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SIGNALS: I. Survey description
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Number of Authors: 642019 (English)In: Monthly notices of the Royal Astronomical Society, ISSN 0035-8711, E-ISSN 1365-2966, Vol. 489, no 4, p. 5530-5546Article in journal (Refereed) Published
Abstract [en]

SIGNALS, the Star formation, Ionized Gas, and Nebular Abundances Legacy Survey, is a large observing programme designed to investigate massive star formation and HII regions in a sample of local extended galaxies. The programme will use the imaging Fourier transform spectrograph SITELLE at the Canada-France-Hawaii Telescope. Over 355 h (54.7 nights) have been allocated beginning in fall 2018 for eight consecutive semesters. Once completed, SIGNALS will provide a statistically reliable laboratory to investigate massive star formation, including over 50 000 resolved HII regions: the largest, most complete, and homogeneous data base of spectroscopically and spatially resolved extragalactic HII regions ever assembled. For each field observed, three datacubes covering the spectral bands of the filters SN1 (363386 nm), SN2 (482-513 nm), and SN3 (647-685 nm) are gathered. The spectral resolution selected for each spectral band is 1000, 1000, and 5000, respectively. As defined, the project sample will facilitate the study of small-scale nebular physics and many other phenomena linked to star formation at a mean spatial resolution of similar to 20 pc. This survey also has considerable legacy value for additional topics, including planetary nebulae, diffuse ionized gas, and supernova remnants. The purpose of this paper is to present a general outlook of the survey, notably the observing strategy, galaxy sample, and science requirements.

Place, publisher, year, edition, pages
2019. Vol. 489, no 4, p. 5530-5546
Keywords [en]
surveys, HII regions, galaxies: star formation
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-175744DOI: 10.1093/mnras/stz2455ISI: 000489302400079OAI: oai:DiVA.org:su-175744DiVA, id: diva2:1372774
Available from: 2019-11-25 Created: 2019-11-25 Last updated: 2019-11-25Bibliographically approved

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Adamo, AngelaDella Bruna, LorenzaGrasha, K.Lianou, S.Morisset, C.Sánchez-Menguiano, L.Vale Asari, N.
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Department of AstronomyThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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