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GRAPES, Grism Spectroscopy of the Hubble Ultra Deep Field: Description and Data Reduction

Pirzkal, N. and Xu, C. and Malhotra, S. and Rhoads, J. E. and Koekemoer, A. M. and Moustakas, L. A. and Walsh, J. R. and Windhorst, R. A. and Daddi, E. and Cimatti, A. and Ferguson, H. C. and Gardner, Jonathan P. and Gronwall, C. and Haiman, Z. and Kummel, M. and Panagia, N. and Pasquali, A. and Stiavelli, M. and di Serego Alighieri, S. and Tsvetanov, Z. and Vernet, J. and Yan, H. (2004) GRAPES, Grism Spectroscopy of the Hubble Ultra Deep Field: Description and Data Reduction. Astrophysical Journal Supplement Series, 154 (2). pp. 501-508. ISSN 0067-0049. doi:10.1086/422582.

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We present deep unbiased spectroscopy of the Hubble Ultra Deep Field (UDF) carried out using the slitless grism spectroscopy mode of the Advanced Camera for Surveys on the Hubble Space Telescope (HST). The Grism ACS Program for Extragalactic Science (GRAPES) achieves continuum detection as faint as z_(AB) = 27.2 using 40 orbits (9.2 × 10^4 s) on HST. The data were taken at four orientation angles to correct for the overlap of spectra. GRAPES data provide a unique, uninterrupted, low-resolution (R = 100) spectral coverage for 5500 Å < λ < 10500 Å and allow us to detect high-redshift galaxies at 4 < z < 7 whether they have Lyα lines or just show the Lyman break, as well as find low-luminosity active galactic nuclei in an unbiased fashion. This paper describes in detail the observations and the data reduction and examines the quality of the extracted spectra. Subsequent papers will deal with the analysis of the data. The extracted and calibrated GRAPES spectra will be available from MAST at STScI.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Pirzkal, N.0000-0003-3382-5941
Xu, C.0000-0002-1588-6700
Malhotra, S.0000-0002-9226-5350
Rhoads, J. E.0000-0002-1501-454X
Koekemoer, A. M.0000-0002-6610-2048
Moustakas, L. A.0000-0003-3030-2360
Daddi, E.0000-0002-3331-9590
Ferguson, H. C.0000-0001-7113-2738
Haiman, Z.0000-0003-3633-5403
Stiavelli, M.0000-0001-9935-6047
di Serego Alighieri, S.0000-0001-8769-2692
Vernet, J.0000-0002-8639-8560
Additional Information:© 2004. The American Astronomical Society. Received 2004 March 18; accepted 2004 May 13. This work was supported by grant GO-09793.01-A from the Space Telescope Science Institute, which is operated by AURA under NASA contract NAS5-26555. This project has made use of the aXe extraction software, produced by ST-ECF, Garching, Germany.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Subject Keywords:galaxies: high-redshift; surveys; techniques: spectroscopic
Issue or Number:2
Record Number:CaltechAUTHORS:20170408-164113638
Persistent URL:
Official Citation:N. Pirzkal et al 2004 ApJS 154 501
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:76232
Deposited By: 1Science Import
Deposited On:08 Mar 2018 23:29
Last Modified:15 Nov 2021 16:58

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