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Ultradeep near-infrared imaging of the HDF-South: rest-frame optical properties of high redshift galaxies

Labbé, Ivo and Franx, Marijn and Rudnick, Gregory and Moorwood, Alan and Förster Schreiber, Natascha and Rix, Hans-Walter and van Starkenburg, Lottie and van Dokkum, Peter and van der Werf, Paul and Röttgering, Huub and Kuijken, Konrad (2003) Ultradeep near-infrared imaging of the HDF-South: rest-frame optical properties of high redshift galaxies. In: Discoveries and Research Prospects from 6- to 10-Meter-Class Telescopes II. Proceedings of SPIE. No.4834. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 195-202. ISBN 9780819446138.

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We have obtained ultradeep J_s, H and K_s near-infrared imaging of the Hubble Deep Field South WFPC2 field with the ISAAC camera on the VLT. The total integration time of 100 hours resulted in the deepest ground-based infrared observations to date and the deepest K_s-band data ever taken. This depth allows us to determine the spectral energy distributions of the high-redshift galaxies with unprecendented accuracy. Together with existing optical observations, we use the multicolor data to select high-redshift galaxies by their rest-frame optical light, and study their statistical properties and morphologies. We find a wide variety of morphologies: some are large in the rest-frame optical and resemble normal spiral galaxies, others are barely detected in the observers optical and have red NIR colors. The latter belong to a new population of galaxies at redshifts z>2, that is notably absent in the HDF-North. The spectral energy distributions of many of such red galaxies show distinct breaks, which we identify as the balmer break/4000 Angstrom break, and their contribution to the stellar mass density is estimated to be substantial. At redshift z~3, we find a clear excess of superluminious galaxies (> 5 L*_B(z = 0)), which is consistent with 1 magnitude of luminosity evolution. Overall, the results show the necessity of deep near-infrared imaging to obtain a full census of the high redshift universe.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Labbé, Ivo0000-0002-2057-5376
Franx, Marijn0000-0002-8871-3026
Rudnick, Gregory0000-0001-5851-1856
Rix, Hans-Walter0000-0003-4996-9069
van Dokkum, Peter0000-0002-8282-9888
van der Werf, Paul0000-0001-5434-5942
Additional Information:© 2003 Society of Photo-Optical Instrumentation Engineers (SPIE). We would like to thank the ESO staff for their assistance and their hard efforts in taking these data and making them available to us.
Subject Keywords:large telescopes, near infrared imaging, high redshift galaxies, galaxy evolution, galaxy morphology, luminosity functions
Series Name:Proceedings of SPIE
Issue or Number:4834
Record Number:CaltechAUTHORS:20181213-143634078
Persistent URL:
Official Citation:Ivo Labbe, Marijn Franx, Gregory Rudnick, Alan F. M. Moorwood, Natascha Foerster Schreiber, Hans-Walter Rix, Lottie van Starkenburg, Peter van Dokkum, Paul P. van der Werf, Huub J. A. Roettgering, Konrad Kuijken, "Ultradeep near-infrared imaging of HDF-south: rest-frame optical properties of high redshift galaxies," Proc. SPIE 4834, Discoveries and Research Prospects from 6- to 10-Meter-Class Telescopes II, (13 February 2003); doi: 10.1117/12.457539
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91825
Deposited By: George Porter
Deposited On:13 Dec 2018 23:51
Last Modified:03 Nov 2019 23:22

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