Ariel has been selected as the next ESA M4 science mission and it is expected to be launched in 2028. During its 4-year mission, Ariel will observe the atmospheres of a large and diversified population of transiting exoplanets. A key factor for the achievement of the scientific goal of Ariel is the selection strategy for the definition of the input target list. A meaningful choice of the targets requires an accurate knowledge of the planet hosting star properties and this is necessary to be obtained well before the launch. In this work, we present the results of a bench-marking analysis between three different spectroscopic techniques used to determine stellar parameters for a selected number of targets belonging to the Ariel reference sample. We aim to consolidate a method that will be used to homogeneously determine the stellar parameters of the complete Ariel reference sample. Homogeneous, accurate and precise derivation of stellar parameters is crucial for characterising exoplanet-host stars and in turn is a key factor for the accuracy of the planet properties.

Ariel已被选为下一个ESA M4科学任务，预计将在2028年发射。在为期4年的任务中，Ariel将观察大量多样的过境系外行星的大气。实现Ariel科学目标的关键因素是定义输入目标清单的选择策略。要对目标进行有意义的选择，就需要对拥有恒星性质的行星有准确的了解，这是在发射前就必须获得的。在这项工作中，我们介绍了三种不同光谱技术之间的基准分析结果，这些光谱技术用于确定属于Ariel参考样品的选定数量目标的恒星参数。我们旨在巩固一种将用于均匀确定完整Ariel参考样品的恒星参数的方法。恒星参数的均匀，准确和精确推导对于表征系外行星恒星至关重要，而反过来又是影响行星特性准确性的关键因素。