J/ApJ/674/857 Radial velocities and CT1 magnitudes in M60 galaxy (Lee+, 2008)
The globular cluster system of M60 (NGC 4649).
I. Canada-France-Hawaii telescope MOS spectroscopy and database.
Lee M.G., Hwang H.S., Park H.S., Park J.-H., Kim S.C., Sohn Y.-J.,
Lee S.-G., Rey S.-C., Lee Y.-W., Kim H.-I.
<Astrophys. J., 674, 857-868 (2008)>
=2008ApJ...674..857L 2008ApJ...674..857L
ADC_Keywords: Clusters, globular ; Photometry, CMT1T2V ; Radial velocities
Keywords: galaxies: individual (M60 = NGC 4647) -
galaxies: kinematics and dynamics - galaxies: star clusters -
techniques: spectroscopic
Abstract:
We present radial velocity measurements for globular clusters in M60,
a giant elliptical galaxy in the Virgo Cluster. Target globular
cluster candidates were selected using Washington photometry based on
deep 16'x16' images taken at the KPNO 4m telescope and using VI
photometry derived from Hubble Space Telescope WFPC2 archival images.
The spectra of the target objects were obtained with the Multi-Object
Spectrograph at the Canada-France-Hawaii Telescope. We have measured
the radial velocities of 111 objects in the field of M60: 93 globular
clusters (72 blue globular clusters with 1.0≤C-T1<1.7, and
21 red globular clusters with 1.7≤C-T1<2.4), 11 foreground
stars, six small galaxies, and the nucleus of M60.
Description:
We used the Multi-Object Spectrograph (MOS) at the CFHT during two
observing runs in 2002 February and 2003 May to obtain spectra of the
targets.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 100 139 Radial velocities of the objects in the M60 field
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1 A1 --- Cl [c*G] globular cluster, foreground star,
or Galaxy.
3- 7 I5 --- Seq Sequential number ([LHP2008] NNNNN in Simbad)
8 A1 --- n_Seq [ab] Virgo cluster galaxy (1)
10- 11 I2 h RAh Right ascension (J2000)
13- 14 I2 min RAm Right ascension (J2000)
16- 20 F5.2 s RAs Right ascension (J2000)
22 A1 --- DE- Declination sign (J2000)
23- 24 I2 deg DEd Declination (J2000)
26- 27 I2 arcmin DEm Declination (J2000)
29- 32 F4.1 arcsec DEs Declination (J2000)
34- 38 F5.1 arcsec R Projected galactocentric radius
40- 44 F5.1 deg theta Position angle (measured east from north)
46- 50 F5.2 mag T1mag T1 magnitude
52- 55 F4.2 mag e_T1mag rms uncertainty on T1mag
57- 60 F4.2 mag C-T1 C-T1 colour index
62- 65 F4.2 mag e_C-T1 rms uncertainty on C-T1
67- 72 I6 km/s RV ?=- Radial velocity measured in this study
74- 77 I4 km/s e_RV ? rms uncertainty on RV
79- 82 I4 km/s RV2 ?=- Radial velocity from Pierce et al.
(2006MNRAS.368..325P 2006MNRAS.368..325P)
84- 86 I3 km/s e_RV2 ? rms uncertainty on RV2
88- 91 I4 --- P06 ?=- Identification number in Pierce et al.
2006MNRAS.368..325P 2006MNRAS.368..325P ([PBF2006b] in Simbad)
93- 96 I4 km/s Merged, weighted mean velocity
98-100 I3 km/s e_ rms uncertainty on
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Note (1): Note as follows:
a = VCC 1963 in the Virgo Cluster catalog of Binggeli et al.
(1985, Cat. J/AJ/90/1681)
b = VCC 1982 in the Virgo Cluster catalog of Binggeli et al.
(1985, Cat. J/AJ/90/1681)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 09-Apr-2010