论文标题
用Gaia观察到的SB2二进制组的成分质量。 V. 5个二进制文件的10个二进制组和质量的精确SB2轨道
Masses of the components of SB2 binaries observed with Gaia. V. Accurate SB2 orbits for 10 binaries and masses of the components of 5 binaries
论文作者
论文摘要
双线光谱二进制（SB2S）是恒星质量的主要来源之一，因为仅需要进行其他观察来提供轨道平面的倾斜度才能获得各个组成部分。因此，我们正在使用Sophie光谱仪在Haute-Provence天文台观察SB2的选择，以精确确定其轨道元素。我们的目标是最终通过结合我们的径向速度（RV）测量值和将来自Gaia卫星的天体测量值，以1％的准确度获得质量。我们在这里介绍了10 SB2的RVS和重新确定的轨道。为了验证我们将源自Gaia的质量，我们为其中一个SB2获得了ESO VLTI的干涉测量。添加我们或其他人已经为其他4颗恒星发布的干涉测量值或斑点测量值，我们最终获得了5个二元恒星的组成部分的质量，其中质量从0.51到2.2个太阳能群，包括主序列dwarfs和一些进化的星星，其在HR图中的位置更多。
Double-lined spectroscopic binaries (SB2s) are one of the main sources of stellar masses, as additional observations are only needed to give the inclinations of the orbital planes in order to obtain the individual masses of the components. For this reason, we are observing a selection of SB2s using the SOPHIE spectrograph at the Haute-Provence observatory in order to precisely determine their orbital elements. Our objective is to finally obtain masses with an accuracy of the order of one percent by combining our radial velocity (RV) measurements and the astrometric measurements that will come from the Gaia satellite. We present here the RVs and the re-determined orbits of 10 SB2s. In order to verify the masses we will derive from Gaia, we obtained interferometric measurements of the ESO VLTI for one of these SB2s. Adding the interferometric or speckle measurements already published by us or by others for 4 other stars, we finally obtain the masses of the components of 5 binary stars, with masses ranging from 0.51 to 2.2 solar masses, including main-sequence dwarfs and some more evolved stars whose location in the HR diagram has been estimated.
