GJ 1214 reviewed - Trigonometric parallax, stellar parameters, new orbital solution, and bulk properties for the super-Earth GJ 1214b

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Table 7

Suggested new star-planet parameters as derived using the stellar mass as the only input parameter.

Parameter	Maximum	Expected	Standard
name	probability^†	value	deviation

Star mass [M_⊙]	0.176^a	–	0.0087

Star radius [R_⊙]	0.213	0.211	0.011
Star surface gravity [m s^-1]	1032	1109	220
log g [g in cm s^-1]^b	5.01	5.04	0.07
Star mean density [g cm^-3]	26.36	27.7	8.9

Planet radius [R_⊕]	2.80	2.72	0.24
Planet mass [M_⊕]	6.26	6.19	0.91
Planet surface gravity [m s^-2]	7.66	7.68	1.19
Planet mean density [g cm^-3]	1.56	1.69	0.61^c

Planet T_eq[K] (Bond albedo = 0)		576	14
Planet T_eq[K] (Bond albedo = 0.75)		407	11

Notes.Some of the distributions in Fig. 7 are strongly asymetric.

^(†)

Maximum of the marginalized posterior distribution;

^(a)

used as input;

^(b)

from light curve and Doppler analysis (no spectral adjustment);

^(c)

ρ_p < 2.40 g cm^-3 with a 95% c.l.

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