Tag: #galaxies

Possible detection of cold molecular gas in REBELS-25, 700 million years after the Big Bang

Astronomers report a possible low-J CO detection in galaxy REBELS-25 at z=7.31, implying a huge cold molecular gas reservoir 700 million years after the Big Bang.

#astronomy, #galaxies, #cosmology, #moleculargas

JADES Finds Candidate Galaxy Overdensity at z ≈ 10.5 in the First 500 Million Years

JADES reports a candidate concentration of 18 galaxies at z≈10.5 in GOODS‑S, an unusually dense patch in the first 500 Myr that needs spectroscopic confirmation.

#jwst, #jades, #galaxies, #cosmicdawn

JADES releases uniformly modeled catalog of about 500,000 galaxies in GOODS deep fields

JADES DR5 offers a uniform Bayesian catalog of stellar mass, SFR, metallicity and AGN contribution for about 500,000 sources in GOODS-N and GOODS-S.

#jwst, #jades, #galaxies, #astronomy

Preprint: DESI spectra identify 10,000+ candidate cold gas inflows into galaxies

An arXiv preprint using DESI DR2 spectra reports more than 10,000 candidate cold-gas inflows in z<0.6 galaxies, offering a large but preliminary sample.

#astronomy, #desi, #galaxies, #arxiv

JWST and Lensing Reveal Abundant Ultra-Faint Galaxies, Bolstering the Case They Powered Reionization

JWST + lensing study finds abundant ultra-faint galaxies at z≈6–9 with no turnover down to MUV≈−12, bolstering the case that faint galaxies powered reionization.

#astronomy, #jwst, #reionization, #galaxies

Wide JWST Survey Finds Fewer Galaxies at z≈10, Bringing Counts Closer to Spectroscopy

A 36-sightline JWST NIRCam survey reports lower galaxy counts near redshift 10 than earlier photometric studies, aligning better with spectroscopic results.

#jwst, #astronomy, #galaxies, #cosmology

JWST data suggest powerful galactic wind 300 million years after the Big Bang

JWST spectra show extended CIII] around a z≈14 galaxy, implying strong, metal‑rich outflows moved gas 300 million years after the Big Bang.

#astronomy, #jwst, #galaxies, #cosmicdawn