TESS Data for Asteroseismology: Light Curve Systematics Correction

Abstract

Data from the Transiting Exoplanet Survey Satellite (TESS) has produced of order one million light curves at cadences of 120 s and especially 1800 s for every ~27-day observing sector during its two-year nominal mission. These data constitute a treasure trove for the study of stellar variability and exoplanets. However, to fully utilize the data in such studies a proper removal of systematic noise sources must be performed before any analysis. The TESS Data for Asteroseismology (T'DA) group is tasked with providing analysis-ready data for the TESS Asteroseismic Science Consortium, which covers the full spectrum of stellar variability types, including stellar oscillations and pulsations, spanning a wide range of variability timescales and amplitudes. We present here the two current implementations for co-trending of raw photometric light curves from TESS, which cover different regimes of variability to serve the entire seismic community. We find performance in terms of commonly used noise statistics to meet expectations and to be applicable to a wide range of different intrinsic variability types. Further, we find that the correction of light curves from a full sector of data can be completed well within a few days, meaning that when running in steady-state our routines are able to process one sector before data from the next arrives. Our pipeline is open-source and all processed data will be made available on TASOC and MAST.

arXiv comment27 pages, 15 figures, accepted for publication in The Astrophysical Journal Supplement Series

References in corpus (33)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• Array Programming with NumPy
• Astropy: A Community Python Package for Astronomy
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• The K2 Mission: Characterization and Early results
• Kepler Presearch Data Conditioning I - Architecture and Algorithms for Error Correction in Kepler Light Curves
• The Transiting Exoplanet Survey Satellite: Simulations of planet detections and astrophysical false positives
• Asteroseismology of Solar-Type and Red-Giant Stars
• Kepler Asteroseismology Program: Introduction and First Results
• Testing Scaling Relations for Solar-Like Oscillations from the Main Sequence to Red Giants using Kepler Data
• eleanor: An open-source tool for extracting light curves from the TESS Full-Frame Images
• Photometric Variability in Kepler Target Stars. II. An Overview of Amplitude, Periodicity, and Rotation in First Quarter Data
• Galactic archaeology: mapping and dating stellar populations with asteroseismology of red-giant stars
• Giant star seismology
• Asteroseismology of solar-type stars
• HATS-6b: A Warm Saturn Transiting an Early M Dwarf Star, and a Set of Empirical Relations for Characterizing K and M Dwarf Planet Hosts
• Impact on asteroseismic analyses of regular gaps in Kepler data
• The asteroseismic potential of TESS: exoplanet-host stars
• The first view of $\delta$ Scuti and $\gamma$ Doradus stars with the TESS mission
• Transiting exoplanets from the CoRoT space mission IV: CoRoT-Exo-4b: A transiting planet in a 9.2 day synchronous orbit
• HATS-4b: A Dense Hot-Jupiter Transiting a Super Metal-Rich G Star
• Beyond the Kepler/K2 bright limit: variability in the seven brightest members of the Pleiades
• The Asteroseismic Target List (ATL) for solar-like oscillators observed in 2-minute cadence with the Transiting Exoplanet Survey Satellite (TESS)
• Precision Light Curves from TESS Full-Frame Images: A Difference Imaging Approach
• Detection and characterisation of oscillating red giants: first results from the TESS satellite
• TESS Cycle 1 observations of roAp stars with 2-min cadence data
• TESS Data for Asteroseismology (T'DA) Stellar Variability Classification Pipeline: Set-Up and Application to the Kepler Q9 Data
• Data preparation for asteroseismology with TESS
• HATS-43b, HATS-44b, HATS-45b, and HATS-46b: Four Short Period Transiting Giant Planets in the Neptune-Jupiter Mass Range
• Transit analysis of the CoRoT-5, CoRoT-8, CoRoT-12, CoRoT-18, CoRoT-20, and CoRoT-27 systems with combined ground- and space-based photometry
• Impact of gaps in the asteroseismic characterization of pulsating stars. I. On the efficiency of pre-whitening
• Finding the Needle in a Haystack: Detrending Photometric Timeseries Data of Strictly Periodic Astrophysical Objects
• TESS Data for Asteroseismology: Photometry

Cited by in corpus (3)

• TESS asteroseismology of the Kepler red giants
• Unveiling $\delta$ Scuti and $\gamma$ Doradus Hybrid Pulsation of HD 53166 and HD 53349 Plus Rich Frequencies in HD 52788 -- Catalogs of 70552 $\delta$ Sct and 8080 $\gamma$ Dor
• A probabilistic method for detecting solar-like oscillations using meaningful prior information