J/A+A/409/439 Redshifts of 11 EIS clusters (Olsen+, 2003)
Multi-object spectroscopy of low redshift EIS clusters. II.
Olsen L.F., Hansen L., Jorgensen H.E., Benoist C., da Costa L., Scodeggio M.
<Astron. Astrophys. 409, 439 (2003)>
=2003A&A...409..439O 2003A&A...409..439O
ADC_Keywords: Clusters, galaxy ; Redshifts
Keywords: cosmology: observations - galaxies: distances and redshifts
Abstract:
We present the results of carrying out multi-object spectroscopy in
10 EIS cluster fields. Based on the list of 345 galaxy redshifts we
identify significant 3D-density enhancements. For 9 of the EIS
clusters we identify significant 3D-concentrations corresponding to
the originally detected cluster candidate. We find redshifts in the
range 0.097≤z≤0.257 which is in good agreement with the matched
filter estimate of zMF=0.2. We estimate velocity dispersions in the
range 219-1160km/s for the confirmed clusters
Description:
The observations were carried out at the Danish 1.54-m telescope at La
Silla, Chile. We used the Danish Faint Object Spectrograph and Camera
(DFOSC) in the Multi-Object Spectroscopy (MOS)-mode.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 71 11 Cluster candidates selected for observations
table2.dat 64 15 Identified groups with a significance of at
least 99% as obtained by at least one of the
employed methods
tablea.dat 66 345 Redshifts obtained in the 10 fields
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See also:
J/A+A/388/1 : Redshifts of five EIS clusters (Paper I) (Hansen+, 2002)
J/A+A/379/740 : ESO Imaging Survey (EIS) (Arnouts+, 2001)
J/A+A/384/81 : ESO Imaging Survey. CDFS point sources (Hatziminaoglou+, 2002)
J/A+A/392/741 : Stellar Catalogue in the Chandra DFS (Groenewegen+ 2002)
J/A+AS/137/75 : ESO Imaging Survey. IV. (Zaggia+, 1999)
J/A+AS/137/83 : ESO Imaging Survey. VII. (Scodeggio+, 1999)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Field Cluster field designation (1)
17- 18 I2 h RAh Right ascension (J2000)
20- 21 I2 min RAm Right ascension (J2000)
23- 26 F4.1 s RAs Right ascension (J2000)
28 A1 --- DE- Declination sign (J2000)
29- 30 I2 deg DEd Declination (J2000)
32- 33 I2 arcmin DEm Declination (J2000)
35- 38 F4.1 arcsec DEs Declination (J2000)
40- 43 F4.1 --- Lambda Cluster richness (2)
45- 47 I3 --- NR Abell-like richness
49 A1 --- Masks ? Number of slitmasks
50- 71 A22 --- n_Masks Note on Masks
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Note (1): Here we have added a "J" in the name to conform with
international standards. This notation will be used throughout this
work. The EIS identification is the same except for this "J".
Note (2): this Λcl index is defined in
Olsen et al. (1999A&A...345..681O 1999A&A...345..681O)
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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- 15 A15 --- Field Cluster field designation
17- 18 I2 --- Nmemb Number of cluster members
20- 21 I2 h RAh Right ascension (J2000)
23- 24 I2 min RAm Right ascension (J2000)
26- 29 F4.1 s RAs Right ascension (J2000)
31 A1 --- DE- Declination sign (J2000)
32- 33 I2 deg DEd Declination (J2000)
35- 36 I2 arcmin DEm Declination (J2000)
38- 41 F4.1 arcsec DEs Declination (J2000)
43- 47 F5.3 --- z Redshift
49- 52 I4 km/s sigmav ? Velocity dispersion (1)
54- 57 F4.1 % sigma1 Significance of the first method
59- 62 F4.1 % sigma2 Significance of the second method
64 A1 --- Note [d] Note (2)
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Note (1): The meaning of the missing sigmav is described in the text.
Note (2): Clusters marked with d are the ones we interpret as causing
the cluster detection as discussed in the text.
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Byte-by-byte Description of file: tablea.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Field Cluster field designation
17- 18 I2 --- Seq Sequential number in the filed (1)
22- 23 I2 h RAh Right ascension (J2000)
25- 26 I2 min RAm Right ascension (J2000)
28- 33 F6.3 s RAs Right ascension (J2000)
35 A1 --- DE- Declination sign (J2000)
36- 37 I2 deg DEd Declination (J2000)
39- 40 I2 arcmin DEm Declination (J2000)
42- 46 F5.2 arcsec DEs Declination (J2000)
51- 55 F5.2 mag Imag I magnitude
58- 63 F6.4 --- z Redshift
64 A1 --- n_z [:e] Note on z (2)
66 A1 --- Memb [m] m: galaxy considered as member of the cluster
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Note (1): The objects are identified as [OHJ2003] EIS JHHMM+DDMMA NN in Simbad
Note (2): Note on z:
: represents a less secure redshift as described in the text
e represents that the galaxy has one or more emission lines.
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History:
From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 07-Nov-2003