J/ApJ/663/164 VLT and ACS observations in RDCS J1252.9-2927 (Demarco+, 2007)
VLT and ACS observations of RDCS J1252.9-2927: dynamical structure and galaxy
populations in a massive cluster at z = 1.237.
Demarco R., Rosati P., Lidman C., Girardi M., Nonino M., Rettura A.,
Strazzullo V., Van Der Wel A., Ford H.C., Mainieri V., Holden B.P.,
Stanford S.A., Blakeslee J.P., Gobat R., Postman M., Tozzi P.,
Overzier R.A., Zirm A.W., Benitez N., Homeier N.L., Illingworth G.D.,
Infante L., Jee M.J., Mei S., Menanteau F., Motta V., Zheng W., Clampin M.,
Hartig G.
<Astrophys. J., 663, 164-182 (2007)>
=2007ApJ...663..164D 2007ApJ...663..164D
ADC_Keywords: Clusters, galaxy ; Redshifts ; Photometry, HST ; Spectroscopy ;
X-ray sources
Keywords: galaxies: clusters: general -
galaxies: clusters: individual (ClG J1252.9-2927)
Abstract:
We present results from an extensive spectroscopic survey, carried out
with VLT FORS, and from an extensive multiwavelength imaging data set
from the HST Advanced Camera for Surveys and ground-based facilities,
of the cluster of galaxies RDCS J1252.9-2927.
Description:
Imaging observations of RDCS J1252.9-2927 in the optical have been
carried out from the ground and from space. The ACS Wide Field Camera
(WFC) on HST was used to obtain imaging with the F775W and F850LP
filters (hereafter i775 and z850, respectively), as part of a
guaranteed time observation program (ObsID 9290). Three orbits in
i775 and five orbits in z850 were completed during 2002 May and
June.
The ground-based optical data were collected with FORS2 on the VLT,
under ESO program 169.A-0458(A). The imaging data in the B, V, and R
bands were obtained between 2003 March 1 and March 3.
Ground-based near-IR imaging observations of RDCS J1252.9-2927 were
taken with ISAAC on the ESO VLT and are described in Lidman et al.
(2004A&A...416..829L 2004A&A...416..829L) .
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 133 38 Spectroscopically confirmed cluster members
table3.dat 79 38 Photometric catalog of spectroscopically
confirmed cluster members
table4.dat 68 11 X-Ray point sources detected by Chandra
table5.dat 46 189 Spectroscopic data of field galaxies
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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- 5 I5 --- [DRL2007] Sequential number
7- 8 I2 h RAh Right ascension (J2000)
10- 11 I2 min RAm Right ascension (J2000)
13- 17 F5.2 s RAs Right ascension (J2000)
19 A1 --- DE- Declination sign (J2000)
20- 21 I2 deg DEd Declination (J2000)
23- 24 I2 arcmin DEm Declination (J2000)
26- 29 F4.1 arcsec DEs Declination (J2000)
31- 36 F6.4 --- z Redshift as obtained from cross-correlation
38- 43 F6.4 --- e_z rms uncertainty on z
45- 49 F5.2 --- R Correlation coefficient, R, as defined in
Tonry & Davis (1979AJ.....84.1511T 1979AJ.....84.1511T)
51-102 A52 --- SpLines Most prominent spectral features identified
in the spectrum (1)
104 I1 --- Em [0/1] Emission-line flag: 0 = no emission,
1 = narrow emission lines
106-109 F4.2 10-20W/m2 F[OII] ? Integrated [OII] line flux
111-114 F4.2 10-20W/m2 e_F[OII] ? rms uncertainty on F[OII]
116-119 I4 0.1nm EW[OII] ? [OII] equivalent width
121-123 I3 0.1nm e_EW[OII] ? rms uncertainty on EW[II]
125-128 F4.2 solMass/yr SFR ? Star-formation rate
130-133 F4.2 solMass/yr e_SFR ? rms uncertainty on SFR
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Note (1): Most prominent spectral features:
FeI (λ3581), HeI (λ3614), [OII] (λ3727),
H10 (λ3750), H9 (λ3770), H8 (λ3799),
MgI (λ3834), H6 (λ3889),
the CaII lines H (λ3934) and K (λ3969),
the decrement at 4000Å (D4000),
Hdelta (λ4102), and CaI (λ4227).
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- [DRL2007] Sequential number
7- 11 F5.2 mag Ksmag ?=99.99 Total 2MASS Ks magnitude
13- 16 F4.2 mag e_Ksmag ?=- rms uncertainty on Ksmag
18- 21 F4.2 mag B-V ?=9.99 FORS2 B-V colour index
23- 26 F4.2 mag e_B-V ?=- rms uncertainty on B-V
28- 31 F4.2 mag V-R ?=9.99 FORS2 V-R colour index
33- 36 F4.2 mag e_V-R ?=- rms uncertainty on V-R
38- 41 F4.2 mag V-i775 ?=9.99 FORS2/HST V-i775 colour index
43- 46 F4.2 mag e_V-i775 ?=- rms uncertainty on V-i775
48- 51 F4.2 mag R-Ks ?=9.99 FORS2 R-Ks colour index
53- 56 F4.2 mag e_R-Ks ?=- rms uncertainty on R-Ks
58- 61 F4.2 mag i775-z850 ?=9.99 HST i775-z850 colour index
63- 66 F4.2 mag e_i775-z850 ?=- rms uncertainty on i775-z850
68- 71 F4.2 mag Js-Ks ?=9.99 2MASS Js-Ks colour index
73- 76 F4.2 mag e_Js-Ks ?=- rms uncertainty on Js-Ks
78- 79 I2 --- TT ? T Type (de Vaucouleurs morphology) (1)
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Note (1): -5=Elliptical, -2=S0, 1=Sa, 6=Sd 8=Irregular
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- [DRL2007] Sequential number
7- 8 I2 h RAh Right ascension (J2000)
10- 11 I2 min RAm Right ascension (J2000)
13- 17 F5.2 s RAs Right ascension (J2000)
19 A1 --- DE- Declination sign (J2000)
20- 21 I2 deg DEd Declination (J2000)
23- 24 I2 arcmin DEm Declination (J2000)
26- 29 F4.1 arcsec DEs Declination (J2000)
31- 36 F6.4 --- z Spectroscopic redshift
38- 44 E7.2 mW/m2 FX(0.5-2) Flux in the [0.5-2]keV band of Chandra
46- 52 E7.2 mW/m2 FX(2-10) Flux in the [2-10]keV band of Chandra
54- 60 E7.2 10-7W LX(0.5-2) Rest-frame X-ray luminosity in the
[0.5-2]keV band
62- 68 E7.2 10-7W LX(2-10) Rest-frame X-ray luminosity in the
[2-10]keV band
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- [DRL2007] Sequential number
6 A1 --- m_[DRL2007] [b] Multiplicity index on [DRL2007]
7 A1 --- n_[DRL2007] [*] Note on Seq (1)
10- 11 I2 h RAh Right ascension (J2000)
13- 14 I2 min RAm Right ascension (J2000)
16- 20 F5.2 s RAs Right ascension (J2000)
22 A1 --- DE- Declination sign (J2000)
23- 24 I2 deg DEd Declination (J2000)
26- 27 I2 arcmin DEm Declination (J2000)
29- 32 F4.1 arcsec DEs Declination (J2000)
34- 39 F6.4 --- z Redshift as obtained from the cross-correlation
41- 46 F6.4 --- e_z rms uncertainty on z
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Note (1): A prominent "structure" in redshift can be seen at redshift
z∼0.74 (see Sect. 3.1). Objects belonging to this "structure" are
marked with an asterisk.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 14-Jun-2009