ESO: MUSE Probes Uncharted Depths of HUDF

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ESO: MUSE Probes Uncharted Depths of HUDF

Postby bystander » Wed Nov 29, 2017 9:36 pm

MUSE Probes Uncharted Depths of Hubble Ultra Deep Field
ESO Science Release | VLT | MUSE | HUDF | 2017 Nov 29

Deepest ever spectroscopic survey completed

Astronomers using the MUSE instrument on ESO’s Very Large Telescope in Chile have conducted the deepest spectroscopic survey ever. They focused on the Hubble Ultra Deep Field, measuring distances and properties of 1600 very faint galaxies including 72 galaxies that have never been detected before, even by Hubble itself. This groundbreaking dataset has already resulted in 10 science papers that are being published in a special issue of Astronomy & Astrophysics. This wealth of new information is giving astronomers insight into star formation in the early Universe, and allows them to study the motions and other properties of early galaxies — made possible by MUSE’s unique spectroscopic capabilities.

The MUSE HUDF Survey team, led by Roland Bacon of the Centre de recherche astrophysique de Lyon (CNRS/Université Claude Bernard Lyon 1/ENS de Lyon), France, used MUSE (Multi Unit Spectroscopic Explorer) to observe the Hubble Ultra Deep Field (heic0406), a much-studied patch of the southern constellation of Fornax (The Furnace). This resulted in the deepest spectroscopic observations ever made; precise spectroscopic information was measured for 1600 galaxies, ten times as many galaxies as has been painstakingly obtained in this field over the last decade by ground-based telescopes.

The original HUDF images were pioneering deep-field observations with the NASA/ESA Hubble Space Telescope published in 2004. They probed more deeply than ever before and revealed a menagerie of galaxies dating back to less than a billion years after the Big Bang. The area was subsequently observed many times by Hubble and other telescopes, resulting in the deepest view of the Universe to date [1]. Now, despite the depth of the Hubble observations, MUSE has — among many other results — revealed 72 galaxies never seen before in this very tiny area of the sky. ...

The MUSE Hubble Ultra Deep Field Survey - MUSE HUDF Collaboration

  1. Survey description, data reduction and source detection - Roland Bacon et al
  2. Spectroscopic redshifts and comparisons to color selections of high-redshift galaxies - Hanae Inami et al
  3. Testing photometric redshifts to 30th magnitude - Jarle Brinchmann et al
  4. Global properties of C[III] emitters - Michael V. Maseda et al
  5. Spatially resolved stellar kinematics of galaxies at redshift 0.2 ≤ z ≤ 0.8 - Adrien Guerou et al
  6. The faint-end of the Lyα luminosity function at 2.91 < z < 6.64 and implications for reionisation - Alyssa. B. Drake et al
  7. Fe II* emission in star-forming galaxies - Hayley Finley et al
  8. Extended Lyman-α haloes around high-z star-forming galaxies - Floriane Leclercq et al
  9. Evolution of galaxy merger fraction since z ≈ 6 - E. Ventou et al
  10. Lyα equivalent widths at 2.9 < z < 6.6 - Takuya Hashimoto et al

The MUSE Hubble Ultra Deep Field Survey
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