MUSE Spectroscopic Identifications of Ultra-faint Emission Line Galaxies with M_UV ∼ −15
- Maseda, Michael, V
- Bacon, Roland
- Franx, Marijn
- Brinchmann, Jarle
- Schaye, Joop
- Boogaard, Leindert
- Bouche, Nicolas
- Bouwens, Rychard, J
- Cantalupo, Sebastiano
- Contini, Thierry
- Hashimoto, Takuya
- Inami, Hanae
- Marino, Raffaella, A
- Muzahid, Sowgat
- Nanayakkara, Themiya
- Richard, Johan
- Schmidt, Kasper, B
- Verhamme, Anne
- Wisotzki, Lutz
DOIAbstract
International audienceUsing an ultra-deep blind survey with the MUSE integral field spectrograph on the European Southern Observatory Very Large Telescope, we obtain spectroscopic redshifts to a depth never before explored: galaxies with observed magnitudes m AB 30-32. Specifically, we detect objects via Lyα emission at 2.9<z<6.7 without individual continuum counterparts in areas covered by the deepest optical/near-infrared imaging taken by the Hubble Space Telescope, the Hubble Ultra Deep Field. In total, we find 102 such objects in 9 square arcminutes at these redshifts. Detailed stacking analyses confirm the Lyα emission as well as the 1216 Å breaks and faint ultraviolet continua (M UV ∼−15). This makes them the faintest spectroscopicall...
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