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J/ApJ/591/850     Radial velocities of M49 globular clusters     (Cote+, 2003)

Dynamics of the globular cluster system associated with M49 (NGC 4472): cluster orbital properties and the distribution of dark matter. Cote P., McLaughlin D.E., Cohen J.G., Blakeslee J.P. <Astrophys. J. 591, 850 (2003)> =2003ApJ...591..850C
ADC_Keywords: Clusters, globular ; Radial velocities Keywords: galaxies: clusters: individual (Virgo) - galaxies: halos - galaxies: individual (M49, NGC 4472) - galaxies: kinematics and dynamics - galaxies: star clusters - globular clusters: general Abstract: Using the Low Resolution Imaging Spectrometer on the Keck I and II telescopes, we have measured radial velocities for 196 globular clusters (GCs) around M49 (NGC 4472), the brightest member of the Virgo Cluster. Combined with published data, they bring the total number of GCs with measured radial velocities in this galaxy to 263. In terms of sample size, spatial coverage, velocity precision, and the availability of metallicity estimates from Washington photometry, this radial velocity database resembles that presented recently for M87 (NGC 4486), Virgo's cD galaxy and its second-ranked member. We extract the projected kinematics of the full sample of GCs and of separate subsamples of 158 metal-poor and 105 metal-rich GCs. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 87 345 Radial velocities for confirmed and candidate M49 globular clusters
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 4 A4 --- Class Object classification (1) 7- 10 I4 --- [GLK96] Object identification (2) 12- 13 I2 h RAh Hour of Right Ascension (J2000) (2) 15- 16 I2 min RAm Minute of Right Ascension (J2000) (2) 18- 22 F5.2 s RAs Second of Right Ascension (J2000) (2) 23 A1 --- DE- sign of Declination (J2000) (2) 24 I1 deg DEd Degree of Declination (J2000) (2) 26- 27 I2 arcmin DEm Arcminute of Declination (J2000) (2) 29- 32 F4.1 arcsec DEs Arcsecond of Declination (J2000) (2) 34- 38 F5.1 arcsec Rad Distance from the center of M49 (3) 40- 44 F5.1 deg PA Position angle in degrees East of North (3) 46- 50 F5.2 mag T1mag The T1 band magnitude 52- 55 F4.2 mag C-T1 The (C-T1) color index 57- 61 F5.2 [---] [Fe/H] ? Metallicity (4) 63- 66 F4.2 [---] e_[Fe/H] ? Uncertainty in [Fe/H] 68- 72 I5 km/s RV Radial velocity measurement 74- 76 I3 km/s e_RV Uncertainty in RVel 78 A1 --- r_RV Source for RV (5) 80- 83 I4 km/s RVwm Weighted mean radial velocity 85- 87 I3 km/s e_RVwm Uncertainty in RVwm
Note (1): Classes as follows: GC = Globular clusters FSBG = Foreground Stars and Background Galaxies DO = Discrepant Objects Discrepant Objects are omitted from final GC sample. Note (2): From Geisler et al. (1996AJ....111..480G). Note (3): From Geisler et al. (1996AJ....111..480G). In calculating Rad and PA, we take the center of M49 to be RA=12:29:47.5, DE=+08:00:10.5, J2000, following Sharples et al. (1998AJ....115.2337S). Note (4): Based on the color-metallicity relation of Geisler & Forte (1990ApJ...350L...5G). Note (5): Sources for radial velocity as follows: M = Mould et al. (1990AJ.....99.1823M) S = Sharples et al. (1998AJ....115.2337S) Z = Zepf et al (2000AJ....120.2928Z) 1-4 = as given in Table 1 (Observing Log): --------------------------------------------------------------- Run Date Grating Lambdac Lambdac/DLambdac (Å) --------------------------------------------------------------- 1 1998 Apr 16-17 600/5000 5200 870 2 1999 Mar 24 600/7500 8550 1425 3 1999 Apr 6 600/7500 8550 1425 4 2000 Apr 30 600/5000 4860 870 ---------------------------------------------------------------
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 26-Sep-2003
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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