EDP Sciences
Free access
Volume 490, Number 3, November II 2008
Page(s) 1165 - 1179
Section Catalogs and data
DOI http://dx.doi.org/10.1051/0004-6361:200810282
Published online 17 September 2008

A&A 490, 1165-1179 (2008)
DOI: 10.1051/0004-6361:200810282

The Hubble Legacy Archive NICMOS grism data

W. Freudling, M. Kümmel, J. Haase, R. Hook, H. Kuntschner, M. Lombardi, A. Micol, F. Stoehr, and J. Walsh

Space Telescope – European Coordinating Facility, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany
    e-mail: wfreudli@eso.org

Received 29 May 2008 / Accepted 3 September 2008

The Hubble Legacy Archive (HLA) aims to create calibrated science data from the Hubble Space Telescope archive and make them accessible via user-friendly and Virtual Observatory (VO) compatible interfaces. It is a collaboration between the Space Telescope Science Institute (STScI), the Canadian Astronomy Data Centre (CADC) and the Space Telescope – European Coordinating Facility (ST-ECF). Data produced by the Hubble Space Telescope (HST) instruments with slitless spectroscopy modes are among the most difficult to extract and exploit. As part of the HLA project, the ST-ECF aims to provide calibrated spectra for objects observed with these HST slitless modes. In this paper, we present the HLA NICMOS G141 grism spectra. We describe in detail the calibration, data reduction and spectrum extraction methods used to produce the extracted spectra. The quality of the extracted spectra and associated direct images is demonstrated through comparison with near-IR imaging catalogues and existing near-IR spectroscopy. The output data products and their associated metadata are publicly available (http://hla.stecf.org/) through a web form, as well as a VO-compatible interface that enables flexible querying of the archive of the 2470 NICMOS G141 spectra. In total, spectra of 1923  unique targets are included.

Key words: surveys -- astronomical data bases: miscellaneous -- infrared: general -- techniques: spectroscopic -- catalogs

© ESO 2008