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The Largest M Dwarf Flares from ASAS-SN

  • Authors: Sarah J. Schmidt, Benjamin J. Shappee, Jennifer L. van Saders, K.Z. Stanek, Jonathan S. Brown, C.S. Kochanek, Subo Dong, Maria R. Drout, Stephan Frank, T.W.-S. Holoien, Sean Johnson, Barry F. Madore, J.L. Prieto, Mark Seibert, Marja K. Seidel, and Gregory V.A. Simonian

2019 The Astrophysical Journal 876 115.

  • Provider: AAS Journals

Caption: Figure 2.

The log of the lower limit on V-band energy (﹩\mathrm{log}({E}_{V})﹩) as a function of spectral type. The lower-energy flares from M dwarfs with multiple flares (gray points, light-green histogram) are distinguished from the main sample of flares (black points, dark-green histogram). The lower-limit V-band energies range from ﹩\mathrm{log}({E}_{V}/\mathrm{erg})=32﹩ to 35 and are set by the detection limit of ASAS-SN (∼V < 16.5 mag, as shown in the red dashed lines). The spectral type distribution (dark blue) is comparable to a distribution drawn from the Bochanski et al. (2011) M dwarf luminosity function (light-blue dot-dashed line), where M3 and earlier dwarfs are underrepresented owing to the ASAS-SN detection limits. The lack of flares in the lower left corner is an observational effect; these flares would likely be smaller than ΔV = −1.0 (as shown by the orange line) and so unlikely to be found in the ASAS-SN search.

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