Examinando por Autor "D'Eugenio, Francesco"

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Accelerated quenching and chemical enhancement of massive galaxies in a z ≈ 4 gas-rich halo
(Nature Astronomy, 2025-07-21) Pérez-González, Pablo G.; D'Eugenio, Francesco; Rodriguez Del Pino, Bruno; Perna, Michele; Übler, Hannah; Maiolino, Roberto; Arribas, Santiago; Cresci, Giovanni; Lamperti, Isabella; Bunker, Andrew J.; Carniani, Stefano; Willott, Chris J.; Böker, Torsten; Parlanti, Eleonora; Scholtz, Jan; Venturi, Giacomo; Barro, Guillermo; Costantin, Luca; Martin-Navarro, Ignacio; Dunlop, James S.; Magee, Daniel; Ministerio de Ciencia e Innovación (MICINN); Agencia Estatal de Investigación (España); European Commission; Science and Technology Facilities Council (STFC); European Research Council (ERC); Istituto Nazionale di Astrofisica (INAF); Fundación La Caixa
Stars in galaxies form when baryons radiatively cool down and fall into gravitational wells whose mass is dominated by dark matter. Eventually, star formation quenches as gas is depleted and/or perturbed by feedback processes, no longer being able to collapse and condense. We report the first spatially resolved spectroscopic observations, using the JWST/NIRSpec IFU, of a massive, completely quiescent galaxy (Jekyll) and its neighborhood at $z=3.714$, when the Universe age was 10% of today's. Jekyll resides in a massive dark matter halo (with mass M$_\mathrm{DM}>10^{12}$ M$_\odot$) and forms a galaxy pair with Hyde, which shows very intense dust-enshrouded star formation (star formation rate $\sim300$ M$_\odot$yr$^{-1}$). We find large amounts of kinematically perturbed ionized and neutral gas in the circumgalactic medium around the pair. Despite this large gas reservoir, Jekyll, which formed $10^{11}$ M$_\odot$ in stars and chemically enriched early (first billion years of the Universe) and quickly (200-300 Myr), has remained quiescent for over 500 Myr. The properties of the gas found around the two galaxies are consistent with intense, AGN-induced photoionization, or intense shocks. However, with the current data no obscured or unobscured AGN is detected in the central galaxy (Jekyll) nor in the very active and dust rich star-forming galaxy (Hyde).
Acceso Abierto
JADES Data Release 3: NIRSpec/Microshutter Assembly Spectroscopy for 4000 Galaxies in the GOODS Fields
(American Astronomical Society, 2025-02-14) D'Eugenio, Francesco; Cameron, Alex J.; Scholtz, Jan; Carniani, Stefano; Willott, Chris J.; Curtis-Lake, Emma; Bunker, Andrew J.; Parlanti, Eleonora; Maiolino, Roberto; Willmer, Christopher N. A.; Jakobsen, Peter; Robertson, Brant; Johnson, Benjamin D.; Tacchella, Sandro; Cargile, Phillip; Rawle, T. D.; Arribas, Santiago; Chevallard, Jacopo; Curti, Mirko; Egami, E.; Eisenstein, Daniel; Kumari, Nimisha; Looser, Tobias J.; Rieke, Marcia; Rodriguez Del Pino, Bruno; Saxena, Aayush; Übler, Hannah; Venturi, Giacomo; Witstok, Joris; Baker, William M.; Bhatawdekar, Rachana; Bonaventura, Nina; Boyett, Kristan; Charlot, Stephane; Danhaive, Angelica Lola; Hainline, Kevin N.; Hausen, Ryan; Helton, Jakob M.; Ji, Xihan; Ji, Zhiyuan; Jones, Gareth C.; Juodžbalis, Ignas; Maseda, Michael; Pérez-González, Pablo G.; Perna, Michele; Puskás, Dávid; Shivaei, Irene; Silcock, Maddie; Simmonds, Charlotte; Smit, Renske; Sun, Fengwu; Villanueva, Natalia C.; Williams, Christina C.; Zhu, Yongda; Science and Technology Facilities Council (STFC); European Research Council (ERC); Agencia Estatal de Investigación (AEI); Comunidad de Madrid; University of Arizona (UA); Danish National Research Foundation (DNRF); Australian Research Council (ARC)
We present the third data release of the JWST Advanced Deep Extragalactic Survey (JADES), providing both imaging and spectroscopy in the two GOODS fields. Spectroscopy consists of medium-depth and deep NIRSpec/microshutter assembly spectra of 4000 targets, covering the spectral range 0.6-5.3 μm and observed with both the low-dispersion prism (R = 30-300) and all three medium-resolution gratings (R = 500-1500). We describe the observations, data reduction, sample selection, and target allocation. We measured 2375 redshifts (2053 from multiple emission lines); our targets span the range from z = 0.5 up to z = 13, including 404 at z > 5. The data release includes 2D and 1D fully reduced spectra, with slit-loss corrections and background subtraction optimized for point sources. We also provide redshifts and signal-to-noise ratio > 5 emission-line flux catalogs for the prism and grating spectra, and concise guidelines on how to use these data products. Alongside spectroscopy, we are also publishing fully calibrated NIRCam imaging, which enables studying the JADES sample with the combined power of imaging and spectroscopy. Together, these data provide the largest statistical sample to date to characterize the properties of galaxy populations in the first billion years after the Big Bang.