Abstract Until now, our knowledge of the extragalactic universe at mid-infrared (mid-IR) wavelengths (>5 μ m) was limited to rare active galactic nuclei and brightest normal galaxies up z ∼ 3. The advent JWST with its Mid-Infrared Instrument (MIRI) will revolutionize ability mid-IR regime as a key wavelength domain probe high- universe. In this work we present first study MIRI 7.7 m sources ...

Abstract JWST’s Early Release Observations of the lensing cluster SMACS J0723.3–7327 have given an unprecedented spectroscopic look into high-redshift universe. These observations reveal five galaxies at z > 5. All detectable [O iii ] λ 4363 line emission, indicating that these high temperatures and low metallicities they are highly star-forming. In recent work, been studied using various te...

We present the first spatially resolved measurements of galaxy properties in JWST ERO SMACS0723 field. perform a comprehensive analysis five $5<z<9$ galaxies with spectroscopic redshifts from NIRSpec observations. SED fitting BAGPIPES, using NIRCam imaging 6 bands spanning wavelength range $0.8-5\mu$m. produce maps inferred physical by novel approach study high redshift galaxies. This method al...

Abstract We present early results regarding the morphological and structural properties of galaxies seen with James Webb Space Telescope (JWST) at z &gt; 3 in Early Release Observations toward SMACS 0723 cluster field. Using JWST we investigate, for first time, optical morphologies a significant number accurate photometric redshifts this field to determine form galaxy structure relatively unive...

We consider the variational problem of maximizing the packing density on some finite dimensional set of almost periodic sphere packings. We show that the maximal density on this manifold is obtained by periodic packings. Since the density is a continuous, but a nondifferentiable function on this manifold, the variational problem is related to number theoretical questions. Every sphere packing i...

We present rest-frame optical emission-line flux ratio measurements for five $z>5$ galaxies observed by the JWST Near-Infared Spectrograph (NIRSpec) in SMACS 0723 Early Release Observations. add several quality-control and post-processing steps to NIRSpec pipeline reduction products order ensure reliable relative calibration of emission lines that are closely separated wavelength, despite uncer...