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
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) |
access all versions, variants, and formats of this works (eg, pre-prints)
Crossref Metadata (via API)
Worldcat
SHERPA/RoMEO (journal policies)
wikidata.org
CORE.ac.uk
Semantic Scholar
Google Scholar