FRA -- A new Fast, Robust and Automated pipeline for the detection and measurement of solar-like oscillations in time-series photometry of red-giant stars

Abstract

We developed, tested and validated a new Fast, Robust and Automated (FRA) tool to detect solar-like oscillations. FRA is based on the detection and measurement of the frequency of maximum oscillation power ${\nu }_{max}$, without relying on the detection of a regular frequency spacing to guide the search. We applied the FRA pipeline to 254 synthetic power spectra representative of TESS red giants, as well as 1689 red giants observed by Kepler and 2344 red giants observed by TESS. We obtain a consistency rate for ${\nu }_{max}$ compared with existing measurements of $\sim$ 99% for Kepler red giants and of $\sim$ 98% for TESS red giants. We find that using ${\nu }_{max}$ as an input parameter to guide the search for the large frequency separation $\Delta \nu$ through the existing Envelope AutoCorrelation Function (EACF) method significantly improves the consistency of the measured $\Delta \nu$ in the case of TESS stars, allowing to reach a consistency rate above 99%. Our analysis reveals that we can expect to get consistent ${\nu }_{max}$ and $\Delta \nu$ measurements while minimizing both the false positive measurements and the non-detections for stars with a minimum of four observed sectors and a maximum G magnitude of 9.5.

arXiv comment35 pages, 17 figures. Accepted for publication in Astronomische Nachrichten. This is the pre-peer reviewed (submitted) version

References in corpus (33)

• The PLATO 2.0 Mission
• Gravity modes as a way to distinguish between hydrogen- and helium-burning red giant stars
• The effective temperature scale of FGK stars. II. Teff : color : [Fe/H] calibrations
• Fast core rotation in red-giant stars revealed by gravity-dominated mixed modes
• Gaia Data Release 2: Mapping the Milky Way disc kinematics
• A new implementation of the infrared flux method using the 2MASS catalogue
• Asteroseismology of red giants from the first four months of Kepler data: Fundamental parameters
• Determining global parameters of the oscillations of solar-like stars
• Asteroseismology of 16000 Kepler Red Giants: Global Oscillation Parameters, Masses, and Radii
• The relation between $\Delta \nu$ and ${\nu }_{max}$ for solar-like oscillations
• Red-giant seismic properties analyzed with CoRoT
• Characterization of the power excess of solar-like oscillations in red giants with Kepler
• On detecting the large separation in the autocorrelation of stellar oscillation times series
• Characteristics of solar-like oscillations in red giants observed in the CoRoT exoplanet field
• Asteroseismology of solar-type stars
• Core rotation braking on the red giant branch for various mass ranges
• Asymptotic and measured large frequency separations
• The Octave (Birmingham - Sheffield Hallam) automated pipeline for extracting oscillation parameters of solar-like main-sequence stars
• The asteroseismic potential of TESS: exoplanet-host stars
• Solar-like oscillations in red giants observed with Kepler: comparison of global oscillation parameters from different methods
• PLATO as it is: a legacy mission for Galactic archaeology
• The art of fitting p-mode spectra: Part I. Maximum Likelihood Estimation
• A 20-Second Cadence View of Solar-Type Stars and Their Planets with TESS: Asteroseismology of Solar Analogs and a Re-characterization of pi Men c
• Detection and characterisation of oscillating red giants: first results from the TESS satellite
• Mass and Age of Red Giant Branch Stars Observed with LAMOST and \emph{Kepler}
• Prospects for Galactic and stellar astrophysics with asteroseismology of giant stars in the $TESS$ Continuous Viewing Zones and beyond
• Detecting Solar-like Oscillations in Red Giants with Deep Learning
• Testing the intrinsic scatter of the asteroseismic scaling relations with Kepler red giants
• HD-TESS: An Asteroseismic Catalog of Bright Red Giants within TESS Continuous Viewing Zones
• Automated approach to measure stellar inclinations: validation through large-scale measurements on the red giant branch
• The Bayesian Asteroseismology data Modeling pipeline and its application to $K2$ data
• KIC 7955301: a hierarchical triple system with eclipse timing variations and an oscillating red giant
• A probabilistic method for detecting solar-like oscillations using meaningful prior information

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• A simple method to measure numax for asteroseismology: application to 16,000 oscillating Kepler red giants
• Testing the wavelength dependence of oscillations and granulation in red giants using Kepler and TESS