Year: 2021
Type: article
Abstract: Data from the Transiting Exoplanet Survey Satellite (TESS) have produced of the order of 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 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 meets expectations and is applicable to a wide range of 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 the websites of the TESS Asteroseismic Science Operations Center and the Mikulski Archive for Space Telescopes.
Institutions: Aarhus University, Florida Gulf Coast University, University of Birmingham, European Space Agency, European Space Research and Technology Centre, Universidade do Porto, Institute of Astrophysics and Space Sciences, Centro de Astrofísica da Universidade do Porto, University of Hawaiʻi at Mānoa, University of Hawaii System, The University of Sydney, KU Leuven
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funders: National Science Foundation, National Aeronautics and Space Administration, Alfred P. Sloan Foundation, Aarhus Universitet, Stellar Astrophysics Centre, European Commission, National Research Foundation, Danmarks Grundforskningsfond, Fonds Wetenschappelijk Onderzoek, Nuclear Safety and Security Commission, KU Leuven, Vlaamse regering, University of California, Santa Barbara, Science Mission Directorate, Science and Technology Facilities Council, Fundação para a Ciência e a Tecnologia, Kavli Institute for Theoretical Physics, University of California, Santa Barbara
Awards: G1871477277, G205717340, PiCAROS: Pulsation Coupling And ROtation in Stars, G4180811105, BY COVERING A SOLID ANGLE NEARLY 400 TIMES LARGER THAN A SINGLE KEPLER/K2 FIELD PHOTOMETRY FROM TESS FULL FRAME IMAGES (FFIS) IS EXPECTED TO REVOLUTIONIZE TIME-DOMAIN ASTRONOMY OVER THE COMING YEARS. HOWEVER LIGHT CURVES FROM FFIS WILL NOT BE A STANDARD TESS DATA PRODUCT AND HENCE THE SUCCESS OF SCIENCE FROM FFIS RELIES ON EFFORTS BY THE COMMUNITY. HERE WE PROPOSE TO DEVELOP AND RUN A COMPLETE END-TO-END PHOTOMETRY PIPELINE FOR TESS FFI DATA PRODUCING ANALYSIS-READY LIGHT CURVES FOR ALL FFI SOURCES. USING POWERFUL COMPUTING RESOURCES AND SOFTWARE DEVELOPED THROUGH COMMUNITY WORKSHOPS WITHIN THE TESS ASTEROSEISMIC SCIENCE CONSORTIUM THE LIGHT CURVES PRODUCED IN THIS PROGRAM WILL ENABLE A VAST ARRAY OF SCIENCE INVESTIGATIONS ACROSS STELLAR ASTROPHYSICS AND EXOPLANET SCIENCE., G434337789, G5261598906, G5454278309, G6901707268, PARADISE: Pushing AsteRoseismology to the next level withTESS, GaiA and the Sloan DIgital Sky SurvEy, G7463423176, Detection and characterization of planets orbiting oscillating red-giant stars with NASA's TESS mission, Kavli Institute for Theoretical Physics, G8935584975, G985207216
OpenAlex ID: W3195437132