Author

A. Traina

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Preprint Oct 2026

MARTA: A"little"black hole hidden in a clumpy, metal-poor galaxy at z~3.8

JWST has extended the search for accreting black holes into the high-redshift, low-mass regime. We report a low-mass black hole candidate in MARTA 3887, a clumpy, metal-poor galaxy at $z=3.7694$, combining deep JWST/NIRSpec spectroscopy, HST and JWST imaging, and archival VLT/MUSE data. We detect a broad H$\alpha$ comp...

M. Curti, B. Moreschini, E. Cataldi et al. · 0 citations

Preprint Oct 2026

A JWST View of Cosmic Star Formation from $z\sim0$ to 9 with Hydrogen Recombination Lines in the COSMOS and GOODS-N fields

We combine wide-area COSMOS-3D observations with deeper GOODS-N data from JWST/NIRCam F444W wide-field slitless spectroscopy to trace cosmic star formation over $z\sim0$--9. The observations cover approximately $0.33~\mathrm{deg}^2$ in COSMOS and $60.9~\mathrm{arcmin}^2$ in GOODS-N, with typical $3\sigma$ integrated li...

Shu-Qi Fu, Lin-Hua Jiang, Christopher J. Conselice et al. · 0 citations