Origins Space Telescope: Predictions for far-IR spectroscopic surveys release_gtlchyef6rcz3cawsl4fiwtywe

by Matteo Bonato, Gianfranco De Zotti, David Leisawitz, Mattia Negrello, Marcella Massardi, Ivano Baronchelli, Zhen-Yi Cai, Charles M. Bradford, Alexandra Pope, Eric J. Murphy, Lee Armus, Asantha Cooray

Published in Publications Astronomical Society of Australia by Cambridge University Press (CUP).

2019   Volume 36

Abstract

<jats:title>Abstract</jats:title>We illustrate the extraordinary potential of the (far-IR) Origins Survey Spectrometer (OSS) on board the Origins Space Telescope (OST) to address a variety of open issues on the co-evolution of galaxies and AGNs. We present predictions for blind surveys, each of 1000 h, with different mapped areas (a shallow survey covering an area of 10 deg<jats:sup>2</jats:sup> and a deep survey of 1 deg<jats:sup>2</jats:sup>) and two different concepts of the OST/OSS: with a 5.9 m telescope (Concept 2, our reference configuration) and with a 9.1 m telescope (Concept 1, previous configuration). In 1 000 h, surveys with the reference concept will detect from ∼1.9×10<jats:sup>6</jats:sup> to ∼8.7×10<jats:sup>6</jats:sup> lines from ∼4.8×10<jats:sup>5</jats:sup> to 2.7×10<jats:sup>6</jats:sup> star-forming galaxies and from ∼1.4×10<jats:sup>4</jats:sup> to ∼3.8×10<jats:sup>4</jats:sup> lines from ∼1.3×10<jats:sup>4</jats:sup> to 3.5×10<jats:sup>4</jats:sup> AGNs. The shallow survey will detect substantially more sources than the deep one; the advantage of the latter in pushing detections to lower luminosities/higher redshifts turns out to be quite limited. The OST/OSS will reach, in the same observing time, line fluxes more than one order of magnitude fainter than the SPICA/SMI and will cover a much broader redshift range. In particular it will detect tens of thousands of galaxies at <jats:italic>z</jats:italic> ≥ 5, beyond the reach of that instrument. The polycyclic aromatic hydrocarbons lines are potentially bright enough to allow the detection of hundreds of thousands of star-forming galaxies up to <jats:italic>z</jats:italic> ∼ 8.5, i.e. all the way through the reionisation epoch. The proposed surveys will allow us to explore the galaxy–AGN co-evolution up to <jats:italic>z</jats:italic> ∼ 5.5−6 with very good statistics. OST Concept 1 does not offer significant advantages for the scientific goals presented here.
In application/xml+jats format

Archived Files and Locations

application/pdf   2.1 MB
file_okm2jqief5ef3aomcn43eqvjim
application/pdf   1.9 MB
file_igcjee23sjdg3dbeltppmo5evm
authors.library.caltech.edu (web)
web.archive.org (webarchive)
Read Archived PDF
Preserved and Accessible
Type  article-journal
Stage   published
Date   2019-04-24
Language   en ?
DOI  10.1017/pasa.2019.8
PubMed  32832939
PMC  PMC7440398
Container Metadata
Not in DOAJ
In Keepers Registry
ISSN-L:  1323-3580
Work Entity
access all versions, variants, and formats of this works (eg, pre-prints)
Catalog Record
Revision: e75b00aa-6a66-4c85-99d4-76a839dc0d15
API URL: JSON