Lyα emitters (LAEs) may represent an important galaxy population in the low-mass regime. We present our deep narrowband imaging surveys in the COSMOS and ECDF-S fields and study the properties of LAEs at z?=?2.23?±?0.03. The narrowband surveys conducted at the Magellan II telescope allow us to obtain a sample of 452 LAEs, reaching a 5σ limiting magnitude of ~26 mag. Our Lyα luminosity functions extend to L(Lyα) =1041.8 erg s?1 with a steep faint-end slope. Using multiwavelength ancillary data, especially the deep Spitzer/IRAC 3.6 and 4.5 μm photometric data, we obtained reliable stellar mass estimates for 130 IRAC-detected LAEs, spanning a range of 8?M /M ⊙)? and the rest-frame ultraviolet emission indicates a median star formation rate (SFR) of log (SFR/M ⊙ yr?1)?=??0.14?±?0.35. There are six LAEs detected by the Spitzer/MIPS 24 μm or even Herschel far-infrared observations. Taking into account the six mid-IR/far-IR-detected LAEs, our LAEs cover a wide range in the SFR (1 M ⊙ yr?1?M ⊙ yr?1). Although LAEs as a population are diverse in their stellar properties, they are mostly low-mass star-forming galaxies and follow the star formation main-sequence relations or their extrapolations to the low-mass end, implying a normal star-forming nature of LAEs. The clustering analysis indicates that our LAEs reside in dark matter halos with , suggesting that they are progenitors of local LMC-like galaxies.
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