– 14 –
15
10
-1
5
0
-5
5
0
-10
-3.6
15
-1.8
0
1.8
3.6
-15
15
-10
10
-1
RV [m s ]
P=74.79 d
5
0
-5
0
5
10
15
Trend
(d?)
10
-1
P=28.15 d
-5
-10
RV [m s ]
c
10
P=7.2006 d
RV [m s ]
-1
RV [m s ]
15
b
P=10+ years
5
0
-5
-5
-10
-10
-30
-20
-10
0
10
Orbital phase [days]
20
30
0
500
1000
1500
2000
2500
Orbital phase [days]
Fig. 2.— Phase-folded RV measurements of the four signals discussed in the text. The 143
HARPS measurements are shown in red circles, 21 PFS measurements are shown in blue
squares and the green triangles correspond to the 20 HIRES observations. Each preferred
Keplerian model is shown as a black line.
Fig. 3.— Comparative liquid water habitable zones for the Sun and GJ 667C. The gray
areas indicate the theoretical inner edge for different fractional cloud coverage. The outer
edge is marked with a dashed line.