LAMOST-MRS光谱中可能的卫星污染分析

Q1 Earth and Planetary Sciences

Monthly Notices of the Royal Astronomical Society: Letters Pub Date : 2023-07-10 DOI:10.1093/mnrasl/slad095

M. Kovalev, O. Hainaut, Xuefei Chen, Zhanwen Han

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引用次数: 0

摘要

利用LAMOST数据发布10 (DR10)单时域场的中分辨率巡天(MRS)光谱，提出了假阳性双线光谱候选体(SB2)的检测方法。所有这些双星的次级成分径向速度接近于零，光谱线与太阳相似。这极有可能是满月照亮的半透明云层发出的光。然而，我们也怀疑，这种污染部分可能是由2022年初发射的低轨道人造卫星表面反射的太阳光造成的。我们利用档案轨道数据发现了几个可能的污染物候选者。我们提出了减少未来观测中这种污染风险的措施，以及在存档观测中发现这种污染的方法。

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Analysis of the possible satellite contamination in LAMOST-MRS spectra

We present the detection of false positive double-lined spectroscopic binaries candidates (SB2) using medium-resolution survey (MRS) spectra from the one time-domain field of LAMOST data release 10 (DR10). The secondary component in all these binaries has near zero radial velocity and solar-like spectral lines. Highly likely this is light from the semi-transparent clouds illuminated by the full Moon. However we also suspect that partially this contamination can be caused by a solar light reflected from the surface of low-orbital artificial satellites launched in the beginning of 2022. We found several possible contaminant candidates using archival orbital data. We propose measures to reduce risk of such contamination for the future observations and methods to find it in archived ones.

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来源期刊

Monthly Notices of the Royal Astronomical Society: Letters Earth and Planetary Sciences-Space and Planetary Science

CiteScore

8.80

自引率

0.00%

发文量

136

期刊介绍： For papers that merit urgent publication, MNRAS Letters, the online section of Monthly Notices of the Royal Astronomical Society, publishes short, topical and significant research in all fields of astronomy. Letters should be self-contained and describe the results of an original study whose rapid publication might be expected to have a significant influence on the subsequent development of research in the associated subject area. The 5-page limit must be respected. Authors are required to state their reasons for seeking publication in the form of a Letter when submitting their manuscript.