Zobrazeno 1 - 10
of 4 847
pro vyhledávání: '"P Di Matteo"'
As machine learning (ML) systems are increasingly adopted across industries, addressing fairness and bias has become essential. While many solutions focus on ethical challenges in ML, recent studies highlight that data itself is a major source of bia
Externí odkaz:
http://arxiv.org/abs/2412.15920
Autor:
Ryde, N., Nandakumar, G., Schultheis, M., Kordopatis, G., di Matteo, P., Haywood, M., Schödel, R., Nogueras-Lara, F., Rich, R. M., Thorsbro, B., Mace, G., Agertz, O., Amarsi, A. M., Kocher, J., Molero, M., Origlia, L., Pagnini, G., Spitoni, E.
A chemical characterization of the Galactic Center is essential for understanding its formation and structural evolution. Trends of alpha-elements, such as Mg, Si, and Ca, serve as powerful diagnostic tools, offering insights into star-formation rate
Externí odkaz:
http://arxiv.org/abs/2412.04528
Autor:
Bhowmick, Aklant K, Blecha, Laura, Torrey, Paul, Somerville, Rachel S, Kelley, Luke Zoltan, Weinberger, Rainer, Vogelsberger, Mark, Hernquist, Lars, Natarajan, Priyamvada, Kho, Jonathan, Di Matteo, Tiziana
The first "seeds" of supermassive black holes (BHs) continue to be an outstanding puzzle, and it is currently unclear whether the imprints of early seed formation survive today. Here we examine the signatures of seeding in the local Universe using fi
Externí odkaz:
http://arxiv.org/abs/2411.19332
Autor:
Khoperskov, Sergey, Di Matteo, Paola, Steinmetz, Matthias, Ratcliffe, Bridget, van de Ven, Glenn, Boin, Tristan, Haywood, Misha, Kacharov, Nikolay, Minchev, Ivan, Krajnovic, Davor, Valentini, Marica, de Jong, Roelof S.
The innermost parts of the Milky Way (MW) are very difficult to observe due to the high extinction along the line of sight, especially close to the disc mid-plane. However, this region contains the most massive complex stellar component of the MW, th
Externí odkaz:
http://arxiv.org/abs/2411.18182
Autor:
Khoperskov, Sergey, Steinmetz, Matthias, Haywood, Misha, van de Ven, Glenn, Krajnovic, Davor, Ratcliffe, Bridget, Minchev, Ivan, Di Matteo, Paola, Kacharov, Nikolay, Marques, Léa, Valentini, Marica, de Jong, Roelof S.
The stellar disc is the dominant luminous component of the Milky Way (MW). Although our understanding of its structure is rapidly expanding due to advances in large-scale stellar surveys, our picture of the MW disc remains substantially obscured by s
Externí odkaz:
http://arxiv.org/abs/2411.16866
Autor:
Puerto-Sánchez, Clara, Habouzit, Melanie, Volonteri, Marta, Ni, Yueying, Foord, Adi, Anglés-Alcázar, Daniel, Chen, Nianyi, Guetzoyan, Paloma, Davé, Romeel, Di Matteo, Tiziana, Dubois, Yohan, Koss, Michael, Rosas-Guevara, Yetli
Detecting dual active galactic nuclei (DAGN) in observations and understanding theoretically which massive black holes (MBHs) compose them and in which galactic and large-scale environment they reside are becoming increasingly important questions as
Externí odkaz:
http://arxiv.org/abs/2411.15297
Autor:
Khoperskov, Sergey, van de Ven, Glenn, Steinmetz, Matthias, Ratcliffe, Bridget, Minchev, Ivan, Krajnovic, Davor, Haywood, Misha, Di Matteo, Paola, Kacharov, Nikolay, Marques, Léa, Valentini, Marica, de Jong, Roelof S.
We introduce a novel orbit superposition method designed to reconstruct the stellar density structure, kinematics, and chemical abundance distribution of the entire Milky Way by leveraging 6D phase-space information from its resolved stellar populati
Externí odkaz:
http://arxiv.org/abs/2411.15062
Autor:
Pagnini, Giulia, Di Matteo, Paola, Haywood, Misha, Mastrobuono-Battisti, Alessandra, Renaud, Florent, Mondelin, Maëlie, Agertz, Oscar, Bianchini, Paolo, Casamiquela, Laia, Khoperskov, Sergey, Ryde, Nils
The peculiar Galactic globular cluster $\omega$ Centauri (NGC 5139) has drawn attention for its unique features - such as a high stellar mass and a broad distribution of chemical elements - that have led to the hypothesis that it might be the nuclear
Externí odkaz:
http://arxiv.org/abs/2410.22479
Autor:
Casamiquela, L., Reese, D. R., Lebreton, Y., Haywood, M., Di Matteo, P., Anders, F., Jash, R., Katz, D., Cerqui, V., Boin, T., Kordopatis, G.
Publikováno v:
A&A 692, A243 (2024)
Reliable stellar age estimates are fundamental for testing several problems in modern astrophysics, in particular since they set the time scales of Galactic dynamical and chemical evolution. In this study, we determine ages using only Gaia DR3 photom
Externí odkaz:
http://arxiv.org/abs/2410.15781
Autor:
Dattathri, Shashank, Natarajan, Priyamvada, Porras-Valverde, Antonio J., Burke, Colin J., Chen, Nianyi, Di Matteo, Tiziana, Ni, Yueying
We study the co-evolution of black holes (BHs) and their host galaxies in the ASTRID and Illustris-TNG300 cosmological simulations and the Dark Sage Semi-Analytic Model (SAM), focusing on the evolution of the BH mass - stellar mass ($M_{\rm BH}-M_*$)
Externí odkaz:
http://arxiv.org/abs/2410.13958