For the spectral analysis of high-resolution and high-signal-to-noise (S/N) spectra of hot stars, advanced non-local thermodynamic equilibrium (NLTE) model atmospheres are mandatory. These atmospheres are strongly dependent on the reliability of the atomic data that are used to calculate them. Reliable Ga IV - VI oscillator strengths are used to identify Ga lines in the spectra of the DA-type white dwarf G191-B2B and the DO-type white dwarf RE0503-289 and to determine their photospheric Ga abundances. We newly calculated Ga IV - VI oscillator strengths to consider their radiative and collisional bound-bound transitions in detail in our NLTE stellar-atmosphere models for analyzing of Ga lines exhibited in high-resolution and high-S/N UV observations of G191-B2B and RE0503-289. We unambiguously detected 20 isolated and 6 blended (with lines of other species) Ga V lines in the Far Ultraviolet Spectroscopic Explorer (FUSE) spectrum of RE0503-289. The identification of Ga IV and Ga VI lines is uncertain because they are weak and partly blended by other lines. The determined Ga abundance is 3.5 +/- 0.5 x 10**-5 (mass fraction, about 625 times solar). The Ga IV / GA V ionization equilibrium, which is a very sensitive indicator for the effective temperature, is well reproduced in RE0503-289. We identified the strongest Ga IV lines (1258.801, 1338.129 A) in the HST/STIS (Hubble Space Telescope / Space Telescope Imaging Spectrograph) spectrum of G191-B2B and measured a Ga abundance of 2.0 +/- 0.5 x 10**-6 (about 22 times solar). Reliable measurements and calculations of atomic data are a prerequisite for stellar-atmosphere modeling. Observed Ga IV - V line profiles in two white dwarf (G191-B2B and RE0503-289) ultraviolet spectra were well reproduced with our newly calculated oscillator strengths. For the first time, this allowed us to determine the photospheric Ga abundance in white dwarfs.
Stellar laboratories. VII. New Kr IV - VII oscillator strengths and an improved spectral analysis of the hot, hydrogen-deficient DO-type white dwarf RE0503-289
Stellar laboratories. VIII. New Zr IV - VII, Xe IV - V, and Xe VII oscillator strengths and the Al, Zr, and Xe abundances in the hot white dwarfs G191-B2B and RE0503-289
Stellar laboratories. IX. New Se V, Sr IV - VII, Te VI, and I VI oscillator strengths and the Se, Sr, Te, and I abundances in the hot white dwarfs G191-B2B and RE 0503-289
KU Leuven（荷语鲁汶大学）；University of Warwick（华威大学）；Institut de Recherche en Astrophysique et Planétologie, CNRS, Université de Toulouse（天体物理学与行星学研究所，法国国家科学研究中心，图卢兹大学）；Instituto de Astrofísica de La Plata, IALP (CCT La Plata), CONICET–UNLP（拉普拉塔天文物理研究所，拉普拉塔 CCT，阿根廷国家科学研究委员会-拉普拉塔国立大学）；Université de Liège（列日大学）；European Southern Observatory（欧洲南方天文台）；Hamburger Sternwarte, University of Hamburg（汉堡天文台，汉堡大学）；Universitat Politècnica de Catalunya（加泰罗尼亚理工大学）
Discovery and Characterization of White Dwarf-FGK Main-Sequence Binaries within the Optical Main-Sequence Locus
National Astronomical Observatories, Chinese Academy of Sciences（中国科学院国家天文台）；University of Chinese Academy of Sciences（中国科学院大学）；Yunnan Observatories, Chinese Academy of Sciences（中国科学院云南天文台）；Chinese Academy of Sciences（中国科学院）；Leibniz-Institut für Astrophysik Potsdam (AIP)（波茨坦阿诺德·爱因斯坦天体物理研究所）；Aerospace Information Technology University（航天信息技术大学）
White Dwarf Binaries: Probes of Future Astrophysics
European Southern Observatory（欧洲南方天文台）；Universitat Politècnica de Catalunya（加泰罗尼亚理工大学）；Institut d’Estudis Espacials de Catalunya (IEEC)（加泰罗尼亚空间研究所）；University of Warwick（华威大学）；École Polytechnique Fédérale de Lausanne (EPFL)（洛桑联邦理工学院）；Universidad Técnica Federico Santa María（费德里科·圣玛丽亚技术大学）；São Paulo State University (UNESP)（圣保罗州立大学）；University of Cambridge（剑桥大学）；South African Astronomical Observatory（南非天文台）；Center for Astrophysics, Harvard & Smithsonian（哈佛-史密森天体物理中心）；Centro de Estudios de Física del Cosmos de Aragón (CEFCA)（阿拉贡宇宙物理学研究中心）；Instituto de Astrofísica de Canarias（加那利天体物理研究所）；Universidad de La Laguna（拉古纳大学）；Max-Planck-Institut für Astrophysik（马克斯·普朗克天体物理研究所）；Texas Tech University（德克萨斯理工大学）；University of Hamburg（汉堡大学）；INAF - Osservatorio Astronomico di Capodimonte（意大利国家天体物理研究所卡波迪蒙特天文台）；Charles University（查理大学）；University of Sheffield（谢菲尔德大学）；Ruprecht-Karls-Universität（海德堡大学）；Durham University（杜伦大学）；University of Washington（华盛顿大学）；KU Leuven（荷语鲁汶大学）；Universidad de Valparaíso（瓦尔帕莱索大学）
Stars on the ascending helium giant branch I. From white dwarf merger to helium giant: the evolutionary state of the rapidly rotating hot subdwarf HE 1518-0948
Universität Potsdam（波茨坦大学）；Instituto de Astrofísica de La Plata, Consejo Nacional de Investigaciones Científicas y Técnicas（拉普拉塔天体物理研究所，国家科学研究委员会）；Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata（拉普拉塔国立大学天文与地球科学学院）；Hamburger Sternwarte, University of Hamburg（汉堡大学汉堡天文台）
通过光谱分析研究极端富氦热亚矮星 HE 1518-0948，发现其是双氦白矮星并合产物，目前处于氦壳燃烧并沿氦巨星分支上升阶段，为理解大质量热亚矮星在核心氦燃烧后的演化提供了重要实验室。
Asymmetric nightside CO2 features, inefficient heat transport, and precise evolutionary constraints: Spectroscopic phase curves reveal the past and present of a white dwarf-brown dwarf binary
University of Virginia（弗吉尼亚大学）；Space Telescope Science Institute（太空望远镜科学研究所）；University of Arizona（亚利桑那大学）；Massachusetts Institute of Technology（麻省理工学院）；University of Birmingham（伯明翰大学）；University of Leicester（莱斯特大学）；Johns Hopkins University Applied Physics Laboratory（约翰斯·霍普金斯大学应用物理实验室）
Observing solar vortices with existing and future instrumentation. Solar Physics International Network for Swirls (SPINS) white paper (Helio)
University of Sheffield（谢菲尔德大学）；Northumbria University（诺森比亚大学）；National Observatory of Athens, Greece（希腊雅典国家天文台）；Leibniz-Institut für Astrophysik Potsdam, Germany（德国波茨坦莱布尼茨天体物理研究所）
J0404+1112: A 3-Hour Eclipsing White Dwarf-Brown Dwarf Probing Multiple Atmospheric Regimes
Massachusetts Institute of Technology（麻省理工学院）；Instituto de Astrofísica de Canarias (IAC)（加那利天体物理学研究所）；Universidad de La Laguna (ULL)（拉古纳大学）；NASA Johnson Space Center（美国国家航空航天局约翰逊航天中心）；University of Leicester（莱斯特大学）；University of Virginia（弗吉尼亚大学）；University of Birmingham（伯明翰大学）
3.5-meter Segmented-Mirror Robotic Space Telescope Mission White Paper III. Key Scientific Mission: Exoplanet Science with a Coronagraph
Korea Institute for Advanced Study（韩国高级科学研究院）；Korea Astronomy and Space Science Institute（韩国天文学与空间科学研究所）；University of Ulsan（蔚山科学技术院）；University of Science and Technology（科学技术联合大学院大学）；Kyungpook National University（庆北国立大学）；Space Telescope Science Institute（太空望远镜科学研究所）；Pusan National University（釜山国立大学）；Korea National University of Education（韩国国立教育大学）；Seoul National University（首尔国立大学）；Yonsei University（延世大学）
