Galaxy main sequence and properties of low-mass Lyman- α emitters towards reionisation as viewed by VLT/MUSE and JWST/NIRCam

Context. Faint, star-forming galaxies are likely to play a dominant role in cosmic reionisation. Great strides have been made in recent years to characterise these populations at high redshifts ( z > 3). Now, for the first time, with JWST photometry beyond 1 μm in the rest frame, we can derive accurate stellar masses and position these galaxies on the galaxy main sequence. Aims. We seek to assess the place of 96 individual Lyman- α emitters (LAEs) selected behind the A2744 lensing cluster with MUSE IFU spectroscopy on the galaxy main sequence. We also compare the derived stellar masses to Lyman- α luminosities and equivalent widths to better quantify the relationship between the Lyman- α emission and the host galaxy. Methods. These 96 LAEs lie in the redshift range of 2.9