J/MNRAS/357/1357 Large-scale clumpy structure in Lynx region (Nakata+, 2005)
Discovery of a large-scale clumpy structure around the Lynx supercluster
at z∼1.27.
Nakata F., Kodama T., Shimasaku K., Doi M., Furusawa H., Hamabe M.,
Kimura M., Komiyama Y., Miyazaki S., Okamura S., Ouchi M., Sekiguchi M.,
Ueda Y., Yagi M., Yasuda N.
<Mon. Not. R. Astron. Soc., 357, 1357-1362 (2005)>
=2005MNRAS.357.1357N 2005MNRAS.357.1357N
ADC_Keywords: Clusters, galaxy ; X-ray sources
Keywords: galaxies: clusters: individual: RXJ 0848.6+4453, RXJ 0848.9+4452 -
galaxies: evolution - galaxies: formation -
large-scale structure of Universe
Abstract:
We report the discovery of a probable large-scale structure composed
of many galaxy clumps around the known twin clusters at z=1.26 and
1.27 in the Lynx region. Our analysis is based on deep, panoramic, and
multicolour imaging, 26.4x24.1arcmin2 in VRi'z' bands with the
Suprime-Cam on the 8.2-m Subaru telescope. This unique, deep and
wide-field imaging data set allows us for the first time to map out
the galaxy distribution in the highest-redshift supercluster known.
Description:
The Lynx field was observed over 2000 November2001 March in the V, R,
i' and z' bands with the Suprime-Cam. Only eight of the 10
charge-coupled devices (CCDs) of the Suprime-Cam were ready at the
time of these observations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 83 9 Properties of the clusters and the cluster/group
candidates.
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See also:
J/AJ/123/2223 : SPICES II: CHANDRA observations of Lynx (Stern+, 2002)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- [NKS2005] Cluster/group identification (clN or grN)
4 A1 --- f_[NKS2005] [c] contamination flag (1)
6- 7 I2 h RAh Right ascension (J2000.0)
9- 10 I2 min RAm Right ascension (J2000.0)
12- 15 F4.1 s RAs Right ascension (J2000.0)
17 A1 --- DE- Declination sign (J2000.0)
18- 19 I2 deg DEd Declination (J2000.0)
21- 22 I2 arcmin DEm Declination (J2000.0)
24- 27 F4.1 arcsec DEs Declination (J2000.0)
29- 32 F4.1 Mpc-2 Sigma Local surface density (2)
34- 36 F3.1 Mpc-2 e_Sigma rms uncertainty on Sigma
37 A1 --- n_Sigma [)] Uncertainty flag on Sigma
39- 42 F4.1 Mpc-2 SigmaR Red local surface density (2)
44- 46 F3.1 Mpc-2 e_SigmaR rms uncertainty on Sigmared
47 A1 --- n_SigmaR [)] Uncertainty flag on Sigmared
49- 52 F4.1 --- N0.5 Number of galaxies within a 0.5-Mpc radius
from the cluster centre and within the
magnitude range between m1 and m1+3
measured in the R band at z∼0.5
54- 56 F3.1 --- e_N0.5 rms uncertainty on N0.5
57 A1 --- n_N0.5 [)] Uncertainty flag on N0.5
59- 61 A3 --- R Richness class
62 A1 --- n_R [)] Uncertainty flag on R
64- 67 F4.1 aW/m2 FX ?=- X-ray flux density in 0.5-2.0keV band (3)
69- 71 F3.1 aW/m2 e_FX ?=- rms uncertainty on FX
72 A1 --- n_FX [bd] Note on FX (4)
74 A1 --- l_LX Limit flag on LX (3σ upper limit)
75- 78 F4.2 10+37W LX ?=- X-ray luminosity in 0.5-2.0keV band (3)
80- 83 F4.2 10+37W e_LX ?=- rms uncertainty on LX
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Note (1): The 'c' flag indicates that the tabulated numbers for gr1
may be significantly affected by the contamination of the blue
galaxies in the X≲4.5 (arcmin) region, and hence unreliable
Note (2): The local surface densities given in the table indicate
those after the remaining field contaminations have been subtracted
(see Section 3 for detail). In the table, H0=69km/s/Mpc,
Ω0=0.3 and Λ_0-=0.7 are assumed.
Note (3): r=35-arcsec aperture; flux in 10-15erg/cm2/s,
luminosity in 10+44erg/s
Note (4): Notes on FX as follows:
b = Quoted from Stanford et al. (2001ApJ...552..504S 2001ApJ...552..504S)
d = The flux (corrected for the Galactic absorption) and luminosity
are given in the rest-frame 0.5-2keV band. They are converted
from the 0.5-2keV count rate in the observed frame by assuming
an optically thin thermal plasma model at z=1.27 with a
temperature of 6keV and elemental abundances of 0.3 solar.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 10-Feb-2006