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J/ApJ/663/960       Radial velocities of Leo I stars         (Sohn+, 2007)

Exploring halo substructure with giant stars. X. Extended dark matter or tidal disruption?: the case for the Leo I dwarf spheroidal galaxy. Sohn S.T., Majewski S.R., Munoz R.R., Kunkel W.E., Johnston K.V., Ostheimer J.C., Guhathakurta P., Patterson R.J., Siegel M.H., Cooper M.C. <Astrophys. J., 663, 960-989 (2007)> =2007ApJ...663..960S
ADC_Keywords: Galaxies, nearby ; Radial velocities ; Photometry Keywords: galaxies: evolution - galaxies: halos - galaxies: individual (Leo I) - galaxies: interactions - galaxies: photometry - galaxies: structure Abstract: We present a wide-field (4.5deg2) photometric and spectroscopic survey of the Leo I dwarf spheroidal (dSph) galaxy to explore its extended morphology and dynamics. To select Leo I red giant branch star candidates we exploit M, T2, and DDO51 filter photometry; this yields 100% pure Leo I stars among more than 100 M<21.5 Leo I giant candidates having previous or new Keck spectroscopy. Description: The images used in this study were obtained with the Mayall 4m Telescope at Kitt Peak National Observatory (KPNO) during the nights of UT 1998 November 17 and 2002 May 2-5. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 81 125 Observed Radial Velocities of Stars
See also: J/AJ/125/1352 : Ursa Minor dSph M,T2, DDO51 photometry (Palma+, 2003) J/AJ/130/2677 : Stars in the Carina dSph galaxy field (Majewski+, 2005) J/ApJ/649/201 : Velocities & Washington photometry in Carina dSph (Munoz+ 2006) Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 6 A6 --- Slit Slit identification 8- 12 I5 --- [SMM2007] Source identification number 14 A1 --- n_[SMM2007] [f] 4" slit (1) 16- 17 I2 h RAh Hour of Right Ascension (J2000) 19- 20 I2 min RAm Minute of Right Ascension (J2000) 22- 26 F5.2 s RAs Second of Right Ascension (J2000) 28 A1 --- DE- Sign of the Declination (J2000) 29- 30 I2 deg DEd Degree of Declination (J2000) 32- 33 I2 arcmin DEm Arcminute of Declination (J2000) 35- 38 F4.1 arcsec DEs Arcsecond of Declination (J2000) 40- 44 F5.2 mag M0mag Extinction corrected M-band (Washington) magnitude 46- 49 F4.2 mag M-T2 Reddening corrected (M-T2) color index 51- 55 F5.2 mag M-D51 Reddening corrected (M-D51) color index 57- 61 F5.1 km/s HRV Heliocentric radial velocity (2) 63- 68 F6.1 km/s Vgsr Galactocentric standard of rest radial velocity (3) 70- 74 F5.1 km/s TOff Telluric offset (4) 76- 79 F4.2 --- CCP Cross-correlation peak 81 I1 --- Q Quality indicator (5)
Note (1): f = Alignment stars observed with 4" wide slits. All other stars were observed with 1" wide slits. Note (2): Corrected for the Telluric offsets as described in text. Note (3): We convert to Galactocentric standard of rest by assuming a local standard of rest velocity of 220km/s and a solar peculiar velocity of (u,v,w)=(-9,12,7)km/s Note (4): The wavelength ranges on which the telluric offset determination is based are 6866-6912Å (the Fraunhofer B band), 7167-7320Å, 7593-7690Å (the Fraunhofer A band), 8110-8320Å, and 8925-9120Å, but all telluric features weaker than 20% were not used. See text for more explanations. Note (5): See Majewski et al. (2004AJ....128..245M) and Kunkel et al. (1997A&AS..122..463K) for descriptions on how Q-values are assigned.
History: From electronic version of the journal References: Majewski et al., Paper I 2000AJ....120.2550M Majewski et al., Paper II 2000AJ....119..760M Kundu et al., Paper III 2002ApJ...576L.125K Palma et al., Paper IV 2003AJ....125.1352P, Cat. J/AJ/125/1352 Crane et al. 2003ApJ...594L.119C Rocha-Pinto et al. 2004ApJ...615..732R Majewski et al., Paper VI 2005AJ....130.2677M, Cat. J/AJ/130/2677 Munoz et al. 2005ApJ...631L.137M Westfall et al., Paper VIII 2006AJ....131..375W Munoz et al. 2006ApJ...650L..51M Sohn et al., Paper X 2007ApJ...663..960S, Cat. J/ApJ/663/960 Munoz et al., Paper XI 2006ApJ...649..201M, Cat. J/ApJ/649/201 Majewski et al. 2012ApJ...747L..37M Sheffield et al., Paper XIV 2014ApJ...793...62S, Cat. J/ApJ/793/62
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 15-Aug-2009
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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