A Search for Red Giant Solar-like Oscillations in All Kepler Data

Abstract

The recently published Kepler mission Data Release 25 (DR25) reported on ~197,000 targets observed during the mission. Despite this, no wide search for red giants showing solar-like oscillations have been made across all stars observed in Kepler's long-cadence mode. In this work, we perform this task using custom apertures on the Kepler pixel files and detect oscillations in 21,914 stars, representing the largest sample of solar-like oscillating stars to date. We measure their frequency at maximum power, ${\nu }_{\max }$, down to ${\nu }_{\max }\simeq 4\mu$Hz and obtain $\log (g)$ estimates with a typical uncertainty below 0.05 dex, which is superior to typical measurements from spectroscopy. Additionally, the ${\nu }_{\max }$ distribution of our detections show good agreement with results from a simulated model of the Milky Way, with a ratio of observed to predicted stars of 0.992 for stars with 10$\mu$Hz $<{\nu }_{\max }<270\mu$Hz. Among our red giant detections, we find 909 to be dwarf/subgiant stars whose flux signal is polluted by a neighbouring giant as a result of using larger photometric apertures than those used by the NASA Kepler Science Processing Pipeline. We further find that only 293 of the polluting giants are known Kepler targets. The remainder comprises over 600 newly identified oscillating red giants, with many expected to belong to the galactic halo, serendipitously falling within the Kepler pixel files of targeted stars.

16 pages, 13 figures. Accepted for publication in MNRAS. Online tables are available as ancillary files on this page. Updated flag descriptions provided in Table 1 provided online

References in corpus (11)

• The Gaia mission
• The Transiting Exoplanet Survey Satellite
• The UKIRT Infrared Deep Sky Survey (UKIDSS)
• The K2 Mission: Characterization and Early results
• Impact on asteroseismic analyses of regular gaps in Kepler data
• Gap interpolation by inpainting methods : Application to Ground and Space-based Asteroseismic data
• The K2 Galactic Archaeology Program Data Release 1: Asteroseismic results from Campaign 1
• Dipole modes with depressed amplitudes in red giants are mixed modes
• Rapid Rotation of Low-Mass Red Giants Using APOKASC: A Measure of Interaction Rates on the Post-main-sequence
• Asteroseismology of 1523 misclassified red giants using $\text{Kepler}$ data
• Asteroseismology of red giant stars

Cited by in corpus (20)

• APOKASC-3: The Third Joint Spectroscopic and Asteroseismic catalog for Evolved Stars in the Kepler Fields
• Chemical Evolution in the Milky Way: Rotation-based ages for APOGEE-Kepler cool dwarf stars
• Revisiting the impact of stellar magnetic activity on the detectability of solar-like oscillations by Kepler
• Active red giants: close binaries versus single rapid rotators
• HD-TESS: An Asteroseismic Catalog of Bright Red Giants within TESS Continuous Viewing Zones
• Astroconformer: The Prospects of Analyzing Stellar Light Curves with Transformer-Based Deep Learning Models
• Clumpiness: Time-domain classification of red-giant evolutionary states
• Multiscale entropy analysis of astronomical time series. Discovering subclusters of hybrid pulsators
• Measuring frequency and period separations in red-giant stars using machine learning
• Modeling Asteroseismic Yields for the Roman Galactic Bulge Time-Domain Survey
• Unveiling complex magnetic field configurations in red giant stars
• A simple method to measure numax for asteroseismology: application to 16,000 oscillating Kepler red giants
• The Swan: Data-Driven Inference of Stellar Surface Gravities for Cool Stars from Photometric Light Curves
• A probabilistic method for detecting solar-like oscillations using meaningful prior information
• FliPer${}_{Class}$: In search of solar-like pulsators among TESS targets
• The powerful lens galaxy cluster PLCK G287.0+32.9 (${\theta }_E\sim 43^{\prime \prime }$)
• Simplifying asteroseismic analysis of solar-like oscillators: An application of principal component analysis for dimensionality reduction
• The impact of rotation on the stochastic excitation of stellar acoustic modes in solar-like pulsators
• A 'Quick Look' at All-Sky Galactic Archeology with TESS: 158,000 Oscillating Red Giants from the MIT Quick-Look Pipeline
• Hidden oscillations in plain sight: identification of seismically unresolved red-giant asteroseismic binary candidates