Open Access

Table 1.

O stars originating from NGC 6611.

Identifier Spectral type Projected distance Distance ruwe Member (b) Reference
from centre
arcminute (pc) pc
O stars

HD 168076 O3.5 V((f+)) + O7.5 V 1.7 (0.8) 8.382 F 1
BD–13° 4923 O4 V((f+)) + O7.5 V 2.6 (1.3) 2.544 F 1
HD 168075 O6.5 V((f)) + B0-1 V 1.4 (0.7) 1589 1.110 T 1
BD–13° 4927 O7 II(f) 1.5 (0.7) 1654 1.056 F 1
BD–13° 4929 O7 V + (B0.5 V + B0.5 V) 1.3 (0.6) 1609 1.746 F 1
HD 168137 O7 V + O8 V 4.2 (2.1) 1767 0.933 F 1
W222 O7 V((f)) 3.3 (1.6) 1653 1.203 T 2
W161 O8.5 V 4.4 (2.2) 1708 1.265 T 2
LS IV –13 14 O9 V 2.9 (1.5) 1716 0.913 T 2
W584 O9 V 11.2 (5.5) 1768 1.002 T 2
HD 168183 O9.5 III + B3-5 V/III 13.4 (6.6) 1935 1.415 F 1
BD–13° 4928 O9.5 V 0.5 (0.2) 1604 0.903 T 1
BD–13° 4930 O9.5 Vp 4.2 (2.1) 1580 0.843 T 1

Distant runaway O stars

UCAC2 27149134 (a) O3-4 V 56.2 (27.8) 1750 1.023 F 3
BD–14 5040 O5.5 V(n)((f)) 119.7 (59.2) 1615 0.855 F 4
HD 168504 O7.5 V(n)z 30.2 (14.9) 1623 1.670 F 4

Notes.

(a)

Spectral type estimated from photometry;

(b)

Membership based on Gaia analysis.

References. (1) Sana et al. (2009, 2012); (2) Evans et al. (2005); (3) Gvaramadze & Bomans (2008); (4) Maíz Apellániz et al. (2016).

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