cid 4ba637882f477c15a02b5c5735faf57f62c484ba19ec53cf498acc2a1f5b718a · original · open access · via openalex
Title: HerMES: The SPIRE confusion limit Authors: H. T. Nguyen; B. Schulz; L. Levenson; A. Amblard; V. Arumugam; Hervé Aussel; Tom S. R. Babbedge; Andrew W. Blain; Jamie J. Bock; A. Boselli; V. Buat; N. Castro-Rodríguez; A. Cava; Pierre F. Chanial; E. Chapin; David L. Clements; A. Conley; L. Conversi; Asantha Roshan Cooray; Charles Darren Dowell; E. Dwek; S. A. Eales; D. Elbaz; M. Fox; A. Franceschini; W. K. Gear; J. Glenn; Matt Griffin; M. Halpern; E. Hatziminaoglou; E. Ibar; K. G. Isaak; Rob J. Ivison; G. Lagache; Lu NY; Suzanne C. Madden; Bruno Maffei; Gabriele Mainetti; L. Marchetti; G. Marsden; Jonathan P. Marshall; Brian O'Halloran; S. J. Oliver; A. Omont; M. J. Page; P. Panuzzo; A. Papageorgiou; C. P. Pearson; I. Perez Fournón; M. Pohlen; Naseem Rangwala; D. Rigopoulou; Davide Rizzo; I. G. Roseboom; Michael Rowan-robinson; Douglas Scott; Nicholas Seymour; David L. Shupe; A. J. Smith; J. A. Stevens; Myrto Symeonidis; M. Trichas; K. E. Tugwell; Mattia Vaccari; I. Valtchanov; Laurent G. Vigroux; L. Wang; R. Ward; Don V. Wiebe; Gillian Wright; Cong Kevin Xu; Michael B. Zemcov Venue: Astronomy and Astrophysics Year: 2010 Canonical: doi:10.1051/0004-6361/201014680 URL: https://doi.org/10.1051/0004-6361/201014680 Collector: openalex OA: true ABSTRACT We report on the sensitivity of SPIRE photometers on the Herschel Space Observatory. Specifically, we measure the confusion noise from observations taken during the science demonstration phase of the Herschel Multi-tiered Extragalactic Survey. Confusion noise is defined to be the spatial variation of the sky intensity in the limit of infinite integration time, and is found to be consistent among the different fields in our survey at the level of 5.8, 6.3 and 6.8 mJy/beam at 250, 350 and 500 μm, respectively. These results, together with the measured instrument noise, may be used to estimate the integration time required for confusion limited maps, and provide a noise estimate for maps obtained by SPIRE.