J/ApJ/725/1252 Confirmed members of RX J0152.7-1357 (Demarco+, 2010)
Star formation histories in a cluster environment at z ∼ 0.84.
Demarco R., Gobat R., Rosati P., Lidman C., Rettura A., Nonino M.,
van der Wel A., Jee M.J., Blakeslee J.P., Ford H.C., Postman M.
<Astrophys. J., 725, 1252-1276 (2010)>
=2010ApJ...725.1252D 2010ApJ...725.1252D
ADC_Keywords: Clusters, galaxy ; Galaxies, spectra ; Redshifts ;
Photometry, HST ; Photometry, infrared
Keywords: galaxies: clusters: general - galaxies: evolution -
galaxies: clusters: individual (RX J0152.7-1357) - galaxies: formation
Abstract:
We present a spectrophotometric analysis of galaxies belonging to the
dynamically young, massive cluster RX J0152.7-1357 at z∼0.84, aimed
at understanding the effects of the cluster environment on the star
formation history (SFH) of cluster galaxies and the assembly of the
red sequence (RS). We use VLT/FORS spectroscopy, ACS/WFC optical, and
NTT/SofI near-IR data to characterize SFHs as a function of color,
luminosity, morphology, stellar mass, and local environment from a
sample of 134 spectroscopic members. In order to increase the
signal-to-noise ratio, individual galaxy spectra are stacked according
to these properties. Moreover, the D4000, Balmer, CN3883, Fe4383, and
C4668 indices are also quantified.
Description:
As reported in Blakeslee et al. (2006, Cat. J/ApJ/644/30),
RX J0152.7-1357 was observed with ACS on board the Hubble Space
Telescope (HST) in three bands: F625W (r625), F775W, and F850LP. The
near-IR data were obtained with SofI on the ESO NTT (see Demarco et
al. 2005, Cat. J/A+A/432/381).
In this study, we use the spectra of the 102 cluster members confirmed
by Demarco et al. (2005, Cat. J/A+A/432/381), complemented with the
spectra of 32 new cluster members obtained from subsequent FORS2
spectroscopy on the ESO VLT. The data were collected between 2005
November 4 and November 7, in Visitor Mode (ESO prog ID 076.A-0889(A)).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 57 134 Spectroscopically confirmed cluster members
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See also:
B/eso : ESO Science Archive Catalog (ESO, 2012)
B/hst : HST Archived Exposures Catalog (STScI, 2007)
J/MNRAS/392/1509 : Distribution of AGNs in galaxy clusters (Gilmour+, 2009)
J/ApJS/184/271 : Photometry of galaxies in 3 clusters (Chiboucas+, 2009)
J/AJ/131/143 : Morphology of galaxies (Homeier+, 2006)
J/MNRAS/365/1392 : VRi'z' phot. + redshifts around RX J0152.7-1352 (Tanaka+,
2006)
J/ApJ/644/30 : HST observations of 2 high-z clusters (Blakeslee+, 2006)
J/A+A/432/381 : VLT spectroscopic survey of RX J0152.7-1357 (Demarco+, 2005)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- [DRL2005] Galaxy ID (as in Demarco et al., 2005,
Cat. J/A+A/432/381, for the 102 already known)
7- 13 F7.4 deg RAdeg Right ascension in decimal degrees (J2000)
15- 22 F8.4 deg DEdeg Declination in decimal degrees (J2000)
24- 29 F6.3 mag Ksmag ? NTT/SofI Ks-band magnitude
31- 35 F5.3 mag e_Ksmag ? Ksmag uncertainty
37- 42 F6.3 mag r-Ks ? r625-Ks color index
44- 48 F5.3 mag e_r-Ks ? r-Ks uncertainty
50- 55 F6.4 --- z Galaxy redshift (with error∼10-3)
57 I1 --- EL [0/2] Emission line flag as in Demarco et al.,
2005, Cat. J/A+A/432/381 (1)
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Note (1): Flag as follows:
0 = passive galaxy
1 = emission line galaxy
2 = AGN
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History:
From electronic version of the journal
References:
Demarco et al. 2005A&A...432..381D 2005A&A...432..381D Cat. J/A+A/432/381
Blakeslee et al. 2006ApJ...644...30B 2006ApJ...644...30B Cat. J/ApJ/644/30
(End) Emmanuelle Perret [CDS] 09-Aug-2012