A5093701175- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Star Formation Studies
- Astro and Planetary Science
- Nuclear physics research studies
- Gamma-ray bursts and supernovae
- High-pressure geophysics and materials
Johns Hopkins University
2024
Abstract The Cosmic Gems arc is among the brightest and highly magnified galaxies observed at redshift z ≈ 10.2 (ref. 1 ). However, it an intrinsically ultraviolet faint galaxy, in range of those now thought to drive reionization Universe 2–4 . Hitherto smallest features resolved a galaxy comparable are between few hundreds tens parsecs (pc) 5,6 Here we report JWST observations Gems. light into five star clusters located region smaller than 70 pc. They exhibit minimal dust attenuation low...
Abstract We present JWST/NIRSpec high-resolution G395H/F290LP spectroscopy of MACS0647−JD, a gravitationally lensed galaxy merger at z = 10.167. The new spectroscopy, which is acquired for the two images (JD1 and JD2), detects resolves emission lines in rest-frame ultraviolet blue optical, including resolved [O ii ] λ 3726, 3729 doublet, [Ne iii 3870, He i 3890, H δ , γ 4363. This first observation doublet > 8. measure line flux ratio 3729/ 3726 0.9 ± 0.3, corresponds to an estimated...
Young galaxies, potentially responsible for the last major phase-transition of Universe, appear brighter than expected and go through rapid bursty phases where copious amounts ionizing radiation feedback are produced. However, stellar components majority these reionization--era galaxies remain spatially unresolved. In this letter, we report direct discovery young massive star clusters in strongly lensed galaxy SPT0615-JD1 (dubbed Cosmic Gems arc) at redshift $z\sim10.2_{-0.2}^{+0.2}$ when...
We present JWST/NIRSpec high-resolution spectroscopy G395H/F290LP of MACS0647-JD, a gravitationally lensed galaxy merger at $z=10.167$. The new spectroscopy, which is acquired for the two images (JD1 and JD2), detects resolves emission lines in rest-frame ultraviolet (UV) blue optical, including resolved [OII]3726,3729 doublet, [NeIII]3870, [HeI]3890, H$\delta$, H$\gamma$, [OIII]4363. This first observation doublet $z>8$. measure line flux ratio [OII]3729/3726 $= 0.9 \pm 0.3$, corresponds to...
We present a detailed study of the gas and galaxy properties cluster PSZ2 G282.28+49.94 detected in Planck all-sky survey. The intracluster medium (ICM) this object at z=0.56 exhibits cometary-like shape. Combining Chandra TNG observations, we characterised spatially resolved thermodynamical spatial velocity distribution 73 members. structure is quite complex with an elongated core region containing two brightest galaxies one dense group to south-east. Since there no difference between...
We present a detailed study of the gas and galaxy properties cluster PSZ2 G282.28+49.94 detected in Planck all-sky survey. The intracluster medium (ICM) this object at z=0.56 exhibits cometary-like shape. Combining Chandra TNG observations, we characterised spatially resolved thermodynamical spatial velocity distribution 73 members. structure is quite complex with an elongated core region containing two brightest galaxies one dense group to south-east. Since there no difference between...