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
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:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 84 1565 Kinematic data for all measured galaxies table2.dat 70 19 Cluster Census
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
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 Halpha 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
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) 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.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
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
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.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 10-Apr-2002
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