J/MNRAS/391/1009 Radial kinematics in bright cluster galaxies (Loubser+ 2008)
Radial kinematics of brightest cluster galaxies.
Loubser S.I., Sansom A.E., Sanchez-Blazquez P., Soechting I.K.,
Bromage G.E.
<Mon. Not. R. Astron. Soc., 391, 1009-1028 (2008)>
=2008MNRAS.391.1009L 2008MNRAS.391.1009L
ADC_Keywords: Clusters, galaxy ; Radial velocities ; Velocity dispersion
Keywords: galaxies: elliptical and lenticular, cD -
galaxies: kinematics and dynamics
Abstract:
This is the first of a series of papers devoted to the investigation
of a large sample of brightest cluster galaxies (BCGs), their
kinematic and stellar population properties, and the relationships
between those and the properties of the cluster. We have obtained high
signal-to-noise ratio, long-slit spectra of these galaxies with Gemini
and William Herschel Telescope with the primary purpose of
investigating their stellar population properties. This paper
describes the selection methods and criteria used to compile a new
sample of galaxies, concentrating on BCGs previously classified as
containing a halo (cD galaxies), together with the observations and
data reduction. Here, we present the full sample of galaxies, and the
measurement and interpretation of the radial velocity and velocity
dispersion profiles of 41 BCGs.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 116 65 The new sample of BCGs
rv/* . 43 Individual radial kinematics files
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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- 13 A13 --- Name Galaxy name
14 A1 --- n_Name [*] * for ordinary ellipticals
16- 17 I2 h RAh Right ascension (J2000)
19- 20 I2 min RAm Right ascension (J2000)
22- 25 F4.1 s RAs RAs Right ascension (J2000)
27 A1 --- DE- Declination sign (J2000)
28- 29 I2 deg DEd Declination (J2000)
31- 32 I2 arcmin DEm Declination (J2000)
34- 35 I2 arcsec DEs Declination (J2000)
36- 51 A16 --- Cluster Cluster name
53- 70 A18 --- MType NED morphological type (1)
72- 75 F4.1 --- TType ?=- T morphological type
77- 79 F3.1 --- e_TType ? rms uncertainty on TType
81- 83 I3 deg PA ?=- Position angle of the galaxy major axis
85- 89 F5.2 mag Bmag B magnitude
91- 96 F6.2 mag BMAG ?=- Absolute B magnitude
98-101 A4 --- Ref Reference for search method (2)
103 I1 --- Run ? Run number
105-116 A12 --- FileName Name of the file with radial kinematic data
in subdirectory rv
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Note (1): Besides the galaxies classified as cD/D in the NED morphology,
NGC 6034, UGC 05515 and NGC 1129 were classified as cD/D in Schombert
(1987ApJS...64..643S 1987ApJS...64..643S); NGC 7012, ESO 146-028, ESO 346-003, ESO
202-043, NGC 3842, PGC 026269 and IC 1634 were classified as cD/D in
the NED notes by previous observations.
Note (2): Search method code as follows:
1 = WHT
2 = Gemini - N2006B
3 = Gemini - S2006B
4 = Gemini - N2007A
5 = Gemini - S2007A
6 = Gemini - S2007B
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Byte-by-byte Description of file: rv/*
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Bytes Format Units Label Explanations
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1- 6 F6.2 arcsec Rad [-50/50] Radius
8- 12 I5 km/s RV ? Radial velocity
14- 15 I2 km/s e_RV ? rms uncertainty on RV
17- 19 I3 km/s sigma ? Velocity dispersion
21- 22 I2 km/s e_sigma ? rms uncertainty on sigma
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 30-Mar-2009