当前位置: X-MOL 学术Planet. Sci. J. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Uncertainties on Asteroid Albedos Determined by Thermal Modeling
The Planetary Science Journal Pub Date : 2021-02-24 , DOI: 10.3847/psj/abda4d
Joseph R. Masiero 1 , E. L. Wright 2 , A. K. Mainzer 3
Affiliation  

We present an analysis of the accuracy of geometric albedos determined for asteroids through the modeling of observed thermal infrared radiation. We show that albedo uncertainty is dominated by the uncertainty on the measured H V absolute magnitude, and that any analysis using albedos in a statistical application will also be dominated by this source of uncertainty. For all but the small fraction of asteroids with a large amount of characterization data, improved knowledge of the H V magnitude will be fundamentally limited by incomplete phase-curve coverage, incomplete light-curve knowledge, and the necessary conversion from the observed band to the V band. Switching the absolute magnitude standard to a different band such a $r^{\prime} $ would mitigate the uncertainty due to band conversion for many surveys, but this only represents a small component of the total uncertainty. Therefore, techniques making use of these albedos must ensure that their uncertainties are properly accounted for.



中文翻译:

热模型确定的小行星反照率的不确定性

我们通过对观测到的热红外辐射进行建模,对小行星确定的几何反照率的准确性进行了分析。我们表明,反照率不确定度受测得的H V绝对量的不确定度支配,并且在统计应用中使用反照率进行的任何分析也将由这种不确定性源支配。对于除小部分以外具有大量特征数据的所有小行星,从根本上,有限的相曲线覆盖范围,不完全的光曲线知识以及从观察到的波段到光波段的转换将极大地限制对H V幅值知识的改进。V带。将绝对幅度标准切换到其他频段,例如 $ r ^ {\ prime} $可以减轻许多调查因频段转换而带来的不确定性,但这仅占总不确定性的一小部分。因此,利用这些反照率的技术必须确保适当地考虑其不确定性。

更新日期:2021-02-24
down
wechat
bug