PRIMAger General Observer programs: a {\Large $π$}-sr Infrared Survey and other General Observer wide-field programs

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Main Authors: Burgarella, Denis, Bethermin, Matthieu, Boselli, Alessandro, Donnelan, James, Dowell, Charles Darren, Lagache, Guilaine, Oliver, Seb, Dole, Herve
Format: Preprint
Published: 2025
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author Burgarella, Denis
Bethermin, Matthieu
Boselli, Alessandro
Donnelan, James
Dowell, Charles Darren
Lagache, Guilaine
Oliver, Seb
Dole, Herve
author_facet Burgarella, Denis
Bethermin, Matthieu
Boselli, Alessandro
Donnelan, James
Dowell, Charles Darren
Lagache, Guilaine
Oliver, Seb
Dole, Herve
contents The PRobe far-Infrared Mission for Astrophysics (PRIMA) is a cryogenically-cooled, far-infrared (far-IR) observatory expected to begin serving the astronomical community by early 2030. The mission features two advanced instruments: PRIMAger and FIRESS. PRIMAger will operate across the mid- to far-IR spectrum, covering wavelengths from approximately 25 to 260 $μ$m. It will offer hyperspectral imaging in medium resolution bands (R $\sim$ 8, using a linear variable filter) from 25 to 80 $μ$m, and broad band (R $\sim$ 4) photometric and polarimetric imaging in four bands spanning 80 to 260 $μ$m. The capabilities of PRIMAger will enable a broad range of unique scientific programs, accessible through General Observer (GO) projects. In this paper, we present and define a PRIMAger survey over 25\% of the sky, called $π$-IR survey. This survey would exploit PRIMAger's hyperspectral and polarimetric modes to collect data on about 8 $\times$ 10$^{6}$ galaxies to z $\sim$ 4. The R=8 spectral resolution of the PRIMAger Hyperspectral Imaging (PHI) filters will enable users to study the emission of polycyclic aromatic hydrocarbon (PAH). A large sample of galaxies will be observed with the polarimetric bands of PRIMAger, allowing unique statistical information for galaxies to be harvested for the first time.
format Preprint
id arxiv_https___arxiv_org_abs_2509_17646
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle PRIMAger General Observer programs: a {\Large $π$}-sr Infrared Survey and other General Observer wide-field programs
Burgarella, Denis
Bethermin, Matthieu
Boselli, Alessandro
Donnelan, James
Dowell, Charles Darren
Lagache, Guilaine
Oliver, Seb
Dole, Herve
Astrophysics of Galaxies
The PRobe far-Infrared Mission for Astrophysics (PRIMA) is a cryogenically-cooled, far-infrared (far-IR) observatory expected to begin serving the astronomical community by early 2030. The mission features two advanced instruments: PRIMAger and FIRESS. PRIMAger will operate across the mid- to far-IR spectrum, covering wavelengths from approximately 25 to 260 $μ$m. It will offer hyperspectral imaging in medium resolution bands (R $\sim$ 8, using a linear variable filter) from 25 to 80 $μ$m, and broad band (R $\sim$ 4) photometric and polarimetric imaging in four bands spanning 80 to 260 $μ$m. The capabilities of PRIMAger will enable a broad range of unique scientific programs, accessible through General Observer (GO) projects. In this paper, we present and define a PRIMAger survey over 25\% of the sky, called $π$-IR survey. This survey would exploit PRIMAger's hyperspectral and polarimetric modes to collect data on about 8 $\times$ 10$^{6}$ galaxies to z $\sim$ 4. The R=8 spectral resolution of the PRIMAger Hyperspectral Imaging (PHI) filters will enable users to study the emission of polycyclic aromatic hydrocarbon (PAH). A large sample of galaxies will be observed with the polarimetric bands of PRIMAger, allowing unique statistical information for galaxies to be harvested for the first time.
title PRIMAger General Observer programs: a {\Large $π$}-sr Infrared Survey and other General Observer wide-field programs
topic Astrophysics of Galaxies
url https://arxiv.org/abs/2509.17646