J/ApJ/693/617 Ellipticities of cluster early-type galaxies (Holden+, 2009)
The ellipticities of cluster early-type galaxies from z ∼ 1 to z ∼ 0:
no evolution in the overall distribution of bulge-to-disk ratios.
Holden B.P., Franx M., Illingworth G.D., Postman M., van der Wel A.,
Kelson D.D., Blakeslee J.P., Ford H., Demarco R., Mei S.
<Astrophys. J., 693, 617-633 (2009)>
=2009ApJ...693..617H 2009ApJ...693..617H
ADC_Keywords: Clusters, galaxy ; Galaxies, optical ; Photometry, VRI ; Redshifts
Keywords: galaxies: clusters: general - galaxies: clusters: individual
(CL 1226.9+3332) - galaxies: elliptical and lenticular, cD - galaxies:
evolution - galaxies: fundamental parameters - galaxies: photometry
Abstract:
We have compiled a sample of early-type cluster galaxies from 0<z<1.3
and measured the evolution of their ellipticity distributions. Our
sample contains 487 galaxies in 17 z>0.3 clusters with high-quality
space-based imaging and a comparable sample of 210 galaxies in 10
clusters at z<0.05. We select early-type galaxies (elliptical and S0
galaxies) that fall within the cluster R200, and which lie on the
red-sequence in the magnitude range -19.3>MB>-21, after correcting
for luminosity evolution as measured by the fundamental plane.
Description:
Of the clusters discussed here, only CL J1226+33 has no previously
published redshift catalog beyond the six galaxies listed in the
discovery paper (Ebeling et al. 2001ApJ...548L..23E 2001ApJ...548L..23E). We have
collected redshifts for 21 new members in the central region of the
cluster, along with 10 more galaxies outside of the region covered by
the ACS imaging. The redshift range we used for membership excludes
two galaxies at z∼0.91. Data were taken using the DEIMOS spectrograph
on Keck II.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 72 60 *The redshift catalog for CL J1226+33
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Notes on table4.dat: Data for ClG J1226+3332 as follows:
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z RA (J2000) DE Obs. Filters σ(km/s) R200(Mpc) NETG
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0.890 12 26 58.2 +33 32 49 V606 I814 1143±162 1.11 46
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NETG = The number of galaxies classified as early types with
-19.3>MB+1.208z>-21
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See also:
J/ApJS/184/271 : Photometry of galaxies in 3 clusters (Chiboucas+, 2009)
J/ApJS/176/374 : WARPS-II Cluster catalog. VII. (Horner+, 2008)
J/AJ/127/3213 : BVR imaging survey of nine early-type galaxies (Marcum+,
2004)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [GAL]
5- 20 A16 --- [HFI2009] Galaxy designation (HHMMSSss+DDMMSSs)
22- 23 I2 h RAh Hour of right ascension (J2000)
25- 26 I2 min RAm Minute of right ascension (J2000)
28- 32 F5.2 s RAs Second of right ascension (J2000)
34 A1 --- DE- Declination sign (J2000)
35- 36 I2 deg DEd Degree of declination (J2000)
38- 39 I2 arcmin DEm Arcminute of declination (J2000)
41- 45 F5.2 arcsec DEs Arcsecond of declination (J2000)
47- 51 F5.2 mag Imag HST/ACS F814W I-band magnitude (AB scale)
53- 56 F4.2 mag e_Imag Imag uncertainty
58- 61 F4.2 mag V-I V-I (AB) color index
63- 66 F4.2 mag e_V-I V-I uncertainty
68- 72 F5.3 --- z Spectroscopic redshift
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 09-Mar-2011