The MUSE-Wide survey: A first catalogue of 831 emission line galaxies - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Astronomy and Astrophysics - A&A Year : 2017

The MUSE-Wide survey: A first catalogue of 831 emission line galaxies

Edmund Christian Herenz
  • Function : Author
Tanya Urrutia
  • Function : Author
Lutz Wisotzki
  • Function : Author
Josephine Kerutt
  • Function : Author
Rikke Saust
  • Function : Author
Maria Werhahn
  • Function : Author
Kasper Borello Schmidt
  • Function : Author
Joseph Caruana
  • Function : Author
Catrina Diener
  • Function : Author
Jarle Brinchmann
  • Function : Author
Joop Schaye
  • Function : Author
Michael Maseda
  • Function : Author
Peter M. Weilbacher
  • Function : Author


We present a first instalment of the MUSE-Wide survey, covering an area of 22.2 arcmin2 (corresponding to 20% of the final survey) in the CANDELS/Deep area of the Chandra Deep Field South. We use the MUSE integral field spectrograph at the ESO VLT to conduct a full-area spectroscopic mapping at a depth of 1 h exposure time per 1 arcmin2 pointing. We searched for compact emission line objects using our newly developed LSDCat software based on a 3D matched filtering approach, followed by interactive classification and redshift measurement of the sources. Our catalogue contains 831 distinct emission line galaxies with redshifts ranging from 0.04 to 6. Roughly one third (237) of the emission line sources are Lyman α emitting galaxies with 3 < z < 6, only four of which had previously measured spectroscopic redshifts. At lower redshifts 351 galaxies are detected primarily by their [O II] emission line (0.3 ≲ z ≲ 1.5), 189 by their [O III] line (0.21 ≲ z ≲ 0.85), and 46 by their Hα line (0.04 ≲ z ≲ 0.42). Comparing our spectroscopic redshifts to photometric redshift estimates from the literature, we find excellent agreement for z < 1.5 with a median Δz of only 4 × 10-4 and an outlier rate of 6%, however a significant systematic offset of Δz = 0.26 and an outlier rate of 23% for Lyα emitters at z > 3. Together with the catalogue we also release 1D PSF-weighted extracted spectra and small 3D datacubes centred on each of the 831 sources.

Based on observations collected at the European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme 094.A-0205.Data products are available via and at the CDS via anonymous ftp to ( or via .

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Dates and versions

insu-03710614 , version 1 (01-07-2022)



Edmund Christian Herenz, Tanya Urrutia, Lutz Wisotzki, Josephine Kerutt, Rikke Saust, et al.. The MUSE-Wide survey: A first catalogue of 831 emission line galaxies. Astronomy and Astrophysics - A&A, 2017, 606, ⟨10.1051/0004-6361/201731055⟩. ⟨insu-03710614⟩
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