Zobrazeno 1 - 10
of 336
pro vyhledávání: '"MARCONI, ALESSANDRO"'
Autor:
Ceci, Matteo, Cresci, Giovanni, Arribas, Santiago, Böker, Torsten, Bunker, Andy, Charlot, Stephane, Fahrion, Katja, Isaak, Kate, Lamperti, Isabella, Marconi, Alessandro, Tozzi, Giulia, Perna, Michele, Ulivi, Lorenzo
Merger events are thought to be an important phase in the assembly of massive galaxies. At the same time, Active Galactic Nuclei (AGN) play a fundamental role in the evolution of their star formation histories. Both phenomena can be observed at work
Externí odkaz:
http://arxiv.org/abs/2412.14685
Autor:
Ginolfi, Michele, Mannucci, Filippo, Belfiore, Francesco, Marconi, Alessandro, Boardman, Nicholas, Pozzetti, Lucia, Bolzonella, Micol, Di Teodoro, Enrico, Cresci, Giovanni, Wild, Vivienne, Rodrigues, Myriam, Maiolino, Roberto, Cirasuolo, Michele, Oliva, Ernesto
The era of large-scale astronomical surveys demands innovative approaches for rapid and accurate analysis of extensive spectral data, and a promising direction in which to address this challenge is offered by machine learning. Here, we introduce a ne
Externí odkaz:
http://arxiv.org/abs/2410.22420
Autor:
Trefoloni, Bartolomeo, Gilli, Roberto, Lusso, Elisabeta, Marconi, Alessandro, Mazzolari, Giovanni, Nardini, Emanuele, Risaliti, Guido, Signorini, Matilde
A fundamental ingredient in the unified model of active galactic nuclei (AGN) is the obscuring torus, whose innermost, hottest region dominates the near infrared (NIR) emission. Characterising the change in the torus properties and its interplay with
Externí odkaz:
http://arxiv.org/abs/2410.10941
Autor:
Amiri, Amirnezam, Knapen, Johan H., Comerón, Sébastien, Marconi, Alessandro, Lehmer, Bret. D.
Publikováno v:
A&A 689, A193 (2024)
Metallicity measurements in galaxies can give valuable clues about galaxy evolution. One of the mechanisms postulated for metallicity redistribution in galaxies is gas flows induced by AGN, but the details of this process remain elusive. We report th
Externí odkaz:
http://arxiv.org/abs/2407.12158
The recent JWST observation of the Firefly Sparkle at $z=8.3$ offers a unique opportunity to link the high- and the low-$z$ Universe. Indeed, the claim of it being a Milky Way (MW) type of assembly at the cosmic dawn opens the possibility of interpre
Externí odkaz:
http://arxiv.org/abs/2407.06255
Autor:
Chazelas, Bruno, Ivanisenko, Yevgeniy, Lanotte, Audrey, Diaz, Pablo Santos, Genolet, Ludovic, Sordet, Michael, Hughes, Ian, Lovis, Christophe, Schmidt, Tobias M., Amate, Manuel, Castro, José Peñate, Moreno, Afrodisio Vega, Tenegi, Fabio, Simoes, Roberto, Hernández, Jonay I. González, Osorio, María Rosa Zapatero, Piqueras, Javier, Dávila, Tomás Belenguer, Ortega, Rocío Calvo, González, Roberto Varas, Fernández, Luis Miguel González, Amado, Pedro J., Kern, Jonathan, Dionies, Frank, Bauer, Svend-Marian, Önel, Hakan, Järvinen, Arto, Brynnel, Joar, Füßlein, Christine, Bellido, Olga, Weingrill, Jörg, Giannone, Domenico, Gaessler, Wolfgang, lehmitz, Michael, Kaminski, Adrian, Stilz, Ingo, Sigwarth, Michael, Marconi, Alessandro, Di Marcantonio, Paolo, Oliva, Ernesto, Coretti, Igor, Aliverti, Matteo, Pariani, Giorgio, Cabona, Lorenzo, Radaelli, Edouardo Maria Alberto, Scalera, Marcello, Balestera, Andrea
We present here the preliminary design of the RIZ module, one of the visible spectrographs of the ANDES instrument 1. It is a fiber-fed high-resolution, high-stability spectrograph. Its design follows the guidelines of successful predecessors such as
Externí odkaz:
http://arxiv.org/abs/2406.18317
Autor:
Trefoloni, Bartolomeo, Lusso, Elisabeta, Nardini, Emanuele, Risaliti, Guido, Marconi, Alessandro, Bargiacchi, Giada, Sacchi, Andrea, Signorini, Matilde
Publikováno v:
A&A 689, A109 (2024)
A sample of quasars has been recently assembled to investigate the non-linear relation between their monochromatic luminosities at 2500{\AA}, and 2 keV and to exploit quasars as a new class of standardized candles. The use of this technique for cosmo
Externí odkaz:
http://arxiv.org/abs/2404.07205
Autor:
Puga, Miguel Coloma, Balmaverde, Barbara, Capetti, Alessandro, Massaro, Francesco, Almeida, Cristina Ramos, Miley, George, Gilli, Roberto, Marconi, Alessandro
Spatially resolved observations of AGN host galaxies undergoing feedback processes are one of the most relevant avenues through which galactic evolution can be studied, given the long lasting effects AGN feedback has on gas reservoirs, star formation
Externí odkaz:
http://arxiv.org/abs/2311.08507
Autor:
Trefoloni, Bartolomeo, Lusso, Elisabeta, Nardini, Emanuele, Risaliti, Guido, Bargiacchi, Giada, Bisogni, Susanna, Civano, Francesca M., Elvis, Martin, Fabbiano, Giuseppina, Gilli, Roberto, Marconi, Alessandro, Richards, Gordon T., Sacchi, Andrea, Salvestrini, Francesco, Signorini, Matilde, Vignali, Cristian
We present the analysis of the rest frame ultraviolet and optical spectra of 30 bright blue quasars at $z\sim3$, selected to examine the suitability of AGN as cosmological probes. In our previous works, we found an unexpectedly high fraction ($\appro
Externí odkaz:
http://arxiv.org/abs/2305.07699
Autor:
Tozzi, Giulia, Maiolino, Roberto, Cresci, Giovanni, Piotrowska, Joanna M., Belfiore, Francesco, Curti, Mirko, Mannucci, Filippo, Marconi, Alessandro
Nebular HeII$\lambda$4686\AA~line emission is useful to unveil active galactic nuclei (AGN) residing in actively star-forming (SF) galaxies, typically missed by the standard BPT classification. Here we adopt the HeII diagnostic to identify hidden AGN
Externí odkaz:
http://arxiv.org/abs/2302.04282