Výsledky vyhledávání - "Davide Fiacconi"

Stellar and weak lensing profiles of massive galaxies in the Hyper-Suprime Cam survey and in hydrodynamic simulations

Autor: Andrew Hearin, Jenny E. Greene, Davide Fiacconi, Lars Hernquist, Alexie Leauthaud, Piero Madau, Lucio Mayer, Sébastien Peirani, Felipe Ardila, Benedikt Diemer, Rajdipa Chowdhury, Enia Xhakaj, Song Huang, Annalisa Pillepich

We perform a consistent comparison of the mass and mass profiles of massive ($M_\star > 10^{11.4}M_{\odot}$) central galaxies at z~0.4 from deep Hyper Suprime-Cam (HSC) observations and from the Illustris, TNG100, and Ponos simulations. Weak lensing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c3b36a850c03e46f52b356bac307e36
https://hal.archives-ouvertes.fr/hal-03433243

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Bar formation as driver of gas inflows in isolated disc galaxies

Autor: Massimo Dotti, Francesco Haardt, R. Fanali, Davide Fiacconi

Publikováno v: MNRAS

Stellar bars are a common feature in massive disc galaxies. On a theoretical ground, the response of gas to a bar is generally thought to cause nuclear starbursts and, possibly, AGN activity once the perturbed gas reaches the central super-massive bl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa4540d3cf7cc3a8805e59983bc67533
https://doi.org/10.1093/mnras/stv2247

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Young and turbulent: the early life of massive galaxy progenitors

Autor: Davide Fiacconi, Lucio Mayer, Alessandro Lupi, Massimo Dotti, Piero Madau, Francesco Haardt

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2017, 467 (4), pp.4080-4100. ⟨10.1093/mnras/stx335⟩
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2017, 467 (4), pp.4080-4100. ⟨10.1093/mnras/stx335⟩
Mon.Not.Roy.Astron.Soc., 2017, 467 (4), pp.4080-4100. 〈10.1093/mnras/stx335〉

We present results from the "Ponos" simulation suite on the early evolution of a massive, $M_{\rm vir}(z=0)=1.2\times 10^{13}$ M$_{\odot}$ galaxy. At $z\gtrsim6$, before feedback from a central supermassive black hole becomes dominant, the main galax

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d0b983822fd51be343968df19d75eac
https://hal.archives-ouvertes.fr/hal-01554765

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Light or heavy supermassive black hole seeds: the role of internal rotation in the fate of supermassive stars

Autor: Elena M. Rossi, Davide Fiacconi

Publikováno v: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (ISSN 0035-8711), 464(2), 2259-2269
Astrophysical Journal

Supermassive black holes are a key ingredient of galaxy evolution. However, their origin is still highly debated. In one of the leading formation scenarios, a black hole of $\sim100$ M$_{\odot}$ results from the collapse of the inner core of a superm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16f18bf49d61ca5cd1af684de50b3bb6
https://academic.oup.com/mnras/article/464/2/2259/2404631

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Adaptive mesh refinement simulations of collisional ring galaxies: effects of the interaction geometry

Autor: Monica Colpi, Davide Fiacconi, E. Ripamonti, Michela Mapelli

Publikováno v: Monthly Notices of the Royal Astronomical Society. 425:2255-2266

Collisional ring galaxies are the outcome of nearly axisymmetric high-speed encounters between a disc and an intruder galaxy. We investigate the properties of collisional ring galaxies as a function of the impact parameter, the initial relative veloc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c0af8baf0724c63cdfcf3726a3c3df4a
https://doi.org/10.1111/j.1365-2966.2012.21566.x

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Growing massive black holes through super-critical accretion of stellar-mass seeds

Autor: Piero Madau, Francesco Haardt, Alessandro Lupi, Massimo Dotti, Davide Fiacconi, Lucio Mayer

Publikováno v: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol 456, iss 3
MNRAS
Monthly Notices of the Royal Astronomical Society, vol 456, iss 3
Lupi, A; Haardt, F; Dotti, M; Fiacconi, D; Mayer, L; & Madau, P. (2016). Growing massive black holes through supercritical accretion of stellar-mass seeds. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 456(3), 2993-3003. doi: 10.1093/mnras/stv2877. UC Santa Cruz: Retrieved from: http://www.escholarship.org/uc/item/5v72j3zd

The rapid assembly of the massive black holes that power the luminous quasars observed at $z \sim 6-7$ remains a puzzle. Various direct collapse models have been proposed to head-start black hole growth from initial seeds with masses $\sim 10^5\,\rm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::944585c7b3b8e79d0186e711a6db929b
http://arxiv.org/abs/1512.02651

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Massive black hole pairs in clumpy, self-gravitating circumnuclear disks: stochastic orbital decay

Autor: Davide Fiacconi, Lucio Mayer, Monica Colpi, Rok Roškar

We study the dynamics of massive black hole pairs in clumpy gaseous circumnuclear disks. We track the orbital decay of the light, secondary black hole $M_{\bullet2}$ orbiting around the more massive primary at the center of the disk, using $N$-body/s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::340111c2ee2f8d6693ea4395e66e7b3c
http://www.openaccessrepository.it/record/15429

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Orbital Decay of Supermassive Black Hole Binaries in Clumpy Multiphase Merger Remnants

Autor: Lucio Mayer, James Wadsley, Thomas R. Quinn, Stelios Kazantzidis, Davide Fiacconi, Rok Roškar

Publikováno v: Monthly Notices of the Royal Astronomical Society, 449 (1)
MNRAS

Monthly Notices of the Royal Astronomical Society, 449 (1)
ISSN:0035-8711
ISSN:1365-2966
ISSN:1365-8711

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76d489169185bf81452358e04ade0668
http://arxiv.org/abs/1406.4505

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Direct formation of supermassive black holes in metal-enriched gas at the heart of high-redshift galaxy mergers

Autor: Thomas P. Quinn, James Wadsley, Rok Roškar, Silvia Bonoli, Sijing Shen, Davide Fiacconi, Lucio Mayer

Publikováno v: Astrophysical Journal

We present novel 3D multi-scale SPH simulations of gas-rich galaxy mergers between the most massive galaxies at $z \sim 8 - 10$, designed to scrutinize the direct collapse formation scenario for massive black hole seeds proposed in \citet{mayer+10}.

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The Argo simulation - II. The early build-up of the Hubble sequence

Autor: Robert Feldmann, Lucio Mayer, Davide Fiacconi

The Hubble sequence is a common classification scheme for the structure of galaxies. Despite the tremendous usefulness of this diagnostic, we still do not fully understand when, where, and how this morphological ordering was put in place. Here, we in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ced9a0ca745971b00a25f1dac73b7a51
https://doi.org/10.5167/uzh-121912

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