Rodríguez, R, Schmidt, SJ, Jayasinghe, T, Stanek, KZ, Prieto, JL, Shappee, B, Kochanek, CS, Thompson, TA, Shields, J, Holoien, TW-S, Bersier, D and Brimacombe, J (2018) ASASSN-18di: discovery of a $ΔV \sim 10$ flare on a mid-M dwarf. Research Notes of the American Astronomical Association RN AAS, 2 (2). ISSN 2515-5172

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Abstract

We report and characterize a white-light superflare on a previously undiscovered M dwarf detected by the ASAS-SN survey. Employing various color-magnitude and color-spectral type relationships, we estimate several stellar parameters, including the quiescent V-band magnitude, from which we derive a flare amplitude of $\Delta V \sim 10$. We determine an r-band absolute magnitude of $M_{r} = 11.4$, consistent with a mid-M dwarf, and an approximate distance to the source of $2.2$ kpc. Using classical-flare models, we infer a flare energy of $E_{V} \simeq (4.1\pm 2.2)\times 10^{36}$ ergs, making this one of the strongest flares documented on an M dwarf.

Item Type:	Article
Uncontrolled Keywords:	astro-ph.SR; astro-ph.SR
Subjects:	Q Science > QB Astronomy Q Science > QC Physics
Divisions:	Astrophysics Research Institute
Publisher:	American Astronomical Society; IOP Publishing
Related URLs:	http://arxiv.org/abs/1804.04673v1
Date Deposited:	26 Apr 2018 09:53
Last Modified:	04 Sep 2021 02:44
DOI or ID number:	10.3847/2515-5172/aabe7d
URI:	https://researchonline.ljmu.ac.uk/id/eprint/8579

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