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Table 4

NGC 4755: stellar fundamental parameters of the BCD system.

ID Other D λ 1 S.T T eff log    g M v M bol E(B−V) (mv−Mv)0 Vsin(i)
Arp designation [dex] [Å] [K] [dex] [mag] [mag] [mag] [mag] [km s-1]
1 NSV 6 008 dd 0.141 9.75 B7 Ia 12 680  < 2.80  −7.00B  −7.82F 0.38 11.59 80
5 CPD−59 4552 0.098 29.14 B2 Ia 20 710  < 2.80  −7.00B  −7.63 0.16 14.79pnm 70
6 ALS 2 816 0.116 47.63 B1 III 25 980 3.25  −3.70  −5.56 0.39 11.51 55
7 BS Cru 0.111 44.57 B1 III 23 610 3.02  −4.17  −5.68 0.17 13.39pnm ···   
8 CPD−59 4540 0.190 60.52 B3 V 20 220 4.22  −1.54  −3.16 0.36 10.31pnm 185
11 CPD−59 4530 0.291 65.23 B6 V 15 620  > 4.30  −0.64  −1.60 0.44 10.66pnm 290
106 BU Cru 0.078 26.45 B2 Ia 20 620  < 2.80  −7.00B  −9.84F 0.29 13.02 ···   
113 CPD−59 4532 0.144 53.74 B2 IV 25 890 3.89  −2.67  −4.58 0.22 12.14 ···   
117 CPD−59 4531 0.189 62.00 B3 V 20 240 4.21  −1.52  −3.13 0.39 11.20 400
201 EI Cru 0.122 47.11 B1 III 23 730 3.26  −3.62  −5.62 0.18 12.45 ···   
202 CX Cru 0.131 51.61 B2 IV 25 820 3.81  −3.07  −5.09 0.22 12.40 ···   
223 CC Cru 0.099 28.03 B2 Ia 18 710  < 2.80  −7.00B  −7.58 0.30 13.91pnm 125
305 CN Cru 0.108 61.49 B0 V 31 170 4.12  −3.07  −5.15 0.43 10.32pnm 165
306 CPD−59 4559 dd 0.079 51.63 B0 III 30 040 3.44  −4.22  −6.59 0.62 12.29 430
418 CPD−59 4542 0.118 44.11 B2 III 23 070 3.02  −4.05  −5.51 0.17 13.19 180
452 HD 312 079 0.166 54.87 B2 V 22 860 4.01  −2.22  −4.08 0.25 11.49 135
454 HD 312 080 0.163 51.15 B2 IV 22 990 3.83  −2.52  −4.09 0.20 11.86 100

Notes. 

(dd)

Stars with double Balmer discontinuity.

(B)

Values of Mv were adopted from Balona & Crampton (1974).

(F)

Mbol values were calculated using the bolometric corrections given by Flower (1996).

(pnm)

Possible non-member stars.

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