J/PASJ/55/1079 BVRi'z'JHKs photometry of ERO objects (Miyazaki+, 2003)
Evolution of elliptical galaxies at z≥1 revealed from a large,
multicolor sample of extremely red objects.
Miyazaki M., Shimasaku K., Kodama T., Okamura S., Furusawa H., Ouchi M.,
Nakata F., Doi M., Hamabe M., Kimura M., Komiyama Y., Miyazaki S.,
Nagashima C., Nagata T., Nagayama T., Nakajima Y., Nakaya H., Pickles A.J.,
Sato S., Sekiguchi K., Sekiguchi M., Sugitani K., Takata T., Tamura M.,
Yagi M., Yasuda N.
<Publ. Astron. Soc. Jap., 55, 1079-1103 (2003)>
=2003PASJ...55.1079M 2003PASJ...55.1079M
ADC_Keywords: Galaxies, photometry ; Photometry, infrared ; Photometry, UBVRI
Keywords: galaxies: elliptical and lenticular, cD - galaxies: evolution -
galaxies: photometry
Abstract:
We studied the evolution of elliptical galaxies at z≳1 using a sample
of 247 Extremely Red Objects (EROs) with R-Ks>3.35 (AB) and
Ks≤22.1 (AB) constructed from BVRi'z'JHKs multicolor data of a
114arcmin2 area in the Subaru/XMM-Newton Deep Field taken with the
Subaru Telescope and the UH 2.2m telescope. By fitting template
spectra of old galaxies (OGs) and young, dusty starbursts (DSs) to the
multicolor data, we classified EROs into these two classes and
estimated their redshifts. We found that 58% of the EROs in our sample
belong to the OG class and that these OGs have a wide range of colors
at any redshift. We derived rest-frame B-band luminosity functions of
OGs in our sample at z=1-1.5 and 1.5-2.5, and found that the number
density of galaxies obeying passive evolution drops at z≳1.5 by a
factor of three or more. The spatial correlation length of OGs is
estimated to be r0≳8h-1Mpc, which is comparable to, or larger
than, those of present-day early-type galaxies of similar
luminosities. We also discussed properties of DSs in our data.
Description:
We took deep B-, V-, R-, i'- and z'-band imaging data of a 30'x24'area
in the Subaru/XMM-Newton Deep Field [02:18:00, -05:12:00 (J2000)]
with the prime focus camera (Suprime-Cam) mounted on the 8.2m Subaru
telescope during commissioning observing runs on 2000 November 24-27,
and 2001 October 14, 18, 19, and November 17.
Wide-field J, H, Ks data were obtained with the University of Hawaii
(UH) 2.2m telescope at Mauna Kea on the nights of 2001 August 28 to
September 4. The observations were made using Simultaneous 3-color
InfraRed Imager for Unbiased Survey (SIRIUS).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 85 247 ERO catalog
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See also:
J/ApJ/581/844 : Radio and Infrared observations of EROs (Smail+, 2002)
J/MNRAS/330/1 : HST observations of Extremely Red Objects (Smith+, 2002)
J/MNRAS/346/1125 : IK photometry of faint Extremely Red Objects (Gilbank+ 2003)
J/A+A/432/69 : Extremely Red Objects XMM-Newton observations (Brusa+, 2005)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Type [OGs DSs] Old galaxies (OGs) or
young, dusty starbursts (DSs)
5- 7 I3 --- [MSK2003] Sequential number
9- 12 I4 pix Xpos Relative position along right ascension (1)
14- 17 I4 pix Ypos Relative position along declination (1)
19- 23 F5.2 mag Bmag ?=99.99 B magnitude
(MAG_AUTO magnitude in AB system) (2)
25- 29 F5.2 mag Vmag ?=99.99 V magnitude, 0.00 for data not available
(MAG_AUTO magnitude in AB system) (2)
31- 35 F5.2 mag Rmag ?=99.99 R magnitude
(MAG_AUTO magnitude in AB system) (2)
37- 41 F5.2 mag i'mag ?=99.99 i' magnitude
(MAG_AUTO magnitude in AB system) (2)
43- 47 F5.2 mag z'mag ?=99.99 z' magnitude
(MAG_AUTO magnitude in AB system) (2)
49- 53 F5.2 mag Jmag ?=99.99 J magnitude
(MAG_AUTO magnitude in AB system) (2)
55- 59 F5.2 mag Hmag ?=99.99 H magnitude
(MAG_AUTO magnitude in AB system) (2)
61- 65 F5.2 mag Ksmag ?=99.99 Ks magnitude
(MAG_AUTO magnitude in AB system) (2)
67- 69 F3.1 arcsec FWHM FWHM of the Ks image
71- 74 F4.2 --- zph Photometric redshift estimated by the spectrum
fitting method.
76- 79 F4.2 mag E(B-V) Reddening estimated by the spectrum fitting
method.
81- 85 F5.3 --- fold Fraction of the passive component in the total
B luminosity estimated by the spectrum fitting
method (3)
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Note (1): Xpos increases with decreasing RA, Ypos increases with DE.
1 pix = 0.202", (0,0)=(02:18:41.0 -05:09:04) (J2000.0)
Note (2): J=0 is given when J data are not available.
MAG_AUTO is replaced with 99.99 if it is fainter than the 1σ
limiting magnitude (B=28.8, V=27.6, R=28.0, i'=27.4, z'=26.7,
J=24.5, H=24.2, Ks=23.8)
Note (3): As here we assume that the star-forming component evolves like the
disk of our Galaxy, fold may correspond to the bulge-to-total
luminosity ratio for spiral galaxies.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 22-Sep-2005