Evolution of Interstellar Dust (SAG-4) Overview
SAG-4 Overview SAG-4 Primary Data Access


The goal of the "Evolution of interstellar dust" guaranteed time key project (PI: A. Abergel & A. Zavagno) is to explore with Herschel the far-infrared (FIR) to submillimeter (submm) emission properties of dust particles in a wide range of regions within our Galaxy, from very diffuse clouds to sites of star formation and proto-stars. Photometric data taken with SPIRE and PACS are complemented with spectroscopy using the FTS of SPIRE and PACS to derive the physical conditions of the gas from the lines of [CI], the high-level rotational lines of CO, and the major cooling lines of [CII] and [OI].

If you use SAG-4 data, please cite both the journal article Abergel et al. (2010) and the dataset Digital Object Identifier (DOI): 10.26131/IRSA77.

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Data Set Characteristics

Data ProductDescriptionData Access
Images Herschel PACS: 70, 100, 160 microns
Herschel SPIRE: 250, 350, 500 microns
Spectral cubes Herschel PACS: [OI] 63 microns, [NII] 122 microns, [OI] 145 microns, [CII] 157 microns
Herschel SPIRE: 194-313, 303-671 microns

SAG-4 Documentation