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Galaxy Evolution Studies with the &ITSPace IR Telescope for Cosmology and Astrophysics&IT (&ITSPICA&IT): The Power of IR Spectroscopy
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Number of Authors: 682017 (English)In: Publications Astronomical Society of Australia, ISSN 1323-3580, E-ISSN 1448-6083, Vol. 34, article id e057Article in journal (Refereed) Published
Abstract [en]

IR spectroscopy in the range 12-230 mu m with the SPace IR telescope for Cosmology and Astrophysics (SPICA) will reveal the physical processes governing the formation and evolution of galaxies and black holes through cosmic time, bridging the gap between the James Webb Space Telescope and the upcoming Extremely Large Telescopes at shorter wavelengths and the Atacama Large Millimeter Array at longer wavelengths. The SPICA, with its 2.5-m telescope actively cooled to below 8 K, will obtain the first spectroscopic determination, in the mid-IR rest-frame, of both the star-formation rate and black hole accretion rate histories of galaxies, reaching lookback times of 12 Gyr, for large statistically significant samples. Densities, temperatures, radiation fields, and gas-phase metallicities will be measured in dust-obscured galaxies and active galactic nuclei, sampling a large range in mass and luminosity, from faint local dwarf galaxies to luminous quasars in the distant Universe. Active galactic nuclei and starburst feedback and feeding mechanisms in distant galaxies will be uncovered through detailed measurements of molecular and atomic line profiles. The SPICA's large-area deep spectrophotometric surveys will provide mid-IR spectra and continuum fluxes for unbiased samples of tens of thousands of galaxies, out to redshifts of z similar to 6.

Place, publisher, year, edition, pages
2017. Vol. 34, article id e057
Keywords [en]
galaxies: active, galaxies: evolution, galaxies: starburst, infrared: galaxies, techniques: spectroscopic telescopes
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-152655DOI: 10.1017/pasa.2017.48ISI: 000419925000001OAI: oai:DiVA.org:su-152655DiVA, id: diva2:1182186
Available from: 2018-02-12 Created: 2018-02-12 Last updated: 2018-02-12Bibliographically approved

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Miniutti, G.Vallini, Liviavan der Tak, F.
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Nordic Institute for Theoretical Physics (Nordita)
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