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arXiv 2007.01312astro-ph.GA
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LSST时代的白矮星及其与天基任务的协同作用

White Dwarfs in the Era of the LSST and its Synergies with Space-Based Missions

Nicholas J. Fantin, Patrick Côté, Alan McConnachie

摘要:

随着维拉C号上的时空遗产调查(LSST)即将开始。鲁宾天文台和几个新的太空望远镜预计将在本十年晚些时候开始运作,时域和宽视场天文学都即将进入一个新时代。在本文中,我们使用一种新的多分量模型来模拟银河系中白矮星(WD)的分布,以模拟即将进行的四次宽场调查(即,LSST,欧几里得,罗马空间望远镜和CASTOR),并使用所得的样本来探索一些代表性的WD科学案例。我们的研究结果证实,LSST将为银河系WD提供丰富的信息,在其堆叠的10年调查的最终深度检测到超过1.5亿个WD。在这个样本中,近30万个物体将有5个$σ$视差测量值,近700万个物体将有5个$σ$自行测量值,允许检测晕WD光度功能的关闭,并发现超过20万颗鲸鱼座ZZ星。通过将LSST数据与欧几里德和(或)罗马空间望远镜的观测相结合,将有可能实现广泛的波长覆盖,还将发现3,500多个带有碎片盘的WD,突出显示了将地面和空间飞行任务之间的数据相结合的优势。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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