With the imminent start of the Legacy Survey for Space and Time (LSST) on the Vera C. Rubin Observatory, and several new space telescopes expected to begin operations later in this decade, both time domain and wide-field astronomy are on the threshold of a new era. In this paper, we use a new, multi-component model for the distribution of white dwarfs (WDs) in our Galaxy to simulate the WD populations in four upcoming wide-field surveys (i.e., LSST, Euclid, the Roman Space Telescope and CASTOR) and use the resulting samples to explore some representative WD science cases. Our results confirm that LSST will provide a wealth of information for Galactic WDs, detecting more than 150 million WDs at the final depth of its stacked, 10-year survey. Within this sample, nearly 300,000 objects will have 5$σ$ parallax measurements and nearly 7 million will have 5$σ$ proper motion measurements, allowing the detection of the turn-off in the halo WD luminosity function and the discovery of more than 200,000 ZZ Ceti stars. The wide wavelength coverage that will be possible by combining LSST data with observations from Euclid, and/or the Roman Space Telescope, will also discover more than 3,500 WDs with debris disks, highlighting the advantages of combining data between the ground- and space-based missions.
Presaging Doppler beaming discoveries of double white dwarfs during the Rubin LSST era
Johns Hopkins University(约翰斯·霍普金斯大学);Astrophysics Research Center of the Open University (ARCO)(开放大学天体物理研究中心);Institute for Advanced Study, Princeton(普林斯顿高等研究院);The Observatories of the Carnegie Institution for Science(卡内基科学研究所天文台)
EROSE: An algorithm searching for resolved Local Group satellites. The impact of combining different photometric bands on the detectability of Milky Way satellites in the LSST
Université de Strasbourg(斯特拉斯堡大学);CNRS, Observatoire astronomique de Strasbourg, UMR 7550(法国国家科学研究中心,斯特拉斯堡天文台,UMR 7550);Kapteyn Astronomical Institute, University of Groningen(格罗宁根大学卡普坦天文研究所);Max-Planck-Institut für Astronomie(马克斯·普朗克天文学研究所)
The contribution of the color space in LSST-like photometry for the selection of extragalactic globular cluster candidates
Universidade Tecnológica Federal do Paraná(巴西联邦技术巴拉那大学);Laboratório Interinstitucional de e-Astronomia (LIneA)(跨机构电子天文学实验室);Instituto de Física, Universidade Federal do Rio Grande do Sul(南里奥格兰德联邦大学物理研究所);Centre for Astrophysics Research, University of Hertfordshire(赫特福德大学天体物理学研究中心);Department of Physics & Astronomy, University of North Carolina at Chapel Hill(北卡罗来纳大学教堂山分校物理与天文学系);International Centre for Radio Astronomy Research, Curtin University(科廷大学国际射电天文研究中心)
Redshift Assessment Infrastructure Layers (RAIL): Rubin-era photometric redshift stress-testing and at-scale production
Ruhr University Bochum(鲁尔大学波鸿);SLAC National Accelerator Laboratory(斯坦福直线加速器中心);Kavli Institute for Particle Astrophysics and Cosmology (KIPAC), Stanford University(卡弗里粒子天体物理与宇宙学研究所,斯坦福大学);Université Clermont-Auvergne, CNRS, LPCA(克莱蒙奥弗涅大学,法国国家科学研究中心,LPCA);McWilliams Center for Cosmology and Astrophysics, Department of Physics, Carnegie Mellon University(梅斯威尔宇宙学与天体物理中心,卡内基梅隆大学物理系)
RAIL 是一个开源 Python 库,用于大规模概率光度红移估计,提供模块化工具进行端到端压力测试和红移 PDF 估算,适用于多种科学目标。
K-DRIFT Science Theme: Illuminating the Next Era of Galaxy Cluster Science
Korea Astronomy and Space Science Institute(韩国天文与空间科学研究所);Quantum Universe Center, Korea Institute for Advanced Study(量子宇宙中心,韩国高等研究院);Department of Astronomy and Space Science, University of Science and Technology, Korea(韩国科学技术大学天体物理与空间科学系);Natural Science Research Institute, University of Seoul(首尔大学自然科学研究所);School of Physics, Korea Institute for Advanced Study(韩国高等研究院物理学院);Institut d’Astrophysique de Paris, Sorbonne Université, CNRS(巴黎天体物理研究所,索邦大学,法国国家科学研究中心);Departamento de Física, Universidad Técnica Federico Santa María(费德里科·圣玛丽亚理工大学物理系);Department of Astronomy and Atmospheric Sciences, Kyungpook National University(庆北国立大学天体物理与大气科学系)
Rubin LSST observing strategies to maximize volume and uniformity coverage of Star Forming Regions in the Galactic Plane
在全天巡天时代,绘制银河系最年轻的恒星星族的完整地图是现代天体物理学中最具挑战性的目标之一。最年轻的恒星组成部分的特性是至关重要的,不仅对银河系结构的全球概览,银河系薄盘,其旋臂,但也为当地的研究。事实上,恒星形成区(SFR)的识别以及与它们形成的环境的比较,对于将它们置于周围巨大分子云的背景下以及理解与恒星和行星形成过程相关的未知物理机制也是至关重要的。在10年的观察中,Vera C. Rubin Legacy Survey of Space and Time(Rubin-LSST)将实现精致的光度深度,这将使我们能够显着扩展我们能够发现新SFR的体积,并扩大我们自己的银河系的详细知识领域。本文描述了一个度量,它估计了< 10 Myr and masses >Rubin LSST观测在5 σ星等显著性的GRI带中将探测到的年龄为t 0.3 M $_\odot$的年轻恒星的总数。我们采用最新的模拟Rubin-LSST调查策略来检查我们的指标结果,以评估不同的观察策略可能对我们的科学案例产生的影响。
Science drivers and requirements for an Advanced Technology Large Aperture Space Telescope (ATLAST): Implications for technology development and synergies with other future facilities
Astro2020 Science White Paper: A New Era for X-ray Lensing Studies of Quasars and Galaxies
目前的X射线观测和模拟表明,引力透镜可以用来推断黑洞事件视界附近的结构,限制黑洞吸积和流出的动力学和演化,在强引力区检验广义相对论,并限制透镜星系中暗物质的演化。由于目前X射线望远镜的能力有限,而且已知的透镜类星体数量相对较少(约200个),这些科学目标目前无法在z = 0.5 - 5的透镜类星体的统计大样本中实现。后一个限制将通过LSST的多波段和宽视场光度光学测量来解决,预计将导致发现超过4,000个额外的引力透镜系统。正如我们在本白皮书中所展示的,这些科学目标可以通过在1千电子伏下空间分辨率为0.5平方米的X射线望远镜来实现<0.5arcsec to resolve the lensed images and a collecting area of >。
Predicting the Spectroscopic Features of Galaxies by Applying Manifold Learning on Their Broad-Band Colors: Proof of Concept and Potential Applications for Euclid, Roman, and Rubin LSST
Too Many, Too Few, or Just Right? The Predicted Number and Distribution of Milky Way Dwarf Galaxies
通过对观测到的SDSS矮星系群的完全性修正,我们预测了DES和LSST巡天中发现的银河系矮星系的空间分布和数量。我们应用最大规模的在过去,最早的形成,最早的坠落玩具模型,一组暗物质模拟银河系/M31晕对探索本地体积模拟(ELVIS)。观测到的银河系矮星系在LSST时代的空间分布将区分最早的陷落和矮星系如何填充暗物质subhalos的其他简化模型。包括所有的玩具模型和模拟,在90%的置信度下,我们预测在300 kpc内总共有37-114 L $\gtrsim 10^3$ L $_{\odot}$侏儒和131-782 L $\lesssim 10^3$ L $_{\odot}$侏儒。这些L $\gtrsim 10^3$ L $_{\odot}$矮星的数量比以前的预测要低得多,这主要是因为我们使用了更新的探测极限,并且每个天空区域发现的SDSS矮星的数量越来越少。对于25.8 mag的有效$r_{\rm limit}$,我们预测:DES的3-13 L $\gtrsim 10^3$ L $_{\odot}$和9-99 L $\lesssim 10^3$ L $_{\odot}$侏儒,LSST的18-53 L $\gtrsim 10^3$ L $_{\odot}$和53-307 L $\lesssim 10^3$ L $_{\odot}$侏儒。这些巨大的预测范围确保了未来十年的近场兴奋与这些…
Hyrax: An Extensible Framework for Rapid ML Experimentation and Unsupervised Discovery in the Era of Rubin, Roman, and Euclid
Dept. of Astronomy \& the DiRAC Institute, University of Washington, Box 351580, Seattle, WA 98195, USA;School of Physics;Astronomy, University of Minnesota, Minneapolis, MN 55455, USA;Department of Astronomy;Planetary Science, Northern Arizona University, Flagstaff, USA;McWilliams Center for Cosmology;Astrophysics, Department of Physics, Carnegie Mellon University, Pittsburgh, PA 15213, USA
Space Telescope Science Institute(太空望远镜科学研究所);Department of Astronomy, University of Wisconsin—Madison(威斯康星大学麦迪逊分校天文学系);Department of Physics, University of Wisconsin—Whitewater(威斯康星大学惠特沃分校物理系);SLAC National Accelerator Laboratory(斯坦福直线加速器中心);The Observatories of the Carnegie Institution for Science(卡内基科学机构天文台)