Zobrazeno 1 - 10
of 217
pro vyhledávání: '"Federico Marinacci"'
Autor:
Claire E. Williams, William Lake, Smadar Naoz, Blakesley Burkhart, Tommaso Treu, Federico Marinacci, Yurina Nakazato, Mark Vogelsberger, Naoki Yoshida, Gen Chiaki, Yeou S. Chiou, Avi Chen
Publikováno v:
The Astrophysical Journal Letters, Vol 960, Iss 2, p L16 (2024)
The James Webb Space Telescope (JWST) is capable of probing extremely early eras of our Universe, when the supersonic relative motions between dark matter and baryonic overdensities modulate structure formation ( z ≳ 10). We study low-mass galaxy f
Externí odkaz:
https://doaj.org/article/14f7008a9718412d9de3d7d5244bd182
Autor:
William Lake, Claire E. Williams, Smadar Naoz, Federico Marinacci, Blakesley Burkhart, Mark Vogelsberger, Naoki Yoshida, Gen Chiaki, Avi Chen, Yeou S. Chiou
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 2, p 115 (2024)
At high redshifts ( z ≳ 12), the relative velocity between baryons and dark matter (the so-called streaming velocity) significantly affects star formation in low-mass objects. Streaming substantially reduces the abundance of low-mass gas objects wh
Externí odkaz:
https://doaj.org/article/9cb75c05b3024192ba78298012b908ef
Autor:
Xiaojie Liao, Zhao-Yu Li, Iulia Simion, Juntai Shen, Robert Grand, Francesca Fragkoudi, Federico Marinacci
Publikováno v:
The Astrophysical Journal, Vol 967, Iss 1, p 5 (2024)
We explore the chemodynamical properties of the Galaxy in the azimuthal velocity V _ϕ and metallicity [Fe/H] space using red giant stars from Gaia Data Release 3. The row-normalized V _ϕ –[Fe/H] maps form a coherent sequence from the bulge to the
Externí odkaz:
https://doaj.org/article/32b19f7fd4844bc28d2cd3d442638603
Autor:
Zhijie Zhang, Xiaoxia Zhang, Hui Li, Taotao Fang, Qingzheng Yu, Yang Luo, Federico Marinacci, Laura V. Sales, Paul Torrey, Mark Vogelsberger
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 1, p 15 (2024)
Milky Way-type galaxies are surrounded by a warm-hot gaseous halo containing a considerable amount of baryons and metals. The kinematics and spatial distribution of highly ionized ion species such as O vi can be significantly affected by supernova (S
Externí odkaz:
https://doaj.org/article/db2ee95b5f114855a928a1b9c0f32cfb
Autor:
Desika Narayanan, Sidney Lower, Paul Torrey, Gabriel Brammer, Weiguang Cui, Romeel Davé, Kartheik G. Iyer, Qi Li, Christopher C. Lovell, Laura V. Sales, Daniel P. Stark, Federico Marinacci, Mark Vogelsberger
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 1, p 73 (2024)
We demonstrate that the inference of galaxy stellar masses via spectral energy distribution (SED) fitting techniques for galaxies formed in the first billion years after the Big Bang carries fundamental uncertainties owing to the loss of star formati
Externí odkaz:
https://doaj.org/article/47cf77ae96a14912ab756c3a16428b2e
Autor:
William Lake, Smadar Naoz, Federico Marinacci, Blakesley Burkhart, Mark Vogelsberger, Claire E. Williams, Yeou S. Chiou, Gen Chiaki, Yurina Nakazato, Naoki Yoshida
Publikováno v:
The Astrophysical Journal Letters, Vol 956, Iss 1, p L7 (2023)
The formation mechanism of globular clusters (GCs) has long been debated by astronomers. It was recently proposed that supersonically induced gas objects (SIGOs)–which formed in the early Universe due to the supersonic relative motion of baryons an
Externí odkaz:
https://doaj.org/article/09316db268c6426bb812e1047817bd2b
Autor:
Zhi Li, Min Du, Victor P. Debattista, Juntai Shen, Hui Li, Jie Liu, Mark Vogelsberger, Angus Beane, Federico Marinacci, Laura V. Sales
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 1, p 77 (2023)
Gas flows in the presence of two independently rotating nested bars remain not fully understood but are likely to play an important role in fueling the central black hole. We use high-resolution hydrodynamical simulations with detailed models of subg
Externí odkaz:
https://doaj.org/article/a41f4e9a733447f9982cae06a1f8ee4a
Autor:
Megan Taylor Tillman, Blakesley Burkhart, Stephanie Tonnesen, Simeon Bird, Greg L. Bryan, Daniel Anglés-Alcázar, Sultan Hassan, Rachel S. Somerville, Romeel Davé, Federico Marinacci, Lars Hernquist, Mark Vogelsberger
Publikováno v:
The Astronomical Journal, Vol 166, Iss 6, p 228 (2023)
We explore the role of galactic feedback on the low-redshift Ly α (Ly α ) forest ( z ≲ 2) statistics and its potential to alter the thermal state of the intergalactic medium. Using the Cosmology and Astrophysics with Machine Learning Simulations
Externí odkaz:
https://doaj.org/article/566a9eaa71ae444c83cb692b7bca2f5a
Autor:
Angus Beane, Lars Hernquist, Elena D’Onghia, Federico Marinacci, Charlie Conroy, Jia Qi, Laura V. Sales, Paul Torrey, Mark Vogelsberger
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 2, p 173 (2023)
Elongated bar-like features are ubiquitous in galaxies, occurring at the centers of approximately two-thirds of spiral disks in the nearby Universe. Due to gravitational interactions between the bar and the other components of galaxies, it is expecte
Externí odkaz:
https://doaj.org/article/c76edec46e0b4fdda7f9a52a126ba27c
Autor:
Desika Narayanan, J.-D. T. Smith, Brandon S. Hensley, Qi Li, Chia-Yu Hu, Karin Sandstrom, Paul Torrey, Mark Vogelsberger, Federico Marinacci, Laura V. Sales
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 2, p 100 (2023)
We present a new methodology for simulating mid-infrared emission from polycyclic aromatic hydrocarbons (PAHs) in galaxy evolution simulations. To do this, we combine theoretical models of PAH emission features as they respond to varying interstellar
Externí odkaz:
https://doaj.org/article/f8645494827d4f99b74d476cd5654ebc