Python Leap Second Management and Implementation of Precise Barycentric Correction (barycorrpy)
Python Leap Second Management and Implementation of Precise Barycentric Correction (barycorrpy)
复制标题
Python闰秒管理与精确重心校正的实现(barycorrpy)
DOI:
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发表时间:
2018
期刊:
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通讯作者:
J. Wright
中科院分区:
文献类型:
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作者:
S. Kanodia;J. Wright
We announce barycorrpy (BCPy) , a Python implementation to calculate precise barycentric corrections well below the 1 cm/s level, following the algorithm of Wright and Eastman (2014). This level of precision is required in the search for 1 Earth mass planets in the Habitable Zones of Sun-like stars by the Radial Velocity (RV) method, where the maximum semi-amplitude is about 9 cm/s. We have developed BCPy to be used in the pipeline for the next generation Doppler Spectrometers - Habitable-zone Planet Finder (HPF) and NEID. In this work, we also develop an automated leap second management routine to improve upon the one available in Astropy. It checks for and downloads a new leap second file before converting from the UT time scale to TDB.