The MUSE-Wide Survey: survey description and first data release
| Autor: | Johan Richard, Davor Krajnović, Harry Enke, Joakim Klar, J. Kerutt, Peter M. Weilbacher, R. Saust, Lutz Wisotzki, Michael V. Maseda, C. Diener, Kasper B. Schmidt, Edmund Christian Herenz, Matthias Steinmetz, Jarle Brinchmann, Joseph Caruana, Maria Werhahn, Tanya Urrutia, Leindert Boogaard, Roland Bacon, Themiya Nanayakkara |
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| Přispěvatelé: | Centre de Recherche Astrophysique de Lyon (CRAL), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Population
galaxies: active FOS: Physical sciences Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics 01 natural sciences Luminosity surveys 0103 physical sciences Emission spectrum education 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics Physics education.field_of_study [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] 010308 nuclear & particles physics Astronomy and Astrophysics galaxies: general Astrophysics - Astrophysics of Galaxies Galaxy Redshift 13. Climate action Space and Planetary Science [SDU]Sciences of the Universe [physics] Astrophysics of Galaxies (astro-ph.GA) Magnitude (astronomy) Chandra Deep Field South galaxies: distances and redshifts Data reduction |
| Zdroj: | Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, 2019, 624, ⟨10.1051/0004-6361/201834656⟩ Astronomy and Astrophysics (0004-6361), 624, A141 Astronomy & Astrophysics |
| ISSN: | 0004-6361 |
| Popis: | We present the MUSE-Wide survey, a blind, 3D spectroscopic survey in the CANDELS/GOODS-S and CANDELS/COSMOS regions. Each MUSE-Wide pointing has a depth of 1 hour and hence targets more extreme and more luminous objects over 10 times the area of the MUSE-Deep fields (Bacon et al. 2017). The legacy value of MUSE-Wide lies in providing "spectroscopy of everything" without photometric pre-selection. We describe the data reduction, post-processing and PSF characterization of the first 44 CANDELS/GOODS-S MUSE-Wide pointings released with this publication. Using a 3D matched filtering approach we detected 1,602 emission line sources, including 479 Lyman-$\alpha$ (Lya) emitting galaxies with redshifts $2.9 \lesssim z \lesssim 6.3$. We cross-match the emission line sources to existing photometric catalogs, finding almost complete agreement in redshifts and stellar masses for our low redshift (z < 1.5) emitters. At high redshift, we only find ~55% matches to photometric catalogs. We encounter a higher outlier rate and a systematic offset of $\Delta$z$\simeq$0.2 when comparing our MUSE redshifts with photometric redshifts. Cross-matching the emission line sources with X-ray catalogs from the Chandra Deep Field South, we find 127 matches, including 10 objects with no prior spectroscopic identification. Stacking X-ray images centered on our Lya emitters yielded no signal; the Lya population is not dominated by even low luminosity AGN. A total of 9,205 photometrically selected objects from the CANDELS survey lie in the MUSE-Wide footprint, which we provide optimally extracted 1D spectra of. We are able to determine the spectroscopic redshift of 98% of 772 photometrically selected galaxies brighter than 24th F775W magnitude. All the data in the first data release - datacubes, catalogs, extracted spectra, maps - are available on the website https://musewide.aip.de. [abridged] Comment: 25 pages 15+1 figures. Accepted, A&A. Comments welcome |
| Databáze: | OpenAIRE |
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