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Barycorrpy : Barycentric velocity calculation and leap second management

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Ada Coda
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Barycorrpy : Barycentric velocity calculation and leap second management

Postby Ada Coda » Sun Aug 12, 2018 6:04 pm

Barycorrpy : Barycentric velocity calculation and leap second management

Abstract: 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. Also included is a converter for JDUTC to BJDTDB.

Credit: Kanodia, S. ; Wright, J.T.

Site: https://github.com/shbhuk/barycorrpy
http://iopscience.iop.org/article/10.38 ... aa4b7/meta


Preferred citation method: http://adsabs.harvard.edu/abs/2018RNAAS...2a...4K

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