Fernandez-Ontiveros, J. A. and Matsuura, Mikako ![]() |
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Abstract
The physical processes driving the chemical evolution of galaxies in the last 11Gyr cannot be understood without directly probing the dust-obscured phase of star-forming galaxies and active galactic nuclei. This phase, hidden to optical tracers, represents the bulk of the star formation and black hole accretion activity in galaxies at 1 < z < 3. Spectroscopic observations with a cryogenic infrared (IR) observatory like SPICA, with its 2.5m mirror actively cooled down to 8K, will be able to peer through the dust-obscured regions of galaxies and will be sensitive enough to access the rest-frame mid- to far-IR range in galaxies at high-z. This wavelength range contains a unique suite of spectral lines and dust features that can be used to determine the abundances of heavy elements and the dust composition, providing tracers with a feeble response to both extinction and temperature. In this work we investigate how SPICA observations could be exploited to understand key aspects in the chemical evolution of galaxies: the assembly of nearby galaxies based on the spatial distribution of heavy element abundances, the global content of metals in galaxies reaching the knee of the luminosity function up to z 3, and the dust composition of galaxies at high-z. The possible synergies with facilities available in the late 2020s are also discussed.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Physics and Astronomy |
Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
Publisher: | Cambridge University Press |
ISSN: | 1323-3580 |
Date of First Compliant Deposit: | 15 September 2017 |
Date of Acceptance: | 14 September 2017 |
Last Modified: | 18 Nov 2024 08:15 |
URI: | https://orca.cardiff.ac.uk/id/eprint/104683 |
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