The very low mass multiple system LHS 1070. A testbed for model atmospheres for the lower end of the main sequence

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Volume 545 (September 2012)

A&A, 545 (2012) A85

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Table 2

Derived parameters for the LHS 1070 system.

Component A

Model	T _eff	log g	Radius	log(L)
	(K)	(cm s^-2)	(R_⊙ )	(L_⊙)

BT-Dusty	2900 ± 100	5.0	0.134 ± 0.005	−2.93 ± 0.090
BT-Settl	2900 ± 100	5.0	0.134 ± 0.005	−2.93 ± 0.090
MARCS	2900 ± 100	5.0	0.136 ± 0.005	−2.92 ± 0.090
DRIFT	2900 ± 100	5.0	0.136 ± 0.005	−2.92 ± 0.031
isochrones	2953	5.2	0.140	−2.88

Component B

Model	T _eff	log g	Radius	log(L)
	(K)	(cm s^-2)	(R_⊙ )	(L_⊙)

BT-Dusty	2500 ± 100	5.0	0.102 ± 0.004	−3.43 ± 0.105
BT-Settl	2500 ± 100	5.0	0.102 ± 0.004	−3.43 ± 0.105
MARCS	2600 ± 100	5.0	0.098 ± 0.002	−3.39 ± 0.086
DRIFT	2400 ± 100	5.0	0.106 ± 0.005	−3.46 ± 0.044
isochrones	2432	5.3	0.104	−3.48

Component C

Model	T _eff	log g	Radius	log(L)
	(K)	(cm s^-2)	(R_⊙ )	(L_⊙)

BT-Dusty	2400 ± 100	5.0	0.098 ± 0.002	−3.53 ± 0.090
BT-Settl	2400 ± 100	5.0	0.098 ± 0.002	−3.53 ± 0.090
MARCS	2500^a ± 100	5.0	0.100 ± 0.002	−3.44 ± 0.090
DRIFT	2300 ± 100	5.0	0.102 ± 0.005	−3.57 ± 0.034
isochrones	2234	5.3	0.098	−3.68

Notes. The luminosity L is computed from the radius and the effective temperature.

^(a)

Note that this value might be meaningless as there is no cooler available model.

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