S. Simón-Díaz, M. Garcia, A. Herrero, J. Maíz Apellániz, I. Negueruela
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Proceeding for the Workshop "Star clusters and Associations: A RIA Workshop on Gaia", held in Granada from 23rd to 27th May, 2011. 6 pages, 1 figure and 1 table
The IACOB spectroscopic survey of Galactic OB stars is an ambitious observational project aimed at compiling a large, homogeneous, high-resolution database of optical spectra of massive stars observable from the Northern hemisphere. The quantitative spectroscopic analysis of this database, complemented by the invaluable information provided by Gaia (mainly regarding photometry and distances), will represent a major step forward in our knowledge of the fundamental physical characteristics of Galactic massive stars. In addition, results from this analysis will be of interest for other scientific questions to be investigated using Gaia observations. In this contribution we outline the present status of the IACOB spectroscopic database and indicate briefly some of the synergy links between the IACOB and Gaia scientific projects.
ExoDNN: Boosting exoplanet detection with artificial intelligence. Application to Gaia Data Release 3
ATG Science & Engineering for the European Space Agency (ESA)（欧洲航天局工程与技术科学部）；Universidad Complutense de Madrid（马德里康普顿斯大学）；Centro de Astrobiología (CAB, CSIC-INTA)（天体生物学中心（CSIC-INTA））；ISDEFE；European Space Agency (ESA), European Space Astronomy Centre (ESAC)（欧洲航天局欧洲空间天文中心）；European Space Agency (ESA), European Space Research and Technology Centre (ESTEC)（欧洲航天局欧洲空间研究与技术中心）
You're Gonna Need a Bigger Core: Calibrating Massive Star Models against Galactic OB-type Stars
Max Planck Institute for Astrophysics（马克斯·普朗克天体物理研究所）；European Southern Observatory（欧洲南方天文台）；Instituto de Astrofísica de Canarias（加那利天体物理研究所）；Universidad de La Laguna（拉古纳大学）
A Dynamical Model for Clustered Star Formation in the Galactic Disk
恒星形成的集群性质应该在银河系盘的组合相和化学空间中产生高度的结构。到目前为止，观察到的这种结构主要局限于绑定集群和移动集团。在本文中，我们提出了一个新的动力学模型的银河系磁盘，考虑到恒星形成的集群性质。这个模型预测，相和化学空间的组合是丰富的子结构，这种结构是敏感的集群恒星形成的精确性质和大尺度的银河系的属性。该模型自洽演变40亿颗恒星在过去的5 Gyr在一个现实的潜力，包括轴对称组件，酒吧，旋臂，和巨大的分子云（GMC）。所有的恒星都是在星团中诞生的，它们具有一系列的初始条件。由于直接\textit{N}体计算数十亿颗恒星是计算上不可行的，我们已经开发了一种初始化星团粒子的方法来模拟直接\textit{N}体效应的影响，而实际的轨道积分被视为测试粒子内的分析潜力。我们表明，化学和相空间信息的组合是更有效地识别真正的同生人口比单独的化学或相空间。此外，我们表明，共同运动的恒星对很可能是共同出生的，如果他们的速度分离是$< 2$ km s $^{-1}$和他们的金属丰度分离是$< 0.05$ dex。这里呈现的结果预示着利用\textit{Gaia}和光谱测量之间的协同作用来揭示银河系盘的组装历史。
Coralie radial velocity search for companions around evolved stars (CASCADES) II. Seismic masses for three red giants orbited by long-period massive planets
