用盖亚天体测量学了解银河系结构
Learning about Galactic structure with Gaia astrometry
摘要：
对盖亚飞行任务和最终目录的预期内容进行了审查。最后指出，用盖亚天体测量研究银河系结构的最终目标应该是建立一个能够解释盖亚星表内容的银河系动力学模型。这只有通过将预测的目录数据与盖亚的实际测量结果进行比较才有可能。为了补充这一方法，盖亚目录应被用来重新校准测光距离和丰度指标的HR图，以克服缺乏精确的视差数据在暗端的天体测量。在这方面，利用其他调查的补充光度和光谱数据至关重要。
英文摘要：
The Gaia mission is reviewed together with the expected contents of the final catalogue. It is then argued that the ultimate goal of Galactic structure studies with Gaia astrometry should be to build a dynamical model of our galaxy which is capable of explaining the contents of the Gaia catalogue. This will be possible only by comparing predicted catalogue data to Gaia's actual measurements. To complement this approach the Gaia catalogue should be used to recalibrate photometric distance and abundance indicators across the HR-diagram in order to overcome the lack of precise parallax data at the faint end of the astrometric survey. Using complementary photometric and spectroscopic data from other surveys will be essential in this respect.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
