Zobrazeno 1 - 10
of 287
pro vyhledávání: '"Victor P Debattista"'
Autor:
Vance Wheeler, Monica Valluri, Leandro Beraldo e Silva, Shashank Dattathri, Victor P. Debattista
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 2, p 119 (2023)
Using N -body simulations, we explore the effects of growing a supermassive black hole (SMBH) prior to or during the formation of a stellar bar. Keeping the final mass and growth rate of the SMBH fixed, we show that if it is introduced before or whil
Externí odkaz:
https://doaj.org/article/bb79698193b34767a32efebda82e4b4c
Autor:
Aishwarya Ashok, Anil Seth, Peter Erwin, Victor P. Debattista, Adriana de Lorenzo-Cáceres, Dmitri A. Gadotti, Jairo Méndez-Abreu, John E. Beckman, Ralf Bender, Niv Drory, Deanne Fisher, Ulrich Hopp, Matthias Kluge, Tutku Kolcu, Witold Maciejewski, Kianusch Mehrgan, Taniya Parikh, Roberto Saglia, Marja Seidel, Jens Thomas
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 1, p 100 (2023)
We present photometric and morphological analyses of nuclear star clusters (NSCs)—very dense, massive star clusters present in the central regions of most galaxies—in a sample of 33 massive disk galaxies within 20 Mpc, part of the “Composite Bu
Externí odkaz:
https://doaj.org/article/bf0559b54134492daa82cb903934c656
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:
Leandro Beraldo e Silva, Victor P. Debattista, Stuart Robert Anderson, Monica Valluri, Peter Erwin, Kathryne J. Daniel, Nathan Deg
Publikováno v:
The Astrophysical Journal, Vol 955, Iss 1, p 38 (2023)
Many barred galaxies exhibit upturns (shoulders) in their bar-major-axis density profile. Simulation studies have suggested that shoulders are supported by looped x _1 orbits, occur in growing bars, and can appear after bar buckling. We investigate t
Externí odkaz:
https://doaj.org/article/44036d7fbfa348caa1b1117317be00f9
Autor:
Bethany R. Garver, David L. Nidever, Victor P. Debattista, Leandro Beraldo e Silva, Tigran Khachaturyants
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 2, p 128 (2023)
The Milky Way (MW) stellar disk has both a thin and a thick component. The thin disk is composed mostly of younger stars (≲8 Gyr) with a lower abundance of α -elements, while the thick disk contains predominantly older stars (≳8–12 Gyr) with a
Externí odkaz:
https://doaj.org/article/e45e6ca550944a5daab4af620047d691
Autor:
Victor P. Debattista, David J. Liddicott, Oscar A. Gonzalez, Leandro Beraldo e Silva, João A. S. Amarante, Ilin Lazar, Manuela Zoccali, Elena Valenti, Deanne B. Fisher, Tigran Khachaturyants, David L. Nidever, Thomas R. Quinn, Min Du, Susan Kassin
Publikováno v:
The Astrophysical Journal, Vol 946, Iss 2, p 118 (2023)
In Paper I, we showed that clumps in high-redshift galaxies, having a high star formation rate density (Σ _SFR ), produce disks with two tracks in the [Fe/H]–[ α /Fe] chemical space, similar to that of the Milky Way’s (MW’s) thin+thick disks.
Externí odkaz:
https://doaj.org/article/0540b9380dfd44b5b6174d24e5833703
Autor:
Tigran Khachaturyants, Victor P Debattista, Soumavo Ghosh, Leandro Beraldo e Silva, Kathryne J Daniel
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters. 517:L55-L59
We measure and compare the pattern speeds of vertical breathing, vertical bending, and spiral density waves in two isolated N-body+SPH simulations, using windowed Fourier transforms over 1 Gyr time intervals. We show that the pattern speeds of the br
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16430e0c96c84e36ba9ef0de7561118a
https://doi.org/10.1093/mnrasl/slac112
https://doi.org/10.1093/mnrasl/slac112
Autor:
Virginia Cuomo, Victor P Debattista, Sarah Racz, Stuart Robert Anderson, Peter Erwin, Oscar A Gonzalez, J W Powell, Enrico Maria Corsini, Lorenzo Morelli, Mark A Norris
The short-lived buckling instability is responsible for the formation of at least some box/peanut (B/P) shaped bulges, which are observed in most massive, $z=0$, barred galaxies. Nevertheless, it has also been suggested that B/P bulges form via the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbb210d964644df8c6d418886746ba3b
http://arxiv.org/abs/2210.12255
http://arxiv.org/abs/2210.12255
Autor:
Duncan A. Forbes, J. A. Hernandez-Jimenez, Arianna Cortesi, Claudia Mendes de Oliveira, L. Santana-Silva, Aaron J. Romanowsky, Leandro Beraldo e Silva, Jean P. Brodie, Fabricio Ferrari, Steven P. Bamford, Marco Grossi, Geferson Lucatelli, Victor P. Debattista, Marina Vika, M. L. Buzzo, Roderik Overzier, A. Werle, Lodovico Coccato, Carlos Eduardo Barbosa
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 504:2146-2167
A detailed study of the morphology of lenticular galaxies is an important way to understand how this type of galaxy formed and evolves over time. Decomposing a galaxy into its components (disc, bulge, bar, ...) allows recovering the colour gradients
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c4115ad5e9b6dbf54173f38c193bae4
https://doi.org/10.1093/mnras/stab941
https://doi.org/10.1093/mnras/stab941
Autor:
Stuart Robert Anderson, Victor P Debattista, Peter Erwin, David J Liddicott, Nathan Deg, Leandro Beraldo e Silva
The major-axis density profiles of bars are known to be either exponential or 'flat'. We develop an automated non-parametric algorithm to detect flat profiles and apply it to a suite of simulations (with and without gas). We demonstrate that flat pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12df31e523af579e03ade4f8f12b2dd5