The MUSE-Wide survey: a measurement of the Ly alpha emitting fraction among z > 3 galaxies

We present a measurement of the fraction of Lyman α (Ly α) emitters ( X Ly α ) amongst HST continuum-selected galaxies at 3 <  z  < 6 with the Multi-Unit Spectroscopic Explorer (MUSE) on the VLT. Making use of the first 24 MUSE-Wide pointings in GOODS-South, each having an integration...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2018, Vol.473 (1), p.30
Main Authors: Caruana, Joseph, Wisotzki, Lutz, Herenz, Edmund Christian, Kerutt, Josephine, Urrutia, Tanya, Schmidt, Kasper Borello, Bouwens, Rychard, Brinchmann, Jarle, Cantalupo, Sebastiano, Carollo, Marcella, Diener, Catrina, Drake, Alyssa, Garel, Thibault, Marino, Raffaella Anna, Richard, Johan, Saust, Rikke, Schaye, Joop, Verhamme, Anne
Format: Article
Language:English
Subjects:
galaxies: high-redshift
galaxies: star formation
galaxies: statistics
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Summary:We present a measurement of the fraction of Lyman α (Ly α) emitters ( X Ly α ) amongst HST continuum-selected galaxies at 3 <  z  < 6 with the Multi-Unit Spectroscopic Explorer (MUSE) on the VLT. Making use of the first 24 MUSE-Wide pointings in GOODS-South, each having an integration time of 1 h, we detect 100 Ly α emitters and find X Ly α ≳ 0.5 for most of the redshift range covered, with 29 per cent of the Ly α sample exhibiting rest equivalent widths (rest-EWs) ≤ 15 Å. Adopting a range of rest-EW cuts (0–75 Å), we find no evidence of a dependence of X Ly α on either redshift or ultraviolet luminosity.
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/stx2307