Bibcode
Pascale, E.; Auld, R.; Dariush, A.; Dunne, L.; Eales, S.; Maddox, S.; Panuzzo, P.; Pohlen, M.; Smith, D. J. B.; Buttiglione, S.; Cava, A.; Clements, D. L.; Cooray, A.; Dye, S.; de Zotti, G.; Fritz, J.; Hopwood, R.; Ibar, E.; Ivison, R. J.; Jarvis, M. J.; Leeuw, L.; López-Caniego, M.; Rigby, E.; Rodighiero, G.; Scott, D.; Smith, M. W. L.; Temi, P.; Vaccari, M.; Valtchanov, I.
Referencia bibliográfica
Monthly Notices of the Royal Astronomical Society, Volume 415, Issue 1, pp. 911-917.
Advertised on:
7
2011
Número de citas
109
Número de citas referidas
106
Descripción
We have reduced the data taken with the Spectral and Photometric Imaging
Receiver (SPIRE) photometer on board the Herschel Space Observatory in
the Science Demonstration Phase (SDP) of the Herschel Astrophysical
Terahertz Large Area Survey (H-ATLAS). We describe the data reduction,
which poses specific challenges, both because of the large number of
detectors which can have noise correlated in each array, and because
only two scans are made for each region. We implement effective
solutions to process the bolometric timelines into maps, and show that
correlations among detectors are negligible, and that the photometer is
stable on time scales up to 250 s. This is longer than the time the
telescope takes to cross the observed sky region, and it allows us to
use naive binning methods for an optimal reconstruction of the sky
emission. The maps have equal contribution of confusion and white
instrumental noise, and the former is estimated to 5.3, 6.4 and 6.7 mJy
beam-1 (1σ), at 250, 350 and 500 μm, respectively.
This pipeline is used to reduce other H-ATLAS observations, as they
became available, and we discuss how it can be used with the optimal map
maker implemented in the Herschel Interactive Processing Environment
(HIPE), to improve computational efficiency and stability. The SDP data
set is available from . Herschel is an ESA space observatory with
science instruments provided by European-led Principal Investigator
consortia and with important participation from NASA.
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