论文标题
SDSS的检索J1416+1348AB
Retrieval of SDSS J1416+1348AB
论文作者
论文摘要
我们介绍了D/SDL7 SDSS J14162408+1348263A（J1416A）的距离光谱能分布（SED）和SDSS J14162408+1348263B（J1416B）的更新SED。我们还使用BREWSTER检索代码库和J1416B的第二个检索进行了对J1416A的首次检索分析。我们发现，主要的非灰色云不透明度具有幂律波长依赖性，但在云参数化的类型之间是无法区分的。 J1416B最适合与Line等人的结果一致的无云模型。 （2017）。对于J1416A和J1416B，通过SED和检索得出的大多数基本参数在1个Sigma中是一致的。例外包括J1416A的半径，其中检索半径小于甲板云模型的SED的基于进化模型的半径，以及两个云模型在2.5 Sigma中保持一致的冲击光度。两人的金属性和碳与氧（C/O）比指向形成和进化作为系统。通过在使用两个不透明度模型的同时比较检索到的碱丰度，我们可以评估该不透明度对L和T矮人的行为方式。最后，我们发现组成的相对较小的变化可以驱动较低温度对象的主要可观察差异。
We present the distance-calibrated spectral energy distribution (SED) of the d/sdL7 SDSS J14162408+1348263A (J1416A) and an updated SED for SDSS J14162408+1348263B (J1416B). We also present the first retrieval analysis of J1416A using the Brewster retrieval code base and the second retrieval of J1416B. We find that the primary is best fit by a non-grey cloud opacity with a power-law wavelength dependence, but is indistinguishable between the type of cloud parameterization. J1416B is best fit by a cloud-free model, consistent with the results from Line et al. (2017). Most fundamental parameters derived via SEDs and retrievals are consistent within 1 sigma for both J1416A and J1416B. The exceptions include the radius of J1416A, where the retrieved radius is smaller than the evolutionary model-based radius from the SED for the deck cloud model, and the bolometric luminosity which is consistent within 2.5 sigma for both cloud models. The pair's metallicity and Carbon-to-Oxygen (C/O) ratio point towards formation and evolution as a system. By comparing the retrieved alkali abundances while using two opacity models, we are able to evaluate how the opacities behave for the L and T dwarf. Lastly, we find that relatively small changes in composition can drive major observable differences for lower temperature objects.
