论文标题
低表面亮度星系的自洽颜色质量与光线关系
Self-consistent Color-Mass-to-Light-Ratio relations for Low Surface Brightness Galaxies
论文作者
论文摘要
颜色 - 恒星质量与光比关系（CMLR）是估计星系恒星质量（M*）的广泛接受的工具。但是，当单个CMLR在不同的频段中应用时，单个CMLR倾向于给出同一星系的不同M*。检查了文献中的五个代表性的CMLR，我们发现CMLR从光学到近红外的不同频段中预测的M*差异为0.1-0.3 DEX。因此，基于覆盖各种颜色和发光度的低表面亮度星系（LSBG）的样品，我们在R，I，I，Z，J，H和K带中重新校准了每个原始CMLR，以使内部自持良数M*用于同一星系。 G-R是重新校准关系中的主要颜色指标，几乎没有依赖性红色（R-Z）或近红外（J-K）颜色。从最初预测的恒星质量与光（M*/L）的外部差异上，五个独立的cmlr在重新汇率之后又大大降低了，尤其是在附近，尤其是在附近，尤其是在附近，尤其是在附近，尤其是在附近，尤其是在附近，尤其如此预测M*/L更强大。对于每个CMLR，这项工作中提供的重新校准关系可能会从不同的光度带中产生内部自以为是的M*，并且是McGaugh＆Schombert（2014）的开拓性工作从Johnson-Cousein Filter System到SDSS滤波器系统的重新校准的扩展。
The color - stellar mass-to-light ratio relation (CMLR) is a widely accepted tool to estimate the stellar mass (M*) of a galaxy. However, an individual CMLR tends to give distinct M* for a same galaxy when it is applied in different bands. Examining five representative CMLRs from literature, we find that the difference in M* predicted in different bands from optical to near-infrared by a CMLR is 0.1-0.3 dex. Therefore, based on a sample of low surface brightness galaxies (LSBG) that covers a wide range of color and luminosity, we re-calibrated each original CMLR in r, i, z, J, H, and K bands to give internally self-consistent M* for a same galaxy. The g-r is the primary color indicator in the re-calibrated relations which show little dependenceon red (r - z) or near-infrared (J - K) colors.Additionally, the external discrepancies in the originally predicted stellar mass-to-light ratio (M*/L) by the five independent CMLRs have been greatly reduced after re-calibration, especially in near-infrared bands, implying that the near-infrared luminosities are more robust to predict M*/L. For each CMLR, the re-calibrated relations provided in this work could produce internally self-consistent M* from divergent photometric bands, and are extensions of the re-calibrations from Johnson-Cousin filter system by the pioneering work of McGaugh & Schombert (2014) to SDSS filter system.
