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| Paper: |
The Galactic Synthesis Population Model GalMod |
| Volume: |
514, Stellar Populations and the Distance Scale |
| Page: |
7 |
| Authors: |
Pasetto, S. |
| Abstract: |
We present the first complete version of the new Galaxy population synthesis model: GalMod. The model aims to generate synthetic mock catalogs of visible portions of the Milky Way (MW) galaxy, M31, or any other Local Group galaxy. To describe a galaxy, we model it a sum of discrete stellar populations, namely bulge, disk, and halo. Each disk population is itself the sum of subpopulations: spiral arms, thin disk, and thick disk. We define all these components by their density profile scale parameters. The galaxy potential is computed from these density profiles and used to generate the kinematics of the stellar populations. The same density profiles are used to define the observed color-magnitude diagrams in the field of view from an arbitrary solar location. GalMod, first introduced by Pasetto et al. (2016), has been completed with a new asymmetric bulge stellar population representing a bar and described by applying the density wave theory for bar instability to the modeled galaxy very central regions. New photometric systems have been included and made available online to cover SDSS, Gaia, 2MASS, HST and other photometric systems. The extinction model has been updated accordingly to account for the new photometric system passbands. The model has free web page access and tutorial at www.galmod.org. |
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