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J/MNRAS/321/277 EFAR Catalog. VII. (Colless+, 2001)
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The peculiar motions of early-type galaxies in two distant regions -
VII. Peculiar velocities and bulk motions
Colless M.M., Saglia R.P., Burstein D., Davies R.L., McMahan R.K., Wegner G.
<Mon. Not. R. Astron. Soc. 321, 277 (2001)>
=2001MNRAS.321..277C
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ADC_Keywords: Galaxies, spectra ; Radial velocities ; Velocity dispersion ;
Morphology
Keywords: galaxies: clusters: general - galaxies: distances and redshifts -
galaxies: elliptical and lenticular, cD -
galaxies: fundamental parameters - large-scale structure of Universe
Abstract:
We present peculiar velocities for 85 clusters of galaxies in two
large volumes at distances between 6000 and 15000km/s in the
directions of Hercules-Corona Borealis and Perseus-Pisces-Cetus (the
EFAR sample). These velocities are based on Fundamental Plane (FP)
distance estimates for early-type galaxies in each cluster. We fit the
FP using a maximum likelihood algorithm which accounts for both
selection effects and measurement errors, and yields FP parameters
with smaller bias and variance than other fitting procedures. We
obtain a best-fitting FP with coefficients consistent with the best
existing determinations. We measure the bulk motions of the sample
volumes using the 50 clusters with the best-determined peculiar
velocities.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 282 795 EFAR summary data table
table2.dat 103 115 Redshifts, distances and peculiar velocities for
EFAR clusters in the CMB frame
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See also:
J/ApJS/106/1 : EFAR cluster and galaxy selection. I (Wegner+, 1996)
J/MNRAS/305/259 : EFAR gal. redshifts + velocity disp. II (Wegner+, 1999)
J/MNRAS/292/499 : EFAR photometric data. III. (Saglia+, 1997)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- GIN Galaxy Identification Number
5- 6 I2 --- CID Cluster Identification
(see EFAR Paper I, <J/ApJS/106/1>)
8- 10 I3 --- CAN Cluster Assignment Number
(usually, last 2 digits = CID;
see EFAR Paper II, <J/MNRAS/305/259>)
12- 19 A8 --- Cluster Cluster Name (corresponds to CID)
21- 22 A2 --- Galaxy Galaxy designation in cluster
24- 25 I2 h RAh Right Ascension (J2000)
27- 28 I2 min RAm Right Ascension (J2000)
30- 35 F6.3 s RAs Right Ascension (J2000)
37 A1 --- DE- Declination sign (J2000)
38- 39 I2 deg DEd Declination (J2000)
41- 42 I2 arcmin DEm Declination (J2000)
44- 47 F4.1 arcsec DEs Declination (J2000)
49- 54 F6.2 deg GLON Galactic longitude
56- 61 F6.2 deg GLAT Galactic latitude
63- 66 A4 --- MType Morphological type
68- 73 F6.2 arcsec Dn Diameter enclosing a mean R-band surface
brightness of 20.5 mag/arcsec^2^
75- 78 F4.2 arcsec e_Dn Error in Dn
80- 85 F6.2 arcsec Dn20 Diameter enclosing a mean R-band surface
brightness of 20 mag/arcsec^2^
87- 92 F6.2 arcsec Dn19.25 Diameter enclosing a mean R-band surface
brightness of 19.25 mag/arcsec^2^
94- 98 F5.2 arcsec Re Half-luminosity radius in R-band
100-104 F5.2 kpc Rekpc Half-luminosity radius in R-band
(kpc, H_0_=50, q_0_=0.5)
106-110 F5.2 mag/arcsec+2 SBe R-band surface brightness at Re
112-115 F4.2 mag/arcsec+2 e_SBe Photometric zero-point error on SBe
117-121 F5.2 mag/arcsec+2 <SBe> Mean R-band surface brightness inside Re
123-126 F4.2 mag/arcsec+2 e_<SBe> Photometric zero-point error on <SBe>
128-132 F5.2 mag Mtot Total apparent R magnitude
134-137 F4.2 mag e_Mtot Photometric zero-point error on Mtot
139-143 F5.2 arcsec ReB Bulge half-luminosity radius in R-band
145-149 F5.2 mag/arcsec+2 SBeB Bulge R-band surface brightness at ReB
151-155 F5.2 arcsec h Disk scale-length in R-band
157-161 F5.2 mag/arcsec+2 mu0 Disk central surface brightness in R-band
163-167 F5.3 --- h/ReB Ratio of bulge half-luminosity radius
to disk scale-length
169-174 F6.3 --- D/B Disk-to-bulge ratio (ratio of luminosity
in disk to luminosity in bulge)
176-179 A4 --- Fit Type of fit (1)
181 I1 --- P [0/1] Quality of the photometric
zero-point (2)
183 I1 --- Q Global quality of the photometric fit
(see EFAR Paper III, <J/MNRAS/292/499>)
185-189 F5.3 mag B-R B-R colour
191-194 F4.2 mag e_B-R Error in B-R colour
196-199 F4.2 --- e(Re) Mean ellipticity inside Re
201-205 F5.3 --- AR Reddening in R-band
207-211 I5 km/s czCl Cluster mean redshift
213-215 I3 km/s e_czCl Error in cluster mean redshift
217-221 I5 km/s cz Galaxy redshift
223-225 I3 km/s e_cz Error in galaxy redshift
227-229 I3 km/s sigma Central velocity dispersion of galaxy
231-233 I3 km/s e_sigma Error in central velocity dispersion
235-238 F4.2 0.1nm Mgb Lick Mgb line-strength index
240-243 F4.2 0.1nm e_Mgb Error in Lick Mgb index
245-249 F5.3 0.1nm Mg2 Lick Mg2 line-strength index
251-256 F6.4 0.1nm e_Mg2 Error in Lick Mg2 index
258 A1 --- QS [A-E] Spectral quality (3)
260 A1 --- AE Flag for absorption (a) or emission (e)
262-265 F4.2 [arcsec] logDw logarithm of the Dw diameter
267-271 F5.3 --- SDw Selection probability computed using Dw
273-276 F4.2 [arcsec] logDwDn logarithm of Dw computed from Dn
278-282 F5.3 --- SDwDn Selection probability computed from DwDn
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Note (1): B=bulge, D=disk, BD=bulge+disk; other,
see EFAR Paper III, <J/MNRAS/292/499>
Note (2): P=0 good, P=1 bad; see EFAR Paper III, <J/MNRAS/292/499>
Note (3): A=best, ..., E=worst; see EFAR Paper II, <J/MNRAS/305/259>
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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- 3 I3 --- CAN Cluster Assignment Number (see EFAR paper II,
<J/MNRAS/305/259>) (1)
5 I1 --- FP [0/1] Whether cluster is in the
Fundamental Plane (1) sample or (0) not
7 I1 --- PV [0/1] Whether cluster is in the
peculiar velocity (1) sample or (0) not
9- 17 A9 --- Name Cluster name (in parentheses for fore- and
background groups)
19- 20 I2 --- Ng Number of galaxies used in the distance
determination
22- 27 F6.2 deg GLON Galactic longitude
29- 34 F6.2 deg GLAT Galactic latitude
36- 42 F7.4 --- delta Bias-corrected Fundamental Plane shift
44- 49 F6.4 --- e_delta rms uncertainty in delta
51- 57 F7.4 --- edelta Bias correction {epsilon}_{delta}_ subtracted
from raw value of {delta}
59- 63 I5 km/s cz Cluster redshift
65- 67 I3 km/s e_cz rms uncertainty in cz
69- 73 I5 km/s D Bias-corrected cluster distance
75- 79 I5 km/s e_D rms uncertainty in D
81- 85 I5 km/s czD Redshift corresponding to D
87- 91 I5 km/s e_czD rms uncertainty on czD
93- 97 I5 km/s Vpec Peculiar velocity of the cluster
99-103 I5 km/s e_Vpec rms uncertainty in V
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Note (1): Some EFAR clusters are missing from this list:
CAN 81 because it has been combined with CAN 80 (see EFAR paper II,
<J/MNRAS/305/259>);
CANs 41, 47, 54 and some fore- and background groups (CANs>100)
because no cluster members meet the selection criteria.
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Acknowledgements: Matthew Colless <colless@mso.anu.edu.au>
References:
Wegner et al., Paper I 1996ApJS..106....1W, Cat. <J/ApJS/106/1>
Wegner et al., Paper II 1999MNRAS.305..259W, Cat. <J/MNRAS/305/259>
Saglia et al., Paper III 1997MNRAS.292..499S, Cat. <J/MNRAS/292/499>
Saglia et al., Paper IV 1997ApJS..109...79S
Colless et al., Paper V 1999MNRAS.303..813C
Saglia et al., Paper VI 2001MNRAS.324..389S
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(End) Patricia Bauer [CDS] 28-Aug-2000