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K-band Evolution of Elliptical Galaxies in the Cluster Abell 2390 at z=0.23

Published online by Cambridge University Press:  01 August 2006

M. Alizadeh ,
A. Fritz ,
C. Da Rocha  and
B. L. Ziegler
M. Alizadeh
Affiliation:
Institut für Astrophysik, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany email: [email protected]
A. Fritz
Affiliation:
Institut für Astrophysik, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany email: [email protected]
C. Da Rocha
Affiliation:
Institut für Astrophysik, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany email: [email protected]
B. L. Ziegler
Affiliation:
Institut für Astrophysik, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany email: [email protected]
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Abstract

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We investigate the near-infrared K-band evolution of early-type galaxies in the cluster of galaxies Abell2390 at z = 0.23. Using the Omega-Prime camera at the 3.5-m Calar Alto telescope deep imaging (texp = 53 min) over a 6' × 6' field has been obtained. The measured K-band magnitudes of 28 galaxies are combined with the spectroscopic and morphological data of Fritz et al. (2005) to construct the Faber-Jackson and Fundamental Plane relations in the NIR. By comparing our distant galaxies to a local sample of cluster ellipticals (Pahre 1999), we find on average a mild luminosity evolution for both scaling relations (ΔMK ~ 0.6 − 0.7 mag) compatible with passive evolution of the stellar populations.

Keywords

galaxies: evolutiongalaxies: elliptical and lenticularcD
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S235: Galaxy Evolution Across the Hubble Time , August 2006 , pp. 187
Copyright
Copyright © International Astronomical Union 2007

References

Fritz, 2005, MNRAS, 358, 233.CrossRefGoogle Scholar
Pahre, M. A., 1999, ApJS, 124, 127.CrossRefGoogle Scholar