J/AJ/132/514 Galaxies of RX J1416.4+2315 cluster (Cypriano+, 2006)
Velocity dispersion, mass, and the luminosity function of the fossil cluster
RX J1416.4+2315.
Cypriano E.S., Mendes de Oliveira C.L., Sodre L.Jr
<Astron. J., 132, 514-520 (2006)>
=2006AJ....132..514C 2006AJ....132..514C
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Radial velocities
Keywords: cosmology: observations -
galaxies: clusters: individual (RX J1416.4+2315) -
galaxies: elliptical and lenticular, cD - galaxies: evolution -
galaxies: kinematics and dynamics -
galaxies: luminosity function, mass function
Abstract:
We study the properties of the fossil cluster RX J1416.4+2315 through
g'- and i'-band imaging and spectroscopy of 25 member galaxies. The
system is at a mean redshift of 0.137 and has a velocity dispersion of
584km/s. Superposed onto one quadrant of the cluster field is a
group of five galaxies at a mean redshift of 0.131, which, if included
as part of the cluster, increases the velocity dispersion to 846km/s.
The central object of RX J1416.4+2315 is a normal elliptical galaxy
with no cD envelope.
Description:
The imaging and multislit spectroscopic observations of the galaxy
group RX J1416.4+2315 were done with the Gemini Multi-Object
Spectrograph (GMOS) mounted on the Gemini North telescope on 2005
February 22 and 2005 March 67, respectively.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 59 54 Properties of the Galaxies in the
RX J1416.4+2315 Field
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- [CMS2006] Galaxy name (Gss.s+mmss) (1)
12- 13 I2 h RAh Right ascension (J2000.0)
15- 16 I2 min RAm Right ascension (J2000.0)
18- 21 F4.1 s RAs Right ascension (J2000.0)
23 A1 --- DE- Declination sign (J2000.0)
24- 25 I2 deg DEd Declination (J2000.0)
27- 28 I2 arcmin DEm Declination (J2000.0)
30- 31 I2 arcsec DEs Declination (J2000.0)
33- 37 F5.2 mag i'mag Total i' magnitude (in AB system)
39- 42 F4.2 mag g'-i' Aperture g'-i' colour index
44- 49 I6 km/s RV Radial velocity
51- 53 I3 km/s e_RV rms uncertainty on RV
55- 58 F4.2 --- R ? Tonry & Davis (1979AJ.....84.1511T 1979AJ.....84.1511T)
cross-correlation coefficient
59 A1 --- n_RV [e] Redshift measured from emission lines
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Note (1): The names of the galaxies are based on their J2000.0 celestial
coordinates (seconds of right ascension and arcminutes and arcseconds
of declination). Thus, galaxy Gab.c+defg is located at
14:16:ab.c +23:de:fg.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 08-Feb-2008