论文标题
恒星质量与光比：复合凸起+磁盘模型和Baryonic Tully-Fisher关系
Stellar Mass-to-light Ratios: Composite Bulge+Disk Models and the Baryonic Tully-Fisher Relation
论文作者
论文摘要
我们提出了出色的人口模型，以根据Galaxy的颜色从$ Galex $ fuv到Spitzer IRAC1，以3.6 $μ$ m的价格计算质量与光比（$υ_*$）。我们提出了一种新的复合凸起+磁盘$υ_*$模型，该模型根据其光学和近红外颜色考虑了凸起和磁盘的不同贡献。使用这些颜色，我们基于星形形成星系的星形形成速率 - 星形质量和质量金属相关性，建立了合理的恒星形成历史和化学富集场景。最准确的处方是使用凸起和磁盘组件的实际颜色来限制$υ_*$;但是，合理的Bulge+磁盘模型加总颜色仅引入5％的不确定性。全面凸起+磁盘$υ_*$处方适用于Baryonic TF关系可提高相关性的线性，增加斜率并将总散布减少4％。
We present stellar population models to calculate the mass-to-light ratio ($Υ_*$) based on galaxy's colors ranging from $GALEX$ FUV to Spitzer IRAC1 at 3.6$μ$m. We present a new composite bulge+disk $Υ_*$ model that considers the varying contribution from bulges and disks based on their optical and near-IR colors. Using these colors, we build plausible star formation histories and chemical enrichment scenarios based on the star formation rate-stellar mass and mass-metallicity correlations for star-forming galaxies. The most accurate prescription is to use the actual colors for the bulge and disk components to constrain $Υ_*$; however, a reasonable bulge+disk model plus total color only introduces 5% more uncertainty. Full bulge+disk $Υ_*$ prescriptions applied to the baryonic TF relation improves the linearity of the correlation, increases the slope and reduces the total scatter by 4%.
