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

Pippa Goldschmidt, Sebastian Oliver, Steve Serjeant, Amanda Baker, N Eaton, Andreas Efstathiou, C. Gruppioni, Robert Mann, Bahram Mobasher, M. Rowan-Robinson, Tim Sumner, L. Danese, David Elbaz, Alberto Franceschini, Eiichi Egami, M. Kontizas, Andrew Lawrence, Richard McMahon, H. U. Norgaard-Nielsen, Ismael Perez-FournonJ. I. Gonzalez-Serrano

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Abstract / Description of output

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 mu. We have constructed algorithmically selected `complete' flux-limited samples of 19 sources in the 15-mu image, and seven sources in the 6.7-mu image. The typical flux limit at 15 mu is ~0.2 mJy and at 6.7 mu is ~0.04 mJy. We have selected `supplementary' samples of three sources at 15 mu and 20 sources at 6.7 mu 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 mu and two at 6.7 mu, and in the `supplementary' lists is one at 15 mu and five at 6.7 mu.
Original languageEnglish
Pages (from-to)465-470
JournalMonthly Notices of the Royal Astronomical Society
Issue number2
Publication statusPublished - 1 Aug 1997

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