Whole Earth Telescope observations of the highest amplitude rapidly oscillating Ap star known: 3 Weeks of observations at the SAAO

作为整个地球望远镜计划的一部分，我们将对一颗已知的快速振荡的化学奇特星星进行观测。这种类型的星星在其大气层中显示出非常异常的化学特征，这被认为是由于它们非常强的磁场而产生的。当分析这些恒星的亮度时，我们看到它们的亮度在3-21分钟的时间尺度上变化。这是由于它们的大气层脉动，导致星星温度的变化，从而导致光输出的变化。详细研究这些恒星需要持续的数据收集，这是由地球的昼夜周期所抑制的。我们的观测将成为全球望远镜活动的一部分，世界各地的许多望远镜将观测同一颗星星，消除昼夜周期的影响。这样，我们就可以更详细地分析星星，目的是发现为什么星星会有这样的行为。在所有的roAp星中，我们的目标星的亮度随着时间的推移变化最剧烈。目前我们还不确定这是为什么，但我们的观察将使我们能够测试许多理论。

We will conduct observations of a known rapidly oscillating chemically peculiar star as part of a whole earth telescope campaign. This type of star shows a very abnormal chemical signature in its atmosphere which is thought to arise as a result of their very strong magnetic fields. When analysing the brightness of these stars, the roAp stars, we see that they change in brightness on time scales of 3-21 minutes. This is a result of their atmospheres pulsating, causing changes in the star's temperature, and thus light output. To study these stars in detail requires continuous data collection, something that is inhibited by the day/night cycle of the Earth. Our observations will form part of a Whole Earth Telescope campaign where many telescopes around the world observe the same star, removing the effect of the day/night cycle. In doing so, we can analyse the star in much better detail with the aim of discovering why the star behaves as it does. Of all the roAp stars, our target shows the most dramatic change in its brightness over time. Currently we are unsure the reason for this, but our observations will allow us to test many theories.