PASS: An All Sky Survey for the Detection of Transiting Extrasolar Planets and for Permanent Variable Star Tracking
PASS: An All Sky Survey for the Detection of Transiting Extrasolar Planets and for Permanent Variable Star Tracking
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PASS：用于探测凌日系外行星和永久变星跟踪的全天巡天
DOI：
10.1086/425151
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发表时间：
2004
影响因子：
3.5
通讯作者：
L. Doyle
中科院分区：
文献类型：
--
作者：
H. Deeg;R. Alonso;J. Belmonte;K. Alsubai;K. Horne;L. Doyle
概述了永久性全天巡天(PASS)项目。PASS的主要目标是探测整个天空中所有凌日的巨行星，完成∼5.5-10.5等恒星系统的探测。由于样本恒星相当明亮且相对较近，PASS探测到的行星非常适合任何后续的地面或天基仪器研究。这项调查还将允许开展关于任何类型的时间天文现象的各种工作，目的是以高时间分辨率对变星进行永久的全天跟踪。该仪器由带有广视场光学的CCD摄像机阵列组成，从它们的观测位置可以看到整个天空。对仪器噪声源的计算和随后的模拟表明，所提出的设计能够实现对凌日进行全天测量的主要目标。附录中给出了非制导恒星图像测光的信噪比公式，以及基于观测覆盖范围和仪器占空比的行星凌日探测概率公式。
An overview is given of the Permanent All Sky Survey (PASS) project. The primary goal of PASS is the detection of all transiting giant planets in the entire sky, complete for stellar systems of magnitudes ∼5.5–10.5. Since the sample stars are fairly bright and relatively close, planets detected by PASS would be ideally suited for any follow‐up study with ground‐ or space‐based instrumentation. The survey would also allow the pursuit of a variety of work on temporal astronomical phenomena of any kind and is intended to lead to a permanent all‐sky tracking of variable stars with high temporal resolution. The instrument consists of arrays of CCD cameras with wide‐field optics that cover the entire sky visible from their observing locations. Calculations of the instrument’s noise sources and subsequent simulations indicate that the proposed design is able to achieve the prime objective of a full‐sky survey for transits. An equation for the signal‐to‐noise ratio from photometry of unguided stellar images is given in the Appendix, together with equations for the detection probability of planetary transits based on the observational coverage and the instrument’s duty cycle.