Papers › Lyman-α Emitters in the context of hierarchical galaxy formation: predictions for...
Lyman-α Emitters in the context of hierarchical galaxy formation: predictions for VLT/MUSE surveys
Thibault Garel, Bruno Guiderdoni, Jérémy Blaizot
The archive published only this paper's code-link row. Authors, date and abstract are from arXiv's metadata (CC0), read from the Kaggle arXiv metadata snapshot of 2026-09-12 where its title matched the archive's; the title is the archive's.
The VLT Multi Unit Spectroscopic Explorer (MUSE) integral-field spectrograph can detect Ly\alpha{} emitters (LAE) in the redshift range 2.8 ≲z ≲6.7 in a homogeneous way. Ongoing MUSE surveys will notably probe faint Ly\alpha{} sources that are usually missed by current narrow-band surveys. We provide quantitative predictions for a typical wedding-cake observing strategy with MUSE based on mock catalogs generated with a semi-analytic model of galaxy formation coupled to numerical Ly\alpha{} radiation transfer models in gas outflows. We expect ≈ 1500 bright LAEs (F_(Lyα) ≳ 10⁻¹⁷ erg s⁻¹ cm⁻²) in a typical Shallow Field (SF) survey carried over ≈ 100 arcmin², and ≈ 2,000 sources as faint as 10⁻¹⁸ erg s⁻¹ cm⁻² in a Medium-Deep Field (MDF) survey over 10 arcmin². In a typical Deep Field (DF) survey of 1 arcmin², we predict that ≈ 500 extremely faint LAEs (F_(Lyα) ≳ 4 ×10⁻¹⁹ erg s⁻¹ cm⁻²) will be found. Our results suggest that faint Ly\alpha{} sources contribute significantly to the cosmic Ly\alpha{} luminosity and SFR budget. While the host halos of bright LAEs at z ≈ 3 and 6 have descendants with median masses of 2 ×10¹² and 5 ×10¹³ M_⊙ respectively, the faintest sources detectable by MUSE at these redshifts are predicted to reside in halos which evolve into typical sub-L^* and L^* galaxy halos at z = 0. We expect typical DF and MDF surveys to uncover the building blocks of Milky Way-like objects, even probing the bulk of the stellar mass content of LAEs located in their progenitor halos at z ≈ 3.
Code
Repository list and official/mentioned flags are the archive's, frozen 2025-07-28. Reachability, where shown, is from one Syntology probe window (2026-09-16 to 2026-09-18); repositories not probed show nothing. GitHub stars are not tracked.
Code Syntology ran Syntology
Not run by Syntology. Nothing on this page verifies that the listed code works.
Results from the paper archive 2025-07-28
No leaderboard rows for this paper in the archive.
Report a problem or propose a change · a person checks every report against the paper or source before anything changes; decisions are listed on /corrections