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J/AJ/127/2114         Globular clusters around NGC 1399          (Dirsch+, 2004)

The globular cluster system of NGC 1399. III. VLT spectroscopy and database. Dirsch B., Richtler T., Geisler D., Gebhardt K., Hilker M., Alonso M.V., Forte J.C., Grebel E.K., Infante L., Larsen S., Minniti D., Rejkuba M. <Astron. J., 127, 2114-2132 (2004)> =2004AJ....127.2114D
ADC_Keywords: Galaxies, optical ; Clusters, globular ; Radial velocities Keywords: dark matter - galaxies: elliptical and lenticular, cD - galaxies: halos - galaxies: individual (NGC 1399) - galaxies: kinematics and dynamics - galaxies: star clusters Abstract: Radial velocities of 468 globular clusters around NGC 1399, the central galaxy in the Fornax cluster, have been obtained with FORS2 and the Mask Exchange Unit (MXU) at the ESO Very Large Telescope. This is the largest sample of globular cluster velocities around any galaxy obtained so far. The mean velocity uncertainty is 50km/s. This data sample is accurate and large enough to be used in studies of the mass distribution of NGC 1399 and the properties of its globular cluster system. Here we describe the observations and the reduction procedure, and we discuss the uncertainties of the resulting velocities. The complete sample of cluster velocities that is used in a dynamical study of NGC 1399 is tabulated. A subsample is compared with previously published values. Description: Our candidate GCs have been selected on the basis of new wide-field photometry in Washington C and Kron-Cousins R of the cluster system of NGC 1399, obtained at the Cerro Tololo Inter-American Observatory (CTIO) 4m MOSAIC system. For a description of the photometric observations the reader is referred to Paper I (Dirsch et al., 2003AJ....125.1908D). The observations were performed during the period from 2000 November 30 to December 2 at the European Southern Observatory at Cerro Paranal with the Very Large Telescope facility. The telescope was UT2 (Kueyen) and the instrument the focal reducer FORS2, equipped with the MXU. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 100 502 Globular clusters for which velocities have been determined with lines and/or cross-correlation table4.dat 100 73 Stars in our sample for which velocities have been determined with lines or cross-correlation table5.dat 36 57 Compilation of clusters and stars for which velocities have previously been published in the literature
See also: J/AJ/105/1762 : Globular clusters around NGC 1399 (Ostrov+ 1993) Byte-by-byte Description of file: table3.dat table4.dat
Bytes Format Units Label Explanations
1- 6 A6 --- [DRG2004] Identifier (NN:NNN) (G1) 8 I1 h RAh Hour of right ascension (J2000) 10- 11 I2 min RAm Minute of right ascension (J2000) 13- 17 F5.2 s RAs Second of right ascension (J2000) 19 A1 --- DE- Sign of the declination (J2000) 20- 21 I2 deg DEd Degree of declination (J2000) 23- 24 I2 arcmin DEm Arcminute of declination (J2000) 26- 29 F4.1 arcsec DEs Arcsecond of declination (J2000) 31- 34 F4.2 mag C-Rc ? Washington C minus Kron-Cousins R-band colors 36- 39 F4.2 mag e_C-Rc ? Uncertainty in C-Rc (2) 41- 45 F5.2 mag Rcmag ? The Kron-Cousins R-band magnitude 47- 50 F4.2 mag e_Rcmag ? Uncertainty in Rcmag (2) 52- 55 I4 km/s CVel ? Correlation measurement velocity 57- 59 I3 km/s e_CVel ? Uncertainty in CVel 61- 64 I4 km/s LVel ? Direct line measurement velocity 66- 67 I2 km/s e_LVel ? Uncertainty in LVel 69-100 A32 --- Com Additional comments (3)
Note (2): The uncertainties do not include the photometric calibration errors, which are 0.03 in C-T1 and 0.02 in T1. Note (3): An identifier for a different cluster indicates that this cluster has been observed independently on two masks and can be identified via its number on the other mask. In this case the velocity is the mean value from the two masks.
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 6 A6 --- [DRG2004] Identifier (NN:NNN) (G1) 10- 13 I4 km/s CVel1 This paper correlation measurement velocity 15- 16 I2 km/s e_CVel1 rms uncertainty on CVel1 18- 21 I4 km/s CVel2 Other correlation measurement velocity 23- 25 I3 km/s e_CVel2 rms uncertainty on CVel2 27- 36 A10 --- Oname Other name (1)
Note (1): The denomination references are as follows: Keck = Kissler-Patig et al., 1998AJ....115..105K ([KBS98] NN in Simbad) NTT = Minniti et al., 1998AJ....115..121M ([MKG98] NNN in Simbad) AAT = Grillmair et al., 1994ApJ...422L...9G ([KGM99] aat NN in Simbad) 2dF = Drinkwater et al., 2001, AAO Newsl., 97, 9
Global notes: Note (G1): We used an identifier consisting of two two-digit numbers, the first indicating the mask and the second the aperture number on the mask that was assigned during the extraction process.
History: From electronic version of the journal References: Dirsch et al., Paper I 2003AJ....125.1908D Richtler et al., Paper II 2004AJ....127.2094R
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 08-Jul-2004
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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