| Autor: |
Le Fèvre, O, Béthermin, M, Faisst, A, Jones, GC, Capak, P, Cassata, P, Silverman, JD, Schaerer, D, Yan, L, Amorin, R, Bardelli, S, Boquien, M, Cimatti, A, Dessauges-Zavadsky, M, Giavalisco, M, Hathi, NP, Fudamoto, Y, Fujimoto, S, Ginolfi, M, Gruppioni, C, Hemmati, S, Ibar, E, Koekemoer, A, Khusanova, Y, Lagache, G, Lemaux, BC, Loiacono, F, Maiolino, R, Mancini, C, Narayanan, D, Morselli, L, Méndez-Hernàndez, H, Oesch, PA, Pozzi, F, Romano, M, Riechers, D, Scoville, N, Talia, M, Tasca, LAM, Thomas, R, Toft, S, Vallini, L, Vergani, D, Walter, F, Zamorani, G, Zucca, E |
| Přispěvatelé: |
Jones, Gareth [0000-0002-0267-9024], Maiolino, Roberto [0000-0002-4985-3819], Apollo - University of Cambridge Repository |
| Rok vydání: |
2021 |
| Předmět: |
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| DOI: |
10.17863/cam.63572 |
| Popis: |
The ALMA-ALPINE [CII] survey is aimed at characterizing the properties of a sample of normal star-forming galaxies (SFGs). The ALMA Large Program to INvestigate (ALPINE) features 118 galaxies observed in the [CII]-158 μm line and far infrared (FIR) continuum emission during the period of rapid mass assembly, right after the end of the HI reionization, at redshifts of 4 < z < 6. We present the survey science goals, the observational strategy, and the sample selection of the 118 galaxies observed with ALMA, with an average beam minor axis of about 0.85″, or ∼5 kpc at the median redshift of the survey. The properties of the sample are described, including spectroscopic redshifts derived from the UV-rest frame, stellar masses, and star-formation rates obtained from a spectral energy distribution (SED) fitting. The observed properties derived from the ALMA data are presented and discussed in terms of the overall detection rate in [CII] and FIR continuum, with the observed signal-to-noise distribution. The sample is representative of the SFG population in the main sequence at these redshifts. The overall detection rate in [CII] is 64% for a signal-to-noise ratio (S/N) threshold larger than 3.5 corresponding to a 95% purity (40% detection rate for S/N > 5). Based on a visual inspection of the [CII] data cubes together with the large wealth of ancillary data, we find a surprisingly wide range of galaxy types, including 40% that are mergers, 20% extended and dispersion-dominated, 13% compact, and 11% rotating discs, with the remaining 16% too faint to be classified. This diversity indicates that a wide array of physical processes must be at work at this epoch, first and foremost, those of galaxy mergers. This paper sets a reference sample for the gas distribution in normal SFGs at 4 < z < 6, a key epoch in galaxy assembly, which is ideally suited for studies with future facilities, such as the James Webb Space Telescope (JWST) and the Extremely Large Telescopes (ELTs). |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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