J/AJ/164/17ivo://CDS.VizieR/J/AJ/164/17doi:10.26093/cds/vizier.51640017CDSMendoza G.T.Davenport J.R.A.Agol E.Jackman J.A.G.Hawley S.L.2023-07-03T13:09:00Z2022-11-03T09:18:20ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frm-starsstellar-flaresvisible-astronomyStellar variability is a limiting factor for planet detection and characterization, particularly around active M-type stars. Here we revisit one of the most active stars from the Kepler mission, the M4 star GJ1243, and use a sample of 414 flare events from 11 months of 1-minute cadence light curves to study the empirical morphology of white-light stellar flares. We use a Gaussian process detrending technique to account for the underlying starspots. We present an improved analytic, continuous flare template that is generated by stacking the flares onto a scaled time and amplitude and uses a Markov Chain Monte Carlo analysis to fit the model. Our model is defined using classical flare events but can also be used to model complex, multipeaked flare events. We demonstrate the utility of our model using TESS data at the 10minute, 2minute, and 20s cadence modes. Our new flare model code is made publicly available on GitHub.2022AJ....164...17Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/164/17CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/AJ/141/50 : White-light flares on cool stars from Kepler (Walkowicz+, 2011)J/ApJS/207/15 : M dwarf flare spectra (Kowalski+, 2013)J/ApJS/209/5 : Superflares of Kepler stars. I. (Shibayama+, 2013)J/ApJS/211/9 : Variability in UV line emission of F-M stars (Loyd+, 2014)J/ApJ/829/23 : Stellar flares from Q0-Q17 Kepler LCs (Davenport, 2016)J/A+A/590/A11 : BVRI light curves of V374 Peg (Vida+, 2016)J/MNRAS/474/2094 : Inferring probabilistic stellar Prot (Angus+, 2018)J/MNRAS/483/5045 : R-band light-curve properties SN Ia (Papadogiannakis+, 2019)J/ApJ/876/115 : Optical follow-up of ASAS-SN M dwarf flares (Schmidt+, 2019)J/AJ/157/234 : ACRONYM. III. Candidate young low-mass stars (Schneider+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/164/17https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/164/17http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/164/17https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/164/17https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/164/17http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/164/17GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/164/17/table2Classical flare propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTpeak[539/1736] Peak time, daysdtimedoubleFWHM[0.0002/0.02] Full time width at half the max of the fluxdspect.line.widthdoubleAmp[0.003/0.48] Amplitude, relative unitsmeta.unit;src.var.amplitudedoublee_TpeakUncertainty in tpeakdstat.errorchare_FWHMUncertainty in FWHMdstat.error;phys.angSizechare_Amp[0.0002/0.05] Uncertainty in Ampstat.errordoubleInstSource; Kepler or TESSmeta.id;instrchar