欧几里德星震学与柯伊伯带天体
Euclid Asteroseismology and Kuiper Belt Objects
摘要:
欧几里德,这主要是一个暗能量/宇宙学的任务,可能有一个微透镜的组成部分,包括也许四个专门的一个月的运动,旨在银河系的隆起。我们表明,这样一个计划将产生优秀的辅助科学,包括约100,000巨星的小行星地震探测,以及约1000柯伊伯带天体(KBO)的检测,下降到2- 2.5等以下的观测到的KBO光度函数在I ~26的突破。对于低于突破点的400 KBO,欧几里得将测量精确的轨道,分数周期误差<~ 2.5%。
英文摘要:
Euclid, which is primarily a dark-energy/cosmology mission, may have a microlensing component, consisting of perhaps four dedicated one-month campaigns aimed at the Galactic bulge. We show that such a program would yield excellent auxilliary science, including asteroseimology detections for about 100,000 giant stars, and detection of about 1000 Kuiper Belt Objects (KBOs), down to 2--2.5 mag below the observed break in the KBO luminosity function at I ~26. For the 400 KBOs below the break, Euclid will measure accurate orbits, with fractional period errors <~ 2.5%.
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