Top Galactic radiusa

Bottom Galactic radius

Reference

kpc

kpc

7.6

5.8

Vallée ( [32] —Fig. 1)

7.8

5.3

Rand & Lyne ( [33] —Fig. 5)

7.5

4.8

Indrani & Deshpande ( [71] —Fig. 4)

7.4

5.1

Vallée ( [72] —Fig. 4)

5.9

4.2

Brown et al. ( [34] —Fig. 4)

7.2

5.8

Sun et al. ( [42] —Fig. 10a)

7.7

5.8

Noutsos et al. ( [73] —Fig. 7)

8

5.6

Van Eck et al. ( [24] —Fig. 6)

8

5.6

Xu & Han ( [23] —Fig. 4)

7

4.6

Andreasyan et al. ( [35] —abstract)

7.41 ± 0.20

5.26 ± 0.18

Mean and rms (all data)

7.65 ± 0.10

5.48 ± 0.13

Mean and rms (excluding the data from [34] and from [35]

7.58 ± 0.21

5.48 ± 0.22

Mean and rms (all data recently published—since 2008 or later)