Normal Gas-Rich Galaxies in the Far-Infrared: The Legacy of ISOPHOT

Details Normal Gas-Rich Galaxies in the Far-Infrared: The Legacy of ISOPHOT Normal Gas-Rich Galaxies in the Far-Infrared: The Legacy of ISOPHOT

2005-02-09

arxiv.org/abs/astro-ph/0502179v1

Astronomy and Astrophysics

Astrophysics

Invited review presented at "The Spectral Energy Distribution of Gas-Rich Galaxies: Confronting Models with Data", Heidelberg,

Scientific paper

10.1063/1.1913949

Following on from IRAS, the ISOPHOT instrument on board the Infrared Space Observatory (ISO) has provided a huge advancement in our knowledge of the phenomenology of the far-infrared (FIR) emission of normal galaxies and the underlying physical processes. Highlights include: the discovery of an extended cold dust emission component, present in all types of gas-rich galaxies and carrying the bulk of the dust luminosity; the definitive characterisation of the spectral energy distribution in the FIR, revealing the channels through which stars power the FIR light; the derivation of realistic geometries for stars and dust from ISOPHOT imaging and the discovery of cold dust associated with HI extending beyond the optical body of galaxies.

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