IQ-Collaboratory 1.1: The Star-forming Sequence of Simulated Central Galaxies
| dc.contributor.author | Pandya, Viraj | |
| dc.date.accessioned | 2022-11-03T08:29:05Z | |
| dc.date.available | 2022-11-03T08:29:05Z | |
| dc.date.issued | 2019 | |
| dc.description.abstract | A tightly correlated star formation rate (SFR)–stellar mass relation of star-forming galaxies, or star-forming sequence (SFS), is a key feature in galaxy property-space that is predicted by modern galaxy formation models. We present a flexible data-driven approach for identifying this SFS over a wide range of SFRs and stellar masses using Gaussian mixture modeling (GMM). Using this method, we present a consistent comparison of the z = 0 SFSs of central galaxies in the Illustris, Evolution and Assembly of GaLaxies and their Environment, and MUFASA hydrodynamic simulations and the Santa Cruz semianalytic model (SC-SAM), alongside data from the Sloan Digital Sky Survey. We find, surprisingly, that the amplitude of the SFS varies by up to ∼0.7 dex (factor of ∼5) among the simulations with power-law slopes ranging from 0.7 to 1.2. In addition to the SFS, our GMM method also identifies subcomponents in the SFR–stellar mass plane corresponding to starburst, transitioning, and quiescent subpopulations. | en_US |
| dc.identifier.issn | 0004-637X | |
| dc.identifier.uri | http://hdl.handle.net/10566/8150 | |
| dc.language.iso | en | en_US |
| dc.publisher | The astrophysical journal | en_US |
| dc.subject | galaxies: evolution | en_US |
| dc.subject | halos | en_US |
| dc.subject | star formation | en_US |
| dc.subject | statistics | en_US |
| dc.subject | morphologies | en_US |
| dc.title | IQ-Collaboratory 1.1: The Star-forming Sequence of Simulated Central Galaxies | en_US |
| dc.type | Article | en_US |