%0 Generic %1 kim2016agora %A Kim, Ji-hoon %A Agertz, Oscar %A Teyssier, Romain %A Butler, Michael J. %A Ceverino, Daniel %A Choi, Jun-Hwan %A Feldmann, Robert %A Keller, Ben W. %A Lupi, Alessandro %A Quinn, Thomas %A Revaz, Yves %A Wallace, Spencer %A Gnedin, Nickolay Y. %A Leitner, Samuel N. %A Shen, Sijing %A Smith, Britton D. %A Thompson, Robert %A Turk, Matthew J. %A Abel, Tom %A Arraki, Kenza S. %A Benincasa, Samantha M. %A Chakrabarti, Sukanya %A DeGraf, Colin %A Dekel, Avishai %A Goldbaum, Nathan J. %A Hopkins, Philip F. %A Hummels, Cameron B. %A Klypin, Anatoly %A Li, Hui %A Madau, Piero %A Mandelker, Nir %A Mayer, Lucio %A Nagamine, Kentaro %A Nickerson, Sarah %A O'Shea, Brian W. %A Primack, Joel R. %A Roca-Fàbrega, Santi %A Semenov, Vadim %A Shimizu, Ikkoh %A Simpson, Christine M. %A Todoroki, Keita %A Wadsley, James W. %A Wise, John H. %A Collaboration, for the AGORA %D 2016 %K agora comparison disk simulations zoom %T The AGORA High-Resolution Galaxy Simulations Comparison Project. II: Isolated Disk Test %U http://arxiv.org/abs/1610.03066 %X Using an isolated Milky Way-mass galaxy simulation, we compare results from 9 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). Intrinsic code differences such as between mesh-based and particle-based codes are small, and are generally dwarfed by variations in the numerical implementation of the common subgrid physics. 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. We also stress the importance of collaborative and reproducible research in the numerical galaxy formation community the AGORA Project strives to promote.

@misc{kim2016agora, abstract = {Using an isolated Milky Way-mass galaxy simulation, we compare results from 9 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). Intrinsic code differences such as between mesh-based and particle-based codes are small, and are generally dwarfed by variations in the numerical implementation of the common subgrid physics. 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. We also stress the importance of collaborative and reproducible research in the numerical galaxy formation community the AGORA Project strives to promote.}, added-at = {2016-10-12T10:07:41.000+0200}, author = {Kim, Ji-hoon and Agertz, Oscar and Teyssier, Romain and Butler, Michael J. and Ceverino, Daniel and Choi, Jun-Hwan and Feldmann, Robert and Keller, Ben W. and Lupi, Alessandro and Quinn, Thomas and Revaz, Yves and Wallace, Spencer and Gnedin, Nickolay Y. and Leitner, Samuel N. and Shen, Sijing and Smith, Britton D. and Thompson, Robert and Turk, Matthew J. and Abel, Tom and Arraki, Kenza S. and Benincasa, Samantha M. and Chakrabarti, Sukanya and DeGraf, Colin and Dekel, Avishai and Goldbaum, Nathan J. and Hopkins, Philip F. and Hummels, Cameron B. and Klypin, Anatoly and Li, Hui and Madau, Piero and Mandelker, Nir and Mayer, Lucio and Nagamine, Kentaro and Nickerson, Sarah and O'Shea, Brian W. and Primack, Joel R. and Roca-Fàbrega, Santi and Semenov, Vadim and Shimizu, Ikkoh and Simpson, Christine M. and Todoroki, Keita and Wadsley, James W. and Wise, John H. and Collaboration, for the AGORA}, biburl = {https://www.bibsonomy.org/bibtex/2e8203026918b447d872c820ec7c4670c/miki}, description = {[1610.03066] The AGORA High-Resolution Galaxy Simulations Comparison Project. II: Isolated Disk Test}, interhash = {16526695abed971b9d650cb94c9460c7}, intrahash = {e8203026918b447d872c820ec7c4670c}, keywords = {agora comparison disk simulations zoom}, note = {cite arxiv:1610.03066Comment: 28 pages, 35 figures, Submitted for publication in the Astrophysical Journal, Image resolution greatly reduced, High-resolution version of this article is available at http://www.slac.stanford.edu/~mornkr/agora/AGORA_Paper4_draft.pdf, The first paper of the AGORA Initiative is at http://adsabs.harvard.edu/abs/2014ApJS..210...14K, More information on AGORA is at http://www.AGORAsimulations.org/}, timestamp = {2016-10-12T10:07:41.000+0200}, title = {The AGORA High-Resolution Galaxy Simulations Comparison Project. II: Isolated Disk Test}, url = {http://arxiv.org/abs/1610.03066}, year = 2016 }