Observations of the Hubble Deep Field South with the Infrared Space Observatory - I. Observations, data reduction and mid–infrared source counts

Oliver, Seb, Mann, Robert G., Carballo, Ruth, Franceschini, Alberto, Rowan–Robinson, Michael, Kontizas, Maria, Dapergolas, Anastasios, Kontizas, Evanghelos, Verma, Aprajita, Elbaz, David, Granato, Gian Luigi, Silva, Laura, Rigopoulou, Dimitra, Gonzalez–Serrano, J. Ignacio, Serjeant, Steve, Efstathiou, Andreas and van der Werf, Paul P. (2001) Observations of the Hubble Deep Field South with the Infrared Space Observatory - I. Observations, data reduction and mid–infrared source counts. Monthly Notices of the Royal Astronomical Society, 332 (3). pp. 536-548. ISSN 0035-8711

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Abstract

We present results from a deep mid–infrared survey of the Hubble Deep Field South (HDF–S) region performed at 7 and 15μm with the CAM instrument on board the Infrared Space Observatory (ISO). The final map in each band was constructed by the coaddition of four independent rasters, registered using bright sources securely detected in all rasters, with the absolute astrometry being defined by a radio source detected at both 7 and 15μm. We sought detections of bright sources in a circular region of radius 2.5 arcmin at the centre of each map, in a manner that simulations indicated would produce highly reliable and complete source catalogues using simple selection criteria. Merging source lists in the two bands yielded a catalogue of 35 distinct sources, which we calibrated photometrically using photospheric models of late–type stars detected in our data. We present extragalactic source count results in both bands, and discuss the constraints they impose on models of galaxy evolution models, given the volume of space sampled by this galaxy population.

Item Type: Article
Additional Information: The definitive version is available at www.blackwell-synergy.com
Keywords: galaxies: formation - infrared: galaxies - surveys - galaxies: evolution - galaxies: star-burst - galaxies: Seyfert
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics
Depositing User: Gemma Farrell
Date Deposited: 14 Mar 2008
Last Modified: 07 Mar 2017 08:12
URI: http://sro.sussex.ac.uk/id/eprint/1706
Google Scholar:47 Citations

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