Brown dwarfs as ideal candidates for detecting UV aurora outside the Solar System: Hubble Space Telescope observations of 2MASS J1237+6526

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Table 3

Possible values and upper limits for the UV luminosities of 2MASS J1237+6526 (see text).

Type	Wavelength band	Flux	S∕N^(a)	Luminosity
	Å	erg s⁻¹ cm⁻²		watt
NUV exposures #3 + #4	3065–3110	1.6 × 10⁻¹⁵	3.8	2.1 × 10¹⁸
FUV exposure #9	1450–1650	7.9 × 10⁻¹⁶	3.5	1.0 × 10¹⁸
Ly-α exposures #1 + #2	1215.8–1215.5	6.2 × 10⁻¹⁶	1.9	7.6 × 10¹⁸

Notes. ^(a) Lowest value of S/N from the methods based on variances or counts (see main text).

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