J/AJ/118/1489 Tully-Fisher peculiar velocities in 52 clusters (Dale+, 1999)
Seeking the local convergence depth.
V. Tully-Fisher peculiar velocities for 52 Abell clusters.
Dale D.A., Giovanelli R., Haynes M.P., Campusano L.E., Hardy E.
<Astron. J. 118, 1489 (1999)>
=1999AJ....118.1489D 1999AJ....118.1489D
ADC_Keywords: Clusters, galaxy ; Redshifts
Keywords: cosmology: observations - distance scale -
galaxies: distances and redshifts
Abstract:
We have obtained I-band Tully-Fisher (T-F) measurements for 522
late-type galaxies in the fields of 52 rich Abell clusters distributed
throughout the sky between ∼50 and 200h-1Mpc. Here we estimate
corrections to the data for various forms of observational bias, most
notably Malmquist and cluster population incompleteness bias. The
bias-corrected data are applied to the construction of an I-band T-F
template, resulting in a relation with a dispersion of 0.38mag and a
kinematic zero point accurate to 0.02mag. This represents the most
accurate T-F template relation currently available. Individual cluster
T-F relations are referred to the average template relation to compute
cluster peculiar motions. The line-of-sight dispersion in the peculiar
motions is 341x93km/s, in general agreement with that found for the
cluster sample of Giovanelli and coworkers.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 63 52 The SCII cluster sample
table2.dat 29 52 Cluster offsets
table4.dat 54 52 Cluster peculiar velocities
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See also:
J/AJ/118/1468 : 35 Abell clusters Tully-Fisher observations (Dale+, 1999)
Byte-by-byte Description of file: table1.dat
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Bytes FormatUnits Label Explanations
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1- 6 A6 --- Cluster Cluster name
8- 9 I2 h RAh Right ascension (B1950.0)
11- 12 I2 min RAm Right ascension (B1950.0)
14- 15 I2 s RAs Right ascension (B1950.0)
17 A1 --- DE- Declination sign (B1950.0)
18- 19 I2 deg DEd Declination (B1950.0)
21- 22 I2 arcmin DEm Declination (B1950.0)
24- 25 A2 arcsec --- [00]
27- 29 I3 deg Glon Galactic longitude
31- 33 I3 deg Glat Galactic latitude
35- 39 I5 km/s czh Systemic velocity in the heliocentric
reference frame
41- 43 I3 km/s e_czh rms uncertainty on czh
45- 49 I5 km/s czCMB Systemic velocity in the CMB reference frame
51- 53 I3 --- Nz Number of cluster member redshifts used in
determining systemic velocity
55 I1 --- R ? Abell richness class
57- 63 A7 --- B-M Bautz-Morgan (1970ApJ...162L.149B 1970ApJ...162L.149B) code as
listed in the ACO catalog
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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
8- 9 I2 --- NTF Number of cluster members with reliable
photometry and velocity widths
11- 15 F5.2 mag ab-aTF Cluster magnitude offset from the
template zero point (abias-aTF)
17- 21 F5.2 mag a-aTFc Cluster magnitude offset (corrected for the
effect of cluster incompleteness) (a-aTF)
23- 24 I2 cmag e_a-aTFc rms uncertainty on a-aTF
26- 29 F4.2 mag sigmaa Dispersion in the difference between the
template and the cluster's set of absolute
magnitudes
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Byte-by-byte Description of file: table4.dat
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Bytes FormatUnits Label Explanations
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1- 6 A6 --- Cluster Cluster name
9- 14 F6.3 mag a-aTF Magnitude offset from the template zero
point (a-aTF)
16- 18 I3 mag e_a-aTF rms uncertainty on a-aTF
20- 24 I5 km/s czh2 Systemic velocity in the heliocentric
reference frame
26- 30 I5 km/s czLG Systemic velocity in the Local Group
32- 36 I5 km/s czCMB2 Systemic velocity in the CMB reference frame
39- 43 I5 km/s VTF Tully-Fischer velocity
45- 49 I5 km/s Vpec Peculiar velocity (V=cs(1-100.2*(a-aTF))
51- 54 I4 km/s e_Vpec rms uncertainty on Vpec
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History: From AJ electronic version
References:
Dale et al., Paper I 1997AJ....114..455D 1997AJ....114..455D
Dale et al., Paper II 1998AJ....115..418D 1998AJ....115..418D
Dale et al., Paper IV 1999AJ....118.1468D 1999AJ....118.1468D, Cat. J/AJ/118/1468
(End) James Marcout, Patricia Bauer [CDS] 30-Nov-1999