The MUSE Hubble Ultra Deep Field Survey: XII. MgII emission and absorption in star-forming galaxies

Understand

The physical origin of the near-ultraviolet MgII emission remains an under-explored domain, contrary to more typical emission lines detected in the spectra of star-forming galaxies.

• We explore the nebular and physical properties for a sample of 381 galaxies between 0.70 < z < 2.34 drawn from the MUSE Hubble Ultra Deep Survey.
• The spectra of these galaxies show a wide variety of profiles of the MgII 2796,2803 resonant doublet, from absorption to emission.
• We present a study on the main drivers for the detection of MgII emission in galaxy spectra.