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THE AGORA HIGH-RESO...
THE AGORA HIGH-RESOLUTION GALAXY SIMULATIONS COMPARISON PROJECT. II. ISOLATED DISK TEST
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- Kim, Ji Hoon (författare)
- Stanford University,California Institute of Technology,Stanford Linear Accelerator Center (SLAC)
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- Agertz, Oscar (författare)
- Lund University,Lunds universitet,Astronomi - Har omorganiserats,Institutionen för astronomi och teoretisk fysik - Har omorganiserats,Naturvetenskapliga fakulteten,Lund Observatory - Has been reorganised,Department of Astronomy and Theoretical Physics - Has been reorganised,Faculty of Science,University of Surrey
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- Teyssier, Romain (författare)
- University of Zurich
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- Butler, Michael J. (författare)
- Max Planck Institute for Astronomy
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- Ceverino, Daniel (författare)
- Heidelberg University
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- Choi, Jun Hwan (författare)
- University of Texas
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- Feldmann, Robert (författare)
- University of California, Berkeley
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- Keller, Ben W. (författare)
- McMaster University
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- Lupi, Alessandro (författare)
- Paris-Sorbonne University
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- Quinn, Thomas (författare)
- University of Washington
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- Revaz, Yves (författare)
- Swiss Federal Institute of Technology
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- Wallace, Spencer (författare)
- University of Washington
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- Gnedin, Nickolay Y. (författare)
- University of Chicago
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- Leitner, Samuel N. (författare)
- University of Maryland
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- Shen, Sijing (författare)
- University of Cambridge
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- Smith, Britton D. (författare)
- University of Edinburgh
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- Thompson, Robert (författare)
- University of Illinois at Urbana-Champaign
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- Turk, Matthew J. (författare)
- University of Illinois at Urbana-Champaign
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- Abel, Tom (författare)
- Stanford University,Stanford Linear Accelerator Center (SLAC)
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- Arraki, Kenza S. (författare)
- New Mexico State University
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- Benincasa, Samantha M. (författare)
- McMaster University
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- Chakrabarti, Sukanya (författare)
- Rochester Institute of Technology
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- Degraf, Colin (författare)
- University of Cambridge
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- Dekel, Avishai (författare)
- Hebrew University of Jerusalem
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- Goldbaum, Nathan J. (författare)
- University of Illinois at Urbana-Champaign
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- Hopkins, Philip F. (författare)
- California Institute of Technology
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- Hummels, Cameron B. (författare)
- California Institute of Technology
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- Klypin, Anatoly (författare)
- New Mexico State University
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- Li, Hui (författare)
- University of Michigan
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- Madau, Piero (författare)
- University of California, Santa Cruz
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- Mandelker, Nir (författare)
- Hebrew University of Jerusalem,Yale University
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- Mayer, Lucio (författare)
- University of Zurich
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- Nagamine, Kentaro (författare)
- Osaka University,University of Nevada, Reno
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- Nickerson, Sarah (författare)
- University of Zurich
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- O'Shea, Brian W. (författare)
- Michigan State University
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- Primack, Joel R. (författare)
- University of California, Santa Cruz
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- Roca-Fàbrega, Santi (författare)
- Hebrew University of Jerusalem
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- Semenov, Vadim (författare)
- University of Chicago
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- Shimizu, Ikkoh (författare)
- Osaka University
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- Simpson, Christine M. (författare)
- Heidelberg Institute for Theoretical Studies
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- Todoroki, Keita (författare)
- University of Kansas
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- Wadsley, James W. (författare)
- McMaster University
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- Wise, John H. (författare)
- Georgia Institute of Technology
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(creator_code:org_t)
- 2016-12-19
- 2016
- Engelska.
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Ingår i: Astrophysical Journal. - : American Astronomical Society. - 0004-637X .- 1538-4357. ; 833:2
- Relaterad länk:
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http://dx.doi.org/10...
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https://iopscience.i...
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https://lup.lub.lu.s...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- Using an isolated Milky Way-mass galaxy simulation, we compare results from nine state-of-the-art gravito-hydrodynamics codes widely used in the numerical community. We utilize the infrastructure we have built for the AGORA High-resolution Galaxy Simulations Comparison Project. This includes the common disk initial conditions, common physics models (e.g., radiative cooling and UV background by the standardized package Grackle) and common analysis toolkit yt, all of which are publicly available. Subgrid physics models such as Jeans pressure floor, star formation, supernova feedback energy, and metal production are carefully constrained across code platforms. With numerical accuracy that resolves the disk scale height, we find that the codes overall agree well with one another in many dimensions including: gas and stellar surface densities, rotation curves, velocity dispersions, density and temperature distribution functions, disk vertical heights, stellar clumps, star formation rates, and Kennicutt-Schmidt relations. Quantities such as velocity dispersions are very robust (agreement within a few tens of percent at all radii) while measures like newly formed stellar clump mass functions show more significant variation (difference by up to a factor of ∼3). Systematic differences exist, for example, between mesh-based and particle-based codes in the low-density region, and between more diffusive and less diffusive schemes in the high-density tail of the density distribution. Yet intrinsic code differences are generally small compared to the variations in numerical implementations of the common subgrid physics such as supernova feedback. Our experiment reassures that, if adequately designed in accordance with our proposed common parameters, results of a modern high-resolution galaxy formation simulation are more sensitive to input physics than to intrinsic differences in numerical schemes.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- galaxies: evolution
- galaxies: formation
- galaxies: kinematics and dynamics
- ISM: structure
- methods: numerical
- theory
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Kim, Ji Hoon
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Agertz, Oscar
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Teyssier, Romain
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Butler, Michael ...
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Ceverino, Daniel
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Choi, Jun Hwan
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visa fler...
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Feldmann, Robert
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Keller, Ben W.
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Lupi, Alessandro
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Quinn, Thomas
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Revaz, Yves
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Wallace, Spencer
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Gnedin, Nickolay ...
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Leitner, Samuel ...
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Shen, Sijing
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Smith, Britton D ...
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Thompson, Robert
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Turk, Matthew J.
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Abel, Tom
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Arraki, Kenza S.
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Benincasa, Saman ...
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Chakrabarti, Suk ...
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Degraf, Colin
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Dekel, Avishai
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Goldbaum, Nathan ...
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Hopkins, Philip ...
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Hummels, Cameron ...
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Klypin, Anatoly
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Li, Hui
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Madau, Piero
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Mandelker, Nir
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Mayer, Lucio
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Nagamine, Kentar ...
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Nickerson, Sarah
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O'Shea, Brian W.
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Primack, Joel R.
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Roca-Fàbrega, Sa ...
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Semenov, Vadim
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Shimizu, Ikkoh
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Simpson, Christi ...
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Todoroki, Keita
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Wadsley, James W ...
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Wise, John H.
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