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ERO R1 in the field of CL0939+4713 – Evidence for an SO-like galaxy at z ~ 1.5

Published online by Cambridge University Press:  26 May 2016

M. Iye ,
N. Kashikawa ,
M. Imanishi ,
T. Kodama ,
M. Chiba ,
K. Shimasaku ,
S. Okamura ,
S. Miyazaki ,
C. Simpson  and
N. Kobayashi
...Show all authors
M. Iye
Affiliation:
National Astronomical Observatory, Mitaka, Tokyo 181-8588, Japan
N. Kashikawa
Affiliation:
National Astronomical Observatory, Mitaka, Tokyo 181-8588, Japan
M. Imanishi
Affiliation:
National Astronomical Observatory, Mitaka, Tokyo 181-8588, Japan
T. Kodama
Affiliation:
National Astronomical Observatory, Mitaka, Tokyo 181-8588, Japan
M. Chiba
Affiliation:
National Astronomical Observatory, Mitaka, Tokyo 181-8588, Japan
K. Shimasaku
Affiliation:
Dept. of Astronomy, Univ. of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
S. Okamura
Affiliation:
Dept. of Astronomy, Univ. of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
S. Miyazaki
Affiliation:
Subaru Telescope, NAOJ, 650 North A'Ohoku Pl., Hilo, HI 96720, USA
C. Simpson
Affiliation:
Subaru Telescope, NAOJ, 650 North A'Ohoku Pl., Hilo, HI 96720, USA
N. Kobayashi
Affiliation:
Subaru Telescope, NAOJ, 650 North A'Ohoku Pl., Hilo, HI 96720, USA
H. Terada
Affiliation:
Subaru Telescope, NAOJ, 650 North A'Ohoku Pl., Hilo, HI 96720, USA
M. Goto
Affiliation:
Subaru Telescope, NAOJ, 650 North A'Ohoku Pl., Hilo, HI 96720, USA
F. Iwamuro
Affiliation:
Dept. of Astronomy, Kyoto Univ., Kita-shirakawa, Kyoto 606-8502, Japan

Abstract

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An elongated ERO with R - K′ = 7.5 behind the cluster A851 at z=0.4 was found to lie at z = 1.5 both by the photometric redshift and by a cross correlation method of its H-band SED with local E/SO spectra. the luminosity profile is well represented by a seeing convolved exponential disk, and the lack of redshifted H-alpha emission indicates that it has a dynamically relaxed disk with an old stellar population. Gravitational lensing of the cluster is not strong enough to stretch the image and cannot convert the de Vaucouleurs law into an exponential law.

Type
Part 5: Clusters and Ellipticals
Information
Symposium - International Astronomical Union , Volume 220: Dark Matter in Galaxies , 2004 , pp. 181 - 182
Copyright
Copyright © Astronomical Society of the Pacific 2004