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Table 1

Details of seven bow-shock-producing stars (stars 1–7) and one candidate bow-shock-producing star (star 8) detected around NGC 6357.

Star RA (2000) Dec (2000) V J Ks A Ks MKs Spectral type

1 17 27 11.23  −34 14 34.9 11.77 8.42 7.84 0.52  −3.84 O7.5:a (O7 V)
2 17 22 03.43  −34 14 24.1 13.59 8.94 8.01 0.75  −3.89 O5.5:a (O6.5-7 V)
3 or HD 319881 17 28 21.67  −34 32 30.3 10.14 7.54 7.10 0.43  −4.48 O6 Vnb (O5 V)
4 17 18 15.40  −34 00 06.1 11.80 8.19 7.53 0.57  −4.19 O6.5:a (O6 V)
5 or [N78] 34 17 22 05.62  −35 39 55.5 13.11 8.68 7.82 0.71  −4.04 O8/B0 III/Vc (O6.5 V)
6 17 22 50.02  −34 03 22.4 13.90 9.68 8.81 0.71  −3.05 (B0 V)
7 17 27 12.53  −33 30 40.0 12.18 9.21 8.65 0.51  −3.01 (B0 V)

8 17 24 05.62  −34 07 09.5 11.74 9.03 8.46 0.51  −3.20 (O9-9.5 V)

Notes. The last column provides spectroscopic and photometric (enclosed in brackets) spectral types of the stars (see text for details).

(a)

This work.

(b)

Drilling & Perry (1981).

(c)

Neckel (1984).

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