Byte-by-byte Description of file: table[12].dat
Bytes Format Units Label Explanations
1- 6 I6 --- ID Identification number, [BMM2010] NNNNNN 8- 15 A8 --- Field Field identification (1) 17- 21 F5.2 mag gmag SDSS g band magnitude; dereddened 23- 27 F5.2 mag rmag SDSS r band magnitude; dereddened 29- 30 I2 h RAh Hour of Right Ascension (J2000) 32- 33 I2 min RAm Minute of Right Ascension (J2000) 35- 39 F5.2 s RAs Second of Right Ascension (J2000) 41 A1 --- DE- Sign of the Declination (J2000) 42- 43 I2 deg DEd Degree of Declination (J2000) 45- 46 I2 arcmin DEm Arcminute of Declination (J2000) 48- 51 F4.1 arcsec DEs Arcsecond of Declination (J2000) 53- 58 F6.1 km/s Vgsr Galactic Standard of Rest velocity (corrected of the Galactic rotation) 60- 63 F4.1 km/s e_Vgsr Velocity dispersion 65- 69 F5.2 --- RTD Tonry-Davis R value
Note (1): Virgo fields are virgo1_1, virgo1_2 and virgo1_3. Control fields are vircont1 and vircont2.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 07-Jul-2012
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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