MOSES - MONET Star and Exoplanet Spectrograph

我们提出了莫奈恒星和系外行星光谱仪(MOSY)，这是我们在美国得克萨斯州麦克唐纳天文台运行的1.2米莫奈望远镜的高分辨率回声光谱仪。新仪器的主要目的是对类太阳恒星进行长期光谱监测。数百颗明亮的恒星将以高多普勒精度但短曝光时间进行监测，这一点在小型望远镜上存在着巨大的潜力。我们的主要目标是提高我们对恒星周围行星群的理解，包括恒星-行星系统的形成，以及我们生活的太阳系是典型的还是例外的。我们目前的目标是确定在木星或土星等轨道上有行星的恒星的比例，这需要像这里提议的那样进行长期的遗留调查。新的光谱仪每年将拍摄大约8000个光谱。利用同样的数据，我们将通过恒星色球调查对恒星进行长期活动监测。这对于理解包括磁周期在内的与活动有关的恒星变化是很重要的。我们的观测将采样太阳已知的活动周期的时间尺度。该仪器配置的特点是，在380-680 nm的大波长范围内，两根光纤的光谱分辨率为80,000-一根用于校准光，一根用于恒星光。拟议的仪器通过利用现有的莫奈设施和基础设施，理想地服务于我们的长期科学计划。

We propose the MONET Star and Exoplanet Spectrograph (MOSES), a High-Resolution Echelle Spectrograph for the 1.2m MONET telescope that we are operating at Mc Donald observatory, Texas, USA. The main purpose of the new instrument is a long-term spectroscopic monitoring program of sun-like stars. Several hundred bright stars will be monitored at high Doppler precision but short exposure times, for which a great potential exists at small telescopes.Our main goal is to improve our understanding of planet populations around stars, which includes the formation of star-planet systems and whether the solar system we live in is typical or an exception. Our immediate goal is to determine the fraction of stars with planets on orbits like Jupiter or Saturn, which requires requires long-term legacy surveys like the one proposed here. Approximately 8000 spectra shall be taken with the new spectrograph per year. With the same data we will carry out long-term activity monitoring of the stars through investigation of stellar chromospheres. This is important for understanding activity-related stellar variability including magnetic cycles. Our observations will sample timescales of activity cycles as known from the Sun. The instrument configuration is featuring a spectral Resolution of 80,000 over a large wavelength range of 380-680nm for two fibers – one forthe calibration light and one for the stellar light. The proposed Instrument ideally serves our long-term scientific plans by utilizing the existing MONET facility and infrastructure.