Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Ena Choi"'
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 54 (2024)
We investigate the fueling mechanisms of supermassive black holes (SMBHs) by analyzing 10 zoom-in cosmological simulations of massive galaxies, with stellar masses 10 ^11–12 M _⊙ and SMBH masses 10 ^8.9–9.7 M _⊙ at z = 0, featuring various ma
Externí odkaz:
https://doaj.org/article/9c8cecfd72534586a409ae40e3937aa0
On the Effects of Local Environment on Active Galactic Nucleus (AGN) in the Horizon Run 5 Simulation
Autor:
Ankit Singh, Changbom Park, Ena Choi, Juhan Kim, Hyunsung Jun, Brad K. Gibson, Yonghwi Kim, Jaehyun Lee, Owain Snaith
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 1, p 64 (2023)
We use the Horizon Run 5 cosmological simulation to study the effect of galaxy intrinsic properties and the local environment on active galactic nuclei (AGNs) characterized by their threshold of the accretion rate. We select galaxies in the stellar m
Externí odkaz:
https://doaj.org/article/97b5207525d44f40a0797e2bf00ef458
Autor:
Rainer Weinberger, Kung-Yi Su, Kristian Ehlert, Christoph Pfrommer, Lars Hernquist, Greg L Bryan, Volker Springel, Yuan Li, Blakesley Burkhart, Ena Choi, Claude-André Faucher-Giguère
Feedback driven by jets from active galactic nuclei is believed to be responsible for reducing cooling flows in cool-core galaxy clusters. We use simulations to model feedback from hydrodynamic jets in isolated halos. While the jet propagation conver
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06338a40b3aee28f1b73c4a96dc2d5f4
http://arxiv.org/abs/2211.11771
http://arxiv.org/abs/2211.11771
Publikováno v:
Choi, E, Ostriker, J P, Hirschmann, M M, Sommerville, C R & Naab, T 2022, ' The Metallicity Distribution Function in Outer Halo Fields of Simulated Elliptical Galaxies Compared to Observations of NGC 5128 ', Astrophysical Journal, vol. 929, no. 2, 113 . https://doi.org/10.3847/1538-4357/ac5d47
Stellar metallicity distribution functions (MDF) have been measured for resolved stellar populations in the outer halos of many galaxies in nearby groups. Among them, the MDF of NGC 5128, the central giant elliptical in the Centaurus group, provides
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4c1df039279d45d55b5a3450e9f1690
https://curis.ku.dk/ws/files/305410398/Choi_2022_ApJ_929_113.pdf
https://curis.ku.dk/ws/files/305410398/Choi_2022_ApJ_929_113.pdf
Autor:
Shy Genel, Mark Vogelsberger, Rachel S. Somerville, Dylan Nelson, Volker Springel, Rainer Weinberger, Avishai Dekel, Paul Torrey, Ena Choi, Annalisa Pillepich, Mélanie Habouzit, Dale D. Kocevski, Michaela Hirschmann, Lars Hernquist
Publikováno v:
Monthly Notices of the Royal Astronomical Society
arXiv
arXiv
We study the connection between active galactic nuclei (AGN) and their host galaxies through cosmic time in the large-scale cosmological IllustrisTNG simulations. We first compare BH properties, i.e. the hard X-ray BH luminosity function, AGN galaxy
Autor:
ChangHoon Hahn, Tjitske K. Starkenburg, Daniel Anglés-Alcázar, Ena Choi, Romeel Davé, Claire Dickey, Kartheik G. Iyer, Ariyeh H. Maller, Rachel S. Somerville, Jeremy L. Tinker, L. Y. Aaron Yung
Publikováno v:
Hahn, C, Starkenburg, T K, Angles-Alcazar, D, Choi, E, Dave, R, Dickey, C, Iyer, K G, Maller, A H, Somerville, R S, Tinker, J L & Yung, L Y A 2022, ' IQ Collaboratory. III. The Empirical Dust Attenuation Framework-Taking Hydrodynamical Simulations with a Grain of Dust ', Astrophysical Journal, vol. 926, no. 2, 122, pp. 1-20 . https://doi.org/10.3847/1538-4357/ac4253
We present the Empirical Dust Attenuation (EDA) framework -- a flexible prescription for assigning realistic dust attenuation to simulated galaxies based on their physical properties. We use the EDA to forward model synthetic observations for three s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ded696bad1c3db09f3e8bfe65589a14
Autor:
Thorsten Naab, Michaela Hirschmann, Rachel S. Somerville, Ryan Brennan, Jeremiah P. Ostriker, Ena Choi
Metals in the hot gaseous halos of galaxies encode the history of star formation as well as the feedback processes that eject metals from the galaxies. X-ray observations suggest that massive galaxies have extended distributions of metals in their ga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::169bc53f063d13372c4a5bbe09132610
http://arxiv.org/abs/2009.10184
http://arxiv.org/abs/2009.10184
Autor:
Snigdaa Sethuram, George C. Privon, Charlie Conroy, John H. Wise, Prerak Garg, B. Connor McClellan, Qi Li, Ashley J. Kelly, Sidney Lower, Benjamin Kimock, Ena Choi, Desika Narayanan, Ray S. Sharma, Thomas P. Robitaille, Benjamin D. Johnson, Christopher C. Lovell, Jonathan Roberts, Gregory F. Snyder, Matthew W. Abruzzo, Robert Thompson, Matthew J. Turk
Publikováno v:
Narayanan, D, Turk, M J, Robitaille, T, Kelly, A J, McClellan, B C, Sharma, R S, Garg, P, Abruzzo, M, Choi, E, Conroy, C, Johnson, B D, Kimock, B, Li, Q, Lovell, C C, Lower, S, Privon, G C, Roberts, J, Sethuram, S, Snyder, G F, Thompson, R & Wise, J H 2021, ' POWDERDAY : Dust Radiative Transfer for Galaxy Simulations ', Astrophysical Journal Supplement Series, vol. 252, no. 1, 12 . https://doi.org/10.3847/1538-4365/abc487
The Astrophysical Journal Supplement Series, 2021, Vol.252(1), pp.3 [Peer Reviewed Journal]
The Astrophysical Journal Supplement Series, 2021, Vol.252(1), pp.3 [Peer Reviewed Journal]
We present Powderday, a flexible, fast, open-source dust radiative transfer package designed to interface with galaxy formation simulations. Powderday builds on FSPS population synthesis models, Hyperion dust radiative transfer, and employs yt to int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb95f7c46e8f6c6f6b103946abf40669
http://arxiv.org/abs/2006.10757
http://arxiv.org/abs/2006.10757
Autor:
Evan E. Schneider, Nicholas Battaglia, Drummond Fielding, Kung-Yi Su, Miao Li, Christopher C. Hayward, Chang-Goo Kim, Yuan Li, Rachel S. Somerville, Lars Hernquist, Ena Choi, Greg L. Bryan, Daniel DeFelippis, John C. Forbes, Stephanie Tonnesen
We examine the properties of the circumgalactic medium (CGM) at low redshift in a range of simulated Milky Way mass halos. The sample is comprised of seven idealized simulations, an adaptive mesh refinement cosmological zoom-in simulation, and two gr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::115f0a1e170b0112eabb86bfcaed51f2
Autor:
Kartheik Iyer, Rachel S. Somerville, L. Y. Aaron Yung, Nir Mandelker, Ariyeh H. Maller, Claire Dickey, Marla Geha, Daniel Anglés-Alcázar, Ena Choi, Shy Genel, Romeel Davé, Tjitske K. Starkenburg, ChangHoon Hahn
We compare three major large-scale hydrodynamical galaxy simulations (EAGLE, Illustris-TNG, and SIMBA) by forward modeling simulated galaxies into observational space and computing the fraction of isolated and quiescent low mass galaxies as a functio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fbd04aeb52cfd1a961b533047e1b238c