X-Shooting ULLYSES：低金属丰度大质量恒星。I. 项目描述
太阳与恒星天体物理
2023-07-19 v3 宇宙学与河外天体物理
星系天体物理
高能天体物理现象
摘要
对单个大质量恒星、超亮超新星、伽马射线暴以及涉及壮观黑洞并合的引力波事件的观测表明，低金属丰度宇宙与我们的银河系有根本不同。许多暂现现象将保持神秘，直到我们对低金属丰度(Z)大质量恒星的物理和演化有了坚实理解。哈勃空间望远镜已投入500个轨道，在ULLYSES计划下用COS和STIS光谱仪在紫外(UV)波段观测250颗低Z大质量恒星。互补的“X-Shooting ULLYSES”(XShootU)项目利用ESO甚大望远镜上宽波长覆盖的X-shooter光谱仪提供的高质量光学和近红外光谱增强了遗留价值。我们给出了XShootU项目概述，表明结合ULLYSES紫外和XShootU光学光谱对于统一确定恒星参数(如有效温度、表面重力、光度和丰度)以及风属性(如作为Z函数的质量损失率)至关重要。由于恒星和风参数的不确定性渗透到天体物理学的许多相邻领域，XShootU项目的数据和建模有望成为我们对低Z大质量恒星物理理解的改变者。为了能够自信地解释詹姆斯·韦布空间望远镜(JWST)对第一代恒星的光谱，需要理解低Z恒星的单个光谱，而这正是XShootU可以发挥作用之处。
引用
@article{arxiv.2305.06376,
title = {X-Shooting ULLYSES: massive stars at low metallicity. I. Project Description},
author = {Jorick S. Vink and A. Mehner and P. A. Crowther and A. Fullerton and M. Garcia and F. Martins and N. Morrell and L. M. Oskinova and N. St-Louis and A. ud-Doula and A. A. C. Sander and H. Sana and J. -C. Bouret and B. Kubatova and P. Marchant and L. P. Martins and A. Wofford and J. Th. van Loon and O. Grace Telford and Y. Gotberg and D. M. Bowman and C. Erba and V. M. Kalari and M. Abdul-Masih and T. Alkousa and F. Backs and C. L. Barbosa and S. R. Berlanas and M. Bernini-Peron and J. M. Bestenlehner and R. Blomme and J. Bodensteiner and S. A. Brands and C. J. Evans and A. David-Uraz and F. A. Driessen and K. Dsilva and S. Geen and V. M. A. Gomez-Gonzalez and L. Grassitelli and W. -R. Hamann and C. Hawcroft and A. Herrero and E. R. Higgins and D. John Hillier and R. Ignace and A. G. Istrate and L. Kaper and N. D. Kee and C. Kehrig and Z. Keszthelyi and J. Klencki and A. de Koter and R. Kuiper and E. Laplace and C. J. K. Larkin and R. R. Lefever and C. Leitherer and D. J. Lennon and L. Mahy and J. Maiz Apellaniz and G. Maravelias and W. Marcolino and A. F. McLeod and S. E. de Mink and F. Najarro and M. S. Oey and T. N. Parsons and D. Pauli and M. G. Pedersen and R. K. Prinja and V. Ramachandran and M. C. Ramirez-Tannus and G. N. Sabhahit and A. Schootemeijer and S. Reyero Serantes and T. Shenar and G. S. Stringfellow and N. Sudnik and F. Tramper and L. Wang},
journal= {arXiv preprint arXiv:2305.06376},
year = {2023}
}
备注
Accepted in A&A - 35 Pages, 12 Figures, 4 Tables, 2 Large Tables