Preparing and Releasing the La Silla QUEST Variability Survey Data

准备和发布 La Silla QUEST 变异性调查数据

• 批准号: 1909101
• 负责人: Paolo Coppi
• 金额: $ 31.2万
• 依托单位: Yale University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-08-15 至 2022-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1909101&HistoricalAwards=false
• 关键词: Preparing; Releasing; La; Silla; QUEST

Data mining is a very effective method for doing scientific studies. The La Silla QUEST Survey (LSQ ) made for the detection of Supernovae and Kuiper belt objects, can be repurposed to give a very useful history of the variable sky in the southern hemisphere. In its six years operation, roughly half the sky was imaged an average of 200 times (several hundred square degrees over 1000-2000 times), making it suitable for variability timescales studies from hours to years down to faint visibility magnitudes. The data will be particularly useful in the areas overlapped by current and future variability surveys by extending their time baseline. The available light curves for both transient and persistent variable sources will be placed in a database accessible via the Internet with precomputed "signatures information on the variability and position". The pipeline reprocessed imaged data will also be made available. This data will be available to the citizen scientists like the American Association of Variable Star Observers (AAVSO), the Zooniverse, and the WorldWide Telescope by providing them with a plug-in to the AAVSO that lets their software access to LSQ light curves.This grant will preserve the valuable data from the La Silla Quest Variable Survey (LSQ) for future time variable studies of stellar phenomena. The data collected by the LSQ will be fully calibrated, cleaned, and reprocessed to correct for errors in photometry and astrometry caused by the CCD performance, charge effects for bright stars, and effects caused by the PSF. It will provide a global set of reference stars to improve differential photometry and provide light curves for persistent sources with accurate error bars. The light curve data will be made data searchable as well as in postage stamp "movies" for any location on the Southern Hemisphere sky with access to raw files and made accessible to the astronomical community and the public.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

数据挖掘是进行科学研究的一种非常有效的方法。 La Silla QUEST巡天（LSQ）是为了探测超新星和柯伊伯带天体而设计的，可以重新利用，以提供南半球变化天空的非常有用的历史。 在其六年的运行中，大约一半的天空平均成像200次（1000-2000次中有几百平方度），使其适合于从数小时到数年的变化时间尺度研究，直到微弱的可见度。在当前和未来变异性调查重叠的地区，通过延长其时间基线，这些数据将特别有用。瞬态和持久可变源的现有光变曲线将被放入一个可通过互联网访问的数据库，该数据库具有预先计算的“关于可变性和位置的特征信息”。还将提供管道再处理的成像数据。 这些数据将提供给公民科学家，如美国可变星星观测者协会（AAVSO），Zooniverse和WorldWide Telescope，为他们提供一个插件到AAVSO，让他们的软件访问LSQ光变曲线。这笔赠款将保存来自La Silla Quest Variable Survey（LSQ）的宝贵数据，用于未来恒星现象的时间变量研究。 LSQ收集的数据将被完全校准、清理和重新处理，以纠正由CCD性能、明亮恒星的电荷效应以及PSF造成的影响引起的测光和天体测量误差。它将提供一套全球参考星，以改进差示光度测定法，并提供带有精确误差条的持久光源的光变曲线。 光变曲线数据将成为南半球天空中任何位置的可搜索数据以及邮票“电影”，并可访问原始文件，并向天文学界和公众开放。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Persistent and occasional: Searching for the variable population of the ZTF/4MOST sky using ZTF Data Release 11

持续和偶然：使用 ZTF 数据版本 11 搜索 ZTF/4MOST 天空的可变群体

• DOI: 10.1051/0004-6361/202346077
• 发表时间: 2023
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: Sánchez-Sáez, P.;Arredondo, J.;Bayo, A.;Arévalo, P.;Bauer, F. E.;Cabrera-Vives, G.;Catelan, M.;Coppi, P.;Estévez, P. A.;Förster, F.
• 通讯作者: Förster, F.