Observations of the Hubble Deep Field with the Infrared Space Observatory - II. Source detection and photometry

P. Goldschmidt, S. J. Oliver, S. B.G. Serjeant, A. Baker, N. Eaton, A. Efstathiou, C. Gruppioni, R. G. Mann, B. Mobasher, M. Rowan-Robinson, T. J. Sumner, L. Danese, D. Elbaz, A. Franceschini, E. Egami, M. Kontizas, A. Lawrence, R. McMahon, H. U. Norgaard-Nielsen, I. Perez-FournonJ. I. Gonzalez-Serrano

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

We present positions and fluxes of point sources found in the Infrared Space Observatory (ISO) images of the Hubble Deep Field (HDF) at 6.7 and 15 μm. We have constructed algorithmically selected 'complete' flux-limited samples of 19 sources in the 15-μm image, and seven sources in the 6.7-μm image. The typical flux limit at 15 μm is ∼0.2 mJy and at 6.7 μm is ∼0.04 mJy. We have selected 'supplementary' samples of three sources at 15 μm and 20 sources at 6.7 μm by eye. We discuss the completeness and reliability of the connected pixel source detection algorithm used, by comparing the intrinsic and estimated properties of simulated data, and also by estimating the noise properties of the real data. The most pessimistic estimate of the number of spurious sources in the 'complete' samples is one at 15 μm and two at 6.7 μm, and in the 'supplementary' lists is one at 15 μm and five at 6.7 μm.

Original languageEnglish (US)
Pages (from-to)465-470
Number of pages6
JournalMonthly Notices of the Royal Astronomical Society
Volume289
Issue number2
DOIs
StatePublished - 1997
Externally publishedYes

Keywords

  • Infrared: Galaxies
  • Surveys

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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