Improved obs. & analysis of eclipsing and other variables, tracers of stellar evolution & challenges to theory

改进了 obs。

• 批准号: 6671-2007
• 负责人: Milone, Eugene
• 金额: $ 1.37万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=389387
• 关键词: Improved; obs.; analysis; eclipsing; other

Variables stars, especially those found in star clusters, are key research tools in understanding the intrinsic properties of the stars, their origins, evolution, and destinies.  With the help of a new photometric infrared filter system that will increase the precision of infrared variable star light curves, and with improved light curve modeling code and techniques, I expect to be able to obtain more precise and accurate parameters of stars than previously was possible. In addition, data obtained at the University of Calgary's Rothney Astrophysical Observatory will enable us to continue to make new variable star discoveries with the Baker-Nunn Patrol Camera, and to follow up those discoveries with observations with the 0.4-m and 1.8-m telescopes of the RAO and at other, well-sited and maintained observatories such as Mt. Laguna.  Through my involvement with the UVIT instrument on the Indo-Canadian ASTROSAT mission, UV data may be added to the broad suite of data to further refine both stellar temperatures and interstellar reddening for selected cases.  The improvement of further light curve analysis tools will permit data obtained from that mission, the GAIA mission, and others, to  yield the precision and accuracy required to test the next generation of stellar structure and evolution models.

变星，尤其是在星团中发现的变星，是了解恒星的内在特性、起源、演化和命运的关键研究工具。借助新的光度红外滤光片系统，该系统将提高红外变星的精度。光变曲线，并通过改进的光变曲线建模代码和技术，我希望能够获得比以前更精确的恒星参数。此外，在卡尔加里大学罗斯尼天体物理天文台获得的数据也将是可能的。使我们能够继续利用贝克-纳恩巡逻相机发现新的变星，并利用 RAO 的 0.4 米和 1.8 米望远镜以及其他位置良好且维护良好的天文台进行观测来跟踪这些发现通过我参与印度-加拿大 ASTROSAT 任务中的 UVIT 仪器，可以将 UV 数据添加到广泛的数据中，以进一步完善恒星温度和选定案例的星际红化进一步改进光变曲线分析工具将使从该任务、盖亚任务和其他任务获得的数据达到测试下一代恒星结构和演化模型所需的精度和准确度。