Table 4
Comparison of astrometric parameters of red hypergiants and its associated clusters.
| Star | Cluster | Separation | Distance | μ x | μ y | V LSR | |||
| (°) | (pc) | (mas yr-1) | (mas yr-1) | (km s-1) | |||||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | |||
|
|
|||||||||
| NML Cyg | 1610 ± 120 | −1.55 ± 0.42 | −4.59 ± 0.41 | −01.0 | |||||
| Cyg OB2 | 2.7 | 1500 | −1.22 ± 0.20 | −4.72 ± 0.24 | +07.0 ± 6.0 | ||||
| VY CMa | 1200 ± 120 | −2.80 ± 0.20 | +2.60 ± 0.20 | +22.0 | |||||
| NGC2362 | 1.3 | 1389 | −2.03 ± 0.31 | +2.47 ± 0.34 | +06.2 ± 8.9 | ||||
| S Per | 2400 ± 100 | −0.49 ± 0.23 | −1.19 ± 0.20 | −38.5 | |||||
| h Per | 1.5 | 2079 | −0.27 ± 0.26 | −0.90 ± 0.39 | −35.7 ± 2.0 | ||||
| χ Per | 1.5 | 2345 | −0.46 ± 0.24 | −0.23 ± 0.50 | −35.8 ± 7.1 | ||||
Notes. The first and second columns list the names of a red hypergiant and its associated cluster. The third column lists the separation between a star and the center of the cluster. The fourth to seventh columns list distance, proper motion eastward and northward and LSR velocity of red hypergiant or cluster. Parameters for NML Cyg are from this paper; parameters for VY CMa are from Zhang et al. (2012), except that VLSR is from Menten et al. (2006); Parameters for S Per are from Asaki et al. (2010). Parameters for clusters are from Kharchenko et al. (2005), except that VLSR of Cyg OB2 is from Kiminki et al. (2007, 2008).
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