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J/ApJ/658/980  New velocities for 62 globular clusters in M104  (Bridges+, 2007)

Spectroscopy of globular clusters out to large radius in the Sombrero galaxy. Bridges T.J., Rhode K.L., Zepf S.E., Freeman K.C. <Astrophys. J., 658, 980-992 (2007)> =2007ApJ...658..980B
ADC_Keywords: Clusters, globular ; Radial velocities ; Photometry Keywords: galaxies: formation - galaxies: kinematics and dynamics - galaxies: star clusters Abstract: We present new velocities for 62 globular clusters in M104 (NGC 4594, the Sombrero Galaxy), 56 from 2dF on the AAT and 6 from Hydra on WIYN. Combined with previous data, we have a total sample of 108 M104 globular cluster velocities, extending to 20' radius (∼60kpc), along with BVR photometry for each of these. We use this wide-field data set to study the globular cluster kinematics and dark matter content of M104 out to 10' radius (30kpc). Description: To create a list of targets for this study, we began with a preliminary list of GC candidates produced from BVR images of M104 taken with the Mosaic Imager on the Kitt Peak National Observatory (KPNO) 4m Mayall Telescope. The final results from the 4m Mosaic survey of M104's GC system are published in Rhode & Zepf (2004AJ....127..302R). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 90 108 Spectroscopically Confirmed M104 Globular Clusters table3.dat 55 108 Foreground Stars from 2dF and WIYN/Hydra Spectroscopy table5.dat 39 706 Enclosed luminosity, mass, and mass-to-light ratio versus deprojected radius for M104
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 4 I4 --- RZ ? Rhode & Zepf (2004AJ....127..302R) ID where available, [RZ2004] GCl NNNN in Simbad 6- 10 A5 --- OID Other identification (1) 12- 13 I2 h RAh Hour of Right Ascension (J2000) 15- 16 I2 min RAm Minute of Right Ascension (J2000) 18- 22 F5.2 s RAs Second of Right Ascension (J2000) 24 A1 --- DE- Sign of the Declination (J2000) 25- 26 I2 deg DEd Degree of Declination (J2000) 28- 29 I2 arcmin DEm Arcminute of Declination (J2000) 31- 34 F4.1 arcsec DEs Arcsecond of Declination (J2000) 36- 39 I4 km/s RV Radial velocity 41- 43 I3 km/s e_RV Error in RV 45- 50 F6.2 arcmin x Position along major axis 52- 57 F6.2 arcmin y Position along minor axis 59- 63 F5.2 arcmin r Galactocentric radius (r*r = x*x + y*y) 65- 70 F6.2 deg theta Azimuthal angle 72- 76 F5.2 mag Vmag The V band magnitude 78- 82 F5.3 mag B-V The (B-V) color index 84- 88 F5.3 mag V-R The (V-R) color index 90 I1 --- Ref [1/4] Source flag (2)
Note (1): Other identifications, when applicable, as: N-NN = from Bridges et al. (1997MNRAS.284..376B), [BAZ97] N-NN C-NNN = from Larsen et al. (2002AJ....124..828L), [LFB2001] C-NNN H2-NN = from Larsen et al. (2002AJ....124..828L), [LFB2001] H2-NN Note (2): Source flag as follows: 1 = 2dF 2 = WHT 3 = Keck 4 = WIYN
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 4 I4 --- RZ ? Rhode & Zepf (2004AJ....127..302R) ID where available, [RZ2004] Star NNNN in Simbad (1) 6- 7 I2 h RAh Hour of Right Ascension (J2000) 9- 10 I2 min RAm Minute of Right Ascension (J2000) 12- 16 F5.2 s RAs Second of Right Ascension (J2000) 18 A1 --- DE- Sign of the Declination (J2000) 19- 20 I2 deg DEd Degree of Declination (J2000) 22- 23 I2 arcmin DEm Arcminute of Declination (J2000) 25- 28 F4.1 arcsec DEs Arcsecond of Declination (J2000) 30- 33 I4 km/s RV Radial velocity 35- 37 I3 km/s e_RV Error in RV 39- 43 F5.2 mag Vmag KPNO Harris V band magnitude 45- 49 F5.3 mag B-V KPNO Harris (B-V) color index 51- 55 F5.3 mag V-R KPNO Harris (V-R) color index
Note (1): One object (RZ# 2458) was observed with WIYN/Hydra; all others are from the 2dF data.
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 6 F6.3 arcmin r Radius from galaxy center 8- 13 F6.3 solLum LV Enclosed luminosity 15- 20 F6.3 solLum e_LV Lower 1σ confidence limit on LV 22- 27 F6.3 solLum E_LV Upper 1σ confidence limit on LV 29- 33 F5.2 solMass/solLum (M/L)l Lower 1σ V band mass-to-light ratio confidence limit 35- 39 F5.2 solMass/solLum (M/L)h Upper 1σ V band mass-to-light ratio confidence limit
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 23-Jan-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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