X-ray emission from the M9 dwarf 1RXS J115928.5-524717 - Quasi-quiescent coronal activity at the end of the main-sequence

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Table 3:

Ultracool M dwarfs with detected quasi-quiescent X-ray emission.
Star	Sp. type	$V \sin~i$	Bf	log $L_{\rm H\alpha}$ / $L_{\rm bol}$	log $L_{\rm X}$	log $L_{\rm X}/L_{\rm bol}$	Ref.(X-ray)
VB 10 ^a	M8	6	1.3	-4.4/-5.0	25.4	-4.9	Fleming et al. (2003) $^{\rm {1}}$
LP 412-31 ^a	M8	9	>3.9	-3.9/-4.4	27.2	-3.1	Stelzer et al. (2006)
TVLM 513-46546 ^b	M8.5	60	-	-4.8/-5.0	24.9	-5.1	Berger et al. (2008b)
LHS 2065 ^a	M9	12	>3.9	-4.0/-4.3	26.3	-3.7	Robrade & Schmitt (2008) $^{\rm {2}}$
1RXS J115928.5-524717 ^c	M9	25	-	-	26.0	-4.1	this work

^a Additional values from Reiners & Basri (2007); ^b from Mohanty & Basri (2003); ^c from Hambaryan et al. (2005).
$^{\rm {1}}$ Re-observed by Berger et al. (2008a); $^{\rm {2}}$ detected at specific times also by Schmitt & Liefke (2002).

Source LaTeX | All tables | In the text

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