HerMES: The SPIRE confusion limit
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 microns, 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.
Cite
@article{arxiv.1005.2207,
title = {HerMES: The SPIRE confusion limit},
author = {H. T. Nguyen and B. Schulz and L. Levenson and A. Amblard and V. Arumugam and H. Aussel and T. Babbedge and A. Blain and J. Bock and A. Boselli and V. Buat and N. Castro-Rodriguez and A. Cava and P. Chanial and E. Chapin and D. L. Clements and A. Conley and L. Conversi and A. Cooray and C. D. Dowell and E. Dwek and S. Eales and D. Elbaz and M. Fox and A. Franceschini and W. Gear and J. Glenn and M. Griffin and M. Halpern and E. Hatziminaoglou and E. Ibar and K. Isaak and R. J. Ivison and G. Lagache and N. Lu and S. Madden and B. Maffei and G. Mainetti and L. Marchetti and G. Marsden and J. Marshall and B. O'Halloran and S. J. Oliver and A. Omont and M. J. Page and P. Panuzzo and A. Papageorgiou and C. P. Pearson and I. Perez-Fournon and M. Pohlen and N. Rangwala and D. Rigopoulou and D. Rizzo and I. G. Roseboom and M. Rowan-Robinson and Douglas Scott and N. Seymour and D. L. Shupe and A. J. Smith and J. A. Stevens and M. Symeonidis and M. Trichas and K. E. Tugwell and M. Vaccari and I. Valtchanov and L. Vigroux and L. Wang and R. Ward and D. Wiebe and G. Wright and C. K. Xu and M. Zemcov},
journal= {arXiv preprint arXiv:1005.2207},
year = {2015}
}
Comments
Astronomy and Astrophysics, Herschel Special Issue, in press as a Letter; 5 pages