Sofia Feltzing
Professor
The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation : Monthly Notices of the Royal Astronomical Society
Författare
Summary, in English
WEAVE, the new wide-field, massively multiplexed spectroscopic survey facility for the William Herschel Telescope, saw first light in late 2022. WEAVE comprises a new 2-deg field-of-view prime-focus corrector system, a nearly 1000-multiplex fibre positioner, 20 individually deployable ‘mini’ integral field units (IFUs), and a single large IFU. These fibre systems feed a dual-beam spectrograph covering the wavelength range 366–959 nm at R ∼ 5000, or two shorter ranges at R ∼ 20 000. After summarizing the design and implementation of WEAVE and its data systems, we present the organization, science drivers, and design of a five- to seven-year programme of eight individual surveys to: (i) study our Galaxy’s origins by completing Gaia’s phase-space information, providing metallicities to its limiting magnitude for ∼3 million stars and detailed abundances for ∼1.5 million brighter field and open-cluster stars; (ii) survey ∼0.4 million Galactic-plane OBA stars, young stellar objects, and nearby gas to understand the evolution of young stars and their environments; (iii) perform an extensive spectral survey of white dwarfs; (iv) survey ∼400 neutral-hydrogen-selected galaxies with the IFUs; (v) study properties and kinematics of stellar populations and ionized gas in z < 0.5 cluster galaxies; (vi) survey stellar populations and kinematics in ∼25 000 field galaxies at 0.3 ≲ z ≲ 0.7; (vii) study the cosmic evolution of accretion and star formation using >1 million spectra of LOFAR-selected radio sources; and (viii) trace structures using intergalactic/circumgalactic gas at z > 2. Finally, we describe the WEAVE Operational Rehearsals using the WEAVE Simulator. © 2023 The Author(s).
Avdelning/ar
- Astrofysik
- Geologiska institutionen
- eSSENCE: The e-Science Collaboration
Publiceringsår
2024
Språk
Engelska
Sidor
2688-2730
Publikation/Tidskrift/Serie
Monthly Notices of the Royal Astronomical Society
Volym
530
Issue
3
Dokumenttyp
Artikel i tidskrift
Förlag
Oxford University Press
Ämne
- Astronomy, Astrophysics and Cosmology
Nyckelord
- cosmology: observations
- galaxies: general
- Galaxy: general
- instrumentation: spectrographs
- stars: general
- surveys
- Cosmology
- Ionization of gases
- Kinematics
- Phase space methods
- Radio astronomy
- Spectrographs
- Supernovae
- White dwarfs
- Cosmology observations
- Galaxies general
- Instrumentation:spectrographs
- Integral Field Unit
- Spectroscopic surveys
- Stars: general
- Stellar populations
- Survey design
- Wide-field
- Galaxies
Aktiv
Published
ISBN/ISSN/Övrigt
- ISSN: 1365-2966