English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present an updated phenomenological galaxy evolution model to fit theSpitzer 24, 70 and 160 microns number counts as well as all the previous midand far infrared observations. Only a minor change of the co-moving luminositydensity distribution in the previous model (Lagache, Dole, Puget 2003),combined with a slight modification of the starburst template spectra mainlybetween 12 and 30 microns, are required to fit all the data available. We showthat the peak in the MIPS 24 micron counts is dominated by galaxies withredshift between 1 and 2, with a non negligible contribution from the z>2galaxies (~30% at S=0.2 mJy). The very close agreement between the model andnumber counts at 15 and 24 microns strikingly implies that (1) the PAHs(Policyclic Aromatic Hydrocarbons) features remain prominent in the redshiftband 0.5 to 2.5 and (2) the IR energy output has to be dominated by ~3 10^11 Loto ~3 10^12 Lo galaxies from redshift 0.5 to 2.5. Combining Spitzer with theInfrared Space Observatory (ISO) deep cosmological surveys gives for the firsttime an unbiased view of the infrared Universe from z=0 to z=2.5.Comment: 4 pages, 7 figure. In press. To appear in the Special Issue of the  ApJS

Polycyclic Aromatic Hydrocarbon Contribution to the Infrared Output Energy of the Universe at z ≃ 2