2013A&A...557A..13B


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.09CET16:41:20

2013A&A...557A..13B - Astronomy and Astrophysics, volume 557A, 13-13 (2013/9-1)

Eclipsing high-mass binaries. I. Light curves and system parameters for CPD -51°8946, PISMIS 24-1, and HD 319702.

BARR DOMINGUEZ A., CHINI R., POZO NUNEZ F., HAAS M., HACKSTEIN M., DRASS H., LEMKE R. and MURPHY M.

Abstract (from CDS):

We present the first results of a comprehensive photometric O-star survey performed with a robotic twin refractor at the Universitaetssternwarte Bochum located near Cerro Armazones in Chile. For three high-mass stars, Pismis24-1, CPD-51°8946, and HD319702, we determined the period through the Lafler-Kinman algorithm and modelled the light curves within the framework of the Roche geometry. For Pismis24-1, a previously known eclipsing binary, we provide the first light curves and determined a photometric period of 2.36 days together with an orbital inclination of 61.8°. The best-fitting model solution to the light curves suggests a detached configuration. With a primary temperature of T1=42520K we obtained the temperature of the secondary component as T2=41500K. The CPD-51°8946 system is another known eclipsing binary for which we present a revised photometric period of 1.96 days with an orbital inclination of 58.4°. The system probably has a semi-detached configuration and a mass ratio q=M1/M2=2.8. If we adopt a primary temperature of T1=34550K, we obtain T2=21500K for the secondary component. The HD319702 system is a newly discovered eclipsing binary member of the young open cluster NGC6334. The system shows well-defined eclipses favouring a detached configuration with a period of 2.0-days and an orbital inclination of 67.5°. Combining our photometric result with the primary spectral type O8 III(f) (T1=34000K) we derive a temperature of T2=25200K for the secondary component.

Abstract Copyright:

Journal keyword(s): stars: fundamental parameters - stars: formation - binaries: eclipsing - binaries: spectroscopic - open clusters and associations: individual: NGC 6334 - open clusters and associations: individual: NGC 6357

VizieR on-line data: <Available at CDS (J/A+A/557/A13): cpd5118i.dat cpd5118r.dat hd31970i.dat hd31970r.dat pis24i.dat pis24r.dat>

Simbad objects: 38

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Number of rows : 38

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 IC 1805 OpC 02 32 42 +61 27.0   7.03 6.5     ~ 467 2
2 V* SZ Cam bL* 04 07 49.2860550827 +62 19 58.627126529 6.82 7.26 6.93     O9.5Vn 205 1
3 * tet01 Ori C ** 05 35 16.46375 -05 23 22.8486 4.20 5.15 5.13 4.91 4.73 O7Vp 1257 1
4 NAME Rosette OB Association As* 06 31.7 +04 58           ~ 132 0
5 NGC 2244 OpC 06 31 55 +04 56.5   5.26 4.8     ~ 556 4
6 HD 48099 Be* 06 41 59.2307767004 +06 20 43.538696992 5.38 6.32 6.37 6.30 6.35 O5V((f))z+O9:V 275 0
7 HD 53975 * 07 06 35.9656022838 -12 23 38.216531612 5.38 6.40 6.50 6.51   O7.5Vz 176 0
8 Cl Trumpler 14 OpC 10 43 56 -59 33.0   5.70 5.5     ~ 413 0
9 Cl Collinder 228 OpC 10 44 00 -60 05.2   4.58 4.4     ~ 184 0
10 Cl Trumpler 16 OpC 10 45 10 -59 43.0   5.35 5.0     ~ 415 0
11 V* V662 Car bL* 10 45 36.3216162059 -59 48 23.258984084 12.74 12.91 12.05 12.10   O5Vz+B0:V 41 0
12 HD 93403 SB* 10 45 44.1189478816 -59 24 28.162328313 6.72 8.46 8.27 8.35   O5.5III(fc)var 180 1
13 V* V1051 Cen Al* 11 37 48.4339787468 -63 19 23.517391104 6.28 7.18 7.16 8.11   O5.5V((f))+O8:V 130 1
14 IC 2944 HII 11 38 20.00 -63 22 22.0           ~ 148 0
15 V* V961 Cen SB* 13 16 04.8010733834 -62 35 01.487031096 7.51 9.16 9.32 8.82   O9.5III+B0Ib 91 1
16 CD-51 9788 * 16 07 23.9503399787 -52 10 55.636803604   11.61 11.29     OB- 3 0
17 HD 149404 s*b 16 36 22.5628576926 -42 51 31.909559692 5.23 5.88 5.52 6.90   O8.5Iab(f)p 221 1
18 HD 152219 Al* 16 53 55.6076307131 -41 52 51.497348038 6.950 7.705 7.552   7.267 O9.5III(n) 87 0
19 NGC 6231 OpC 16 54 08.51 -41 49 36.0   2.83 2.6     ~ 475 0
20 HD 152248 bL* 16 54 10.0614779606 -41 49 30.143138696 5.56 6.15 6.05     O7Iabf+O7Ib(f) 226 0
21 HD 319702 * 17 20 50.6127602130 -35 51 46.032286972 10.94 11.04 10.11 10.10   O8III 44 0
22 NGC 6334 HII 17 20 51 -36 06.9           ~ 563 0
23 Cl Pismis 24 OpC 17 24 43.0 -34 12 23   11.00 9.6     ~ 104 0
24 HD 319718 ** 17 24 43.490 -34 11 57.03 12.28 11.94 10.44 10.05   O3.5If* 81 0
25 ALS 18753 PM* 17 24 44.454 -34 11 58.85   14.45 13.44 15.000 13.048 O7.5V 12 0
26 Cl Pismis 24 17 * 17 24 44.730 -34 12 02.71 13.61 13.33 11.84 11.35 9.61 O3.5III(f*) 32 0
27 NGC 6357 HII 17 26.5 -34 12           ~ 245 0
28 HD 165246 ** 18 06 04.6786005245 -24 11 43.895418553 6.90 7.70 7.60 8.77   O8V(n) 68 0
29 HD 166734 s*b 18 12 24.6552422490 -10 43 53.059483541 9.36 9.49 8.42 7.33 6.47 O7.5Iabf 150 0
30 HD 167971 s*b 18 18 05.8954978252 -12 14 33.324312346 7.89 8.27 7.50 6.68 6.279 O8Iaf(n)+O4/5 269 0
31 M 16 OpC 18 18 48 -13 48.4   6.58 6.0     ~ 920 2
32 V* V1182 Aql bL* 18 55 23.1253977999 +09 20 48.087039876 8.73 9.10 8.64     O7V(n)((f))z+B 103 0
33 V* V448 Cyg bL* 20 06 09.9485954895 +35 23 09.614693894 7.89 8.45 8.16     O9.5V+B1Ib 140 0
34 Ass Cyg OB 1 As* 20 17.8 +37 38           ~ 239 1
35 V* V382 Cyg bL* 20 18 47.2203014045 +36 20 26.091543194 9.35 9.19 8.65     O6IVn+O5Vn 171 0
36 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 764 0
37 HD 199579 SB* 20 56 34.7781372461 +44 55 29.000769871 5.16 6.01 5.96     O6.5V((f))z 337 0
38 V* XZ Cep bL* 22 32 25.0789084365 +67 09 02.477089441   9.22 8.51     O9.5V 88 0

    Equat.    Gal    SGal    Ecl

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2019.12.09-16:41:20

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