J/AJ/123/100 Redshifts of AWM and MKW poor clusters (Koranyi+, 2002)
Kinematics of AWM and MKW poor clusters.
Koranyi D.M., Geller M.J.
<Astron. J. 123, 100 (2002)>
=2002AJ....123..100K 2002AJ....123..100K
ADC_Keywords: Clusters, galaxy ; Redshifts ; Equivalent widths
Keywords: galaxies: clusters: general - galaxies: distances and redshifts -
galaxies: kinematics and dynamics
Abstract:
We have measured 1365 redshifts to a limiting magnitude of R∼15.5 in
15 AWM/MKW clusters and have collected another 203 from the literature
in MKW 4s, MKW 2, and MKW 2s. In AWM 7 we have extended the redshift
sample to R∼18 in the cluster center. We have identified 704 cluster
members in 17 clusters; 201 are newly identified. We summarize the
kinematics and distributions of the cluster galaxies and provide an
initial discussion of substructure, mass and luminosity segregation,
spectral segregation, velocity-dispersion profiles, and the relation
of the central galaxy to global cluster properties. We compute optical
mass estimates, which we compare with X-ray mass determinations from
the literature.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 84 1565 Kinematic data for all measured galaxies
table2.dat 70 19 Cluster Census
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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- 6 A6 --- Cluster Cluster name
8- 13 A6 --- Clust2 Second name of cluster when two clusters
considered (For MKW 2 and MKW 2s only)
15- 16 I2 h RAh Hour of Right Ascension (J2000) (1)
18- 19 I2 min RAm Minute of Right Ascension (J2000)
21- 25 F5.2 s RAs Second of Right Ascension (J2000)
27 A1 --- DE- Sign of the Declination (J2000)
28- 29 I2 deg DEd Degree of Declination (J2000)
31- 32 I2 arcmin DEm Arcminute of Declination (J2000)
34- 37 F4.1 arcsec DEs Arcsecond of Declination (J2000)
39- 43 I5 km/s cz The heliocentric recession velocity
45- 47 I3 km/s e_cz Error in cz
49- 50 A2 --- Type [Em Ab?] Em: emission-line, Ab: absorption-line
52- 56 F5.1 0.1nm EW ? The Hα equivalent width (2)
58- 62 F5.1 0.1nm e_EW ? Error in EW
64 A1 --- r_cz Source of cz (3)
66- 84 A19 --- Rem Remarks
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Note (1): Objects are identified as [KG2002] JHHMMSS.s.ss+DDMMSS.s
Note (2): Some galaxies with no measured equivalent widths are classified
as Em if the quoted redshift is from an emission-line template
(T,M,W), or if the galaxy is listed as having emission in (U,L).
Velocity errors (e_cz) for galaxies with emission-line template
velocities are boosted by 65km/s in quadrature.
Note (3): Source of cz:
T = FAST Spectrograph (Fabricant et al., 1998PASP..110...79F 1998PASP..110...79F) mounted
on the 1.5m Tillinghast telescope at the F. L. Whipple
Observatory on Mount Hopkins
M = MMT Blue Channel spectrograph
W = WIYN/Hydra, Hydra multifiber bench spectrograph on the 3.5m WIYN
telescope at Kitt Peak
U = Updated Zwicky Catalog, UZC; Falco et al., 1999,
Cat. J/PASP/111/438
L = Las Campanas Redshift Survey, LCRS; Shectman et al., 1996,
Cat. VII/203
N = NED.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Cluster Cluster name
7 A1 --- m_Cluster [ab] Multiplicity index on Cluster
9- 11 I3 --- NTot Total number of targets examined
13- 15 I3 --- NCL Number of galaxies in the cluster
17- 19 I3 --- NAb Number of absorption -line galaxies in
the cluster
21- 22 I2 --- NEm Number of emission-line galaxies in
the cluster
24- 30 F7.1 km/s cz Weighted mean cluster redshift
32- 37 F6.2 mag Mag Absolute magnitude corresponding to 15.5mag
at cz
39- 42 F4.2 deg ARad Angular search radius (1)
44- 47 F4.2 Mpc PRad Physical search radius in units of Mpc/h (1)
49- 70 A22 --- Rem Remarks
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Note (1): The projected distance from the cD to the most distant galaxy
in the region for which we measured a redshift. Conversion from
degrees to h-1Mpc uses cz, hence the difference in physical search
radius between MKW 7a and MKW 7b, and among MKW 2a, MKW 2b, and MKW 2s.
See text for details.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 10-Apr-2002