HerMES: The contribution to the cosmic infrared background from galaxies selected by mass and redshift
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Date
2013
Journal Title
Journal ISSN
Volume Title
Publisher
American Astronomical Society
Abstract
The cosmic infrared background (CIB), discovered in Far
Infrared Absolute Spectrophotometer (FIRAS) data from the
Cosmic Background Explorer (COBE; Puget et al. 1996;
Fixsen et al. 1998), originates from thermal re-radiation of
imagine cutting out hundreds of thumbnails from a map centered
on the positions where galaxies are known to be, and averaging
those thumbnails together until an image of the average galaxy
emerges from the noise. These positional priors can come
in many forms, e.g., they could be catalogs of UV, optical,
IR, or radio sources. Note that the output is the average of
that population in the stacked maps, i.e., there will likely be
sources whose actual fluxes are higher or lower. Thus, the more
homogeneous the sources comprising the input list, the more
meaningful the stacked flux will be.
Description
Keywords
Cosmology, Observations – galaxies, Infrared, Galaxies – large-scale structure of universe, Astrophysics, Cosmic infrared background (CIB), Far Infrared Absolute Spectrophotometer (FIRAS), Stacking
Citation
Viero, M.P., et al. (2013). HerMES: The contribution to the cosmic infrared background from galaxies selected by mass and redshift. The Astrophysical Journal, 779(32): 1-23