Dwarf satellites of high-z Lyman Break Galaxies: a free lunch for JWST.

We show that the James Webb Space Telescope will be able to detect dwarf satellites of high-$z$ Lyman Break Galaxies (LBGs). To this aim, we use cosmological simulations following the evolution of a typical $M_\star\simeq10^{10}\rm M_\odot$ LBG up to $z\simeq6$, and analyse the observational properties of its five satellite dwarf galaxies ($10^7{\rm M_\odot}

Keywords:

• Dwarf galaxy
• Spectral line
• Spectral density
• star
• Astrophysics
• James Webb Space Telescope
• Stars
• Physics
• Satellite
• Galaxy

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