2019ApJ...886...35D

Query : 2019ApJ...886...35D

2019ApJ...886...35D - Astrophys. J., 886, 35-35 (2019/November-3)

Age determination of galactic B-type stars in double-lined eclipsing binaries.

DASZYNSKA-DASZKIEWICZ J. and MISZUDA A.

Abstract (from CDS):

We present the results of age determination for galactic B-type main-sequence stars that are components of double-lined eclipsing binaries. Only detached systems are considered. We analyze 38 binary systems that meet such criteria. The analysis is based on evolutionary computations, and we consider that the age is determined if there is a common value from the radius-age diagrams and the agreement in the position of both components in the Hertzsprung-Russell diagram. In some cases, to meet these two conditions, it was necessary to adjust the value of the metallicity, Z, or/and the parameter of overshooting from the convective core, αov. We determine a consistent age for 33 of the 38 binaries. Additionally, we completed extensive computations, and for each system, we give the range of αov and Z for which a consistent solution exists. The age of the studied B-type main-sequence stars ranges, as counted from the Zero Age Main Sequence, from about 2.5 Myr to about 200 Myr.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): Early-type stars - Spectroscopic binary stars - Stellar evolutionary models - Eclipsing binary stars

Simbad objects: 52

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Number of rows : 52
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* MU Cas EB* 00 15 51.5603463336 +60 25 53.642838468   11.12 10.80     A0 58 0
2 * zet Phe SB* 01 08 23.0805843521 -55 14 44.736015873   3.908 4.014     B6V+B9V 243 0
3 NGC 869 OpC 02 18 57.0 +57 08 02           ~ 504 0
4 V* V615 Per EB* 02 19 01.6485064968 +57 07 19.013821536   13.401 13.047   12.5110 B5.9V 34 0
5 V* V799 Cas EB* 03 05 27.5447163552 +61 39 17.684361792   8.96 8.82     B9 42 0
6 Ass Per OB 2 As* 03 42.2 +33 26           ~ 350 0
7 HD 25833A SB* 04 06 55.8286148575 +33 26 46.929071509   6.83 6.87     ~ 264 0
8 HD 25833 ** 04 06 55.8351101323 +33 26 47.009585515       7.71   B3Vn 269 0
9 NGC 2169 OpC 06 08 31.0 +13 57 46   5.99 5.9     ~ 173 0
10 V* V1388 Ori EB* 06 10 59.1666130080 +11 59 41.484558444 6.67 7.44 7.50     B2V 70 0
11 V* IM Mon SB* 06 23 01.4692765176 -03 16 37.090499952   6.408 6.548     B3V 98 0
12 V* V578 Mon Y*O 06 32 00.6076651296 +04 52 40.886334120 8.01 8.72 8.55 8.09 8.28 B0V+B1V 127 0
13 NGC 2244 OpC 06 32 06.9 +04 54 19           ~ 673 1
14 NAME Rosette Nebula HII 06 32 26.76 +04 47 37.1           ~ 522 1
15 V* HI Mon EB* 06 55 49.0674417144 -04 02 35.798271792 8.67 9.53 9.45     B3/5II 41 0
16 V* LT CMa SB* 07 04 02.6212271136 -12 17 17.376277308 6.74 7.34 7.44     B5III 43 0
17 IC 2391 OpC 08 41 17.5 -53 03 00           ~ 871 0
18 V* CV Vel SB* 09 00 37.9905129264 -51 33 20.066036652 5.88 6.55 6.69     B2V 158 0
19 * 163 Car SB* 09 54 33.8842758792 -58 25 16.579713612 5.6 6.47 6.64     B2V 128 0
20 HD 92024 Pu* 10 36 08.3339354160 -58 13 04.358647920 8.11 8.90 9.00 9.63 8.94 B1III 71 0
21 V* DW Car SB* 10 43 10.0815693384 -60 02 11.745452652 9.02 9.83 9.85 10.03 9.59 B1III 80 0
22 * chi02 Hya SB* 11 05 57.5699938080 -27 17 16.272708396   5.64 5.71     B8V 119 0
23 V* V346 Cen EB* 11 42 49.6742604288 -62 26 05.401617756 7.64 9.58 9.57 9.28 8.471 B1/3II/III 99 0
24 V* EP Cru EB* 12 37 16.7487593592 -56 47 17.406515616   8.65 8.69     B5V 41 0
25 * eta Mus SB* 13 15 14.9353076188 -67 53 40.529009001   4.687 4.780     B7III+B7III 113 1
26 * alf Vir bC* 13 25 11.57937 -11 09 40.7501 -0.20 0.74 0.97 1.06 1.30 B1V 877 1
27 V* GG Lup SB* 15 18 56.3746551072 -40 47 17.596548564   5.495 5.604 5.613   B7V 146 0
28 V* V760 Sco SB* 16 24 43.7182304928 -34 53 37.529154204   7.16 7.05     B4V 176 0
29 V* V359 Ara RR* 16 41 02.7129360912 -56 03 15.401974464           ~ 5 0
30 V* U Oph SB* 17 16 31.7137908168 +01 12 37.998551304   5.941 5.921     B3V 388 1
31 V* V539 Ara SB* 17 50 28.3930000656 -53 36 44.664776352   5.60 5.71     B2/3Vnn 190 0
32 NGC 6475 OpC 17 53 44.1 -34 49 36           ~ 413 0
33 V* V906 Sco SB* 17 53 54.7731227 -34 45 09.785378   5.95 5.96     B9V+B9V 128 0
34 V* YY Ser Mi* 18 05 34.6462540920 -01 10 45.630644196   18.7   15.5   ~ 9 0
35 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1195 1
36 HD 171491 ** 18 35 08.2194599328 +00 02 34.755359100   8.596 7.99     B3IV 56 0
37 V* V1331 Aql EB* 18 44 12.7889815896 -01 33 15.562897560 7.53 8.05 7.81     B3II 71 0
38 V* YY Sgr SB* 18 44 35.8393954416 -19 23 23.033743368   10.25 10.17     B8/9II 75 1
39 HD 174884 EB* 18 52 40.3063548312 +04 03 11.755214640   8.14 7.998     B8V 41 0
40 V* DI Her SB* 18 53 26.2399243224 +24 16 40.792648332   8.46 8.47     B5III 274 0
41 V* V1665 Aql EB* 18 56 09.9028820904 +07 56 08.222019612   8.27 8.11     B9V 26 0
42 V* V380 Cyg SB* 19 50 37.3267754400 +40 35 59.135141652 4.86 5.613 5.680     B1.1III+B2.5/3V: 305 0
43 V* V453 Cyg SB* 20 06 34.9661707872 +35 44 26.269865844 7.83 8.52 8.40     B0.4IV+B0.7IV 215 0
44 V* V399 Vul SB* 20 25 10.8034700208 +21 29 18.843907200   6.96 7.06     B3IV-VB4V 38 0
45 V* V379 Cep SB* 20 43 13.6836908304 +57 06 50.370751800 6.17 6.591 6.334     B2III 155 0
46 V* V497 Cep El* 21 53 26.5461900984 +62 35 13.154096904   9.16 8.98     B3V+B5V 47 0
47 V* V398 Lac SB* 22 07 12.4092734448 +52 38 08.459276100   8.87 8.79     A0 32 0
48 V* AH Cep SB* 22 47 52.9412851944 +65 03 43.795145556 6.53 7.10 6.88     B0.2V+B2V 227 0
49 V* NY Cep SB* 22 58 39.7987260456 +63 04 37.752984732 7.23 7.74 7.4     B5 160 0
50 HD 218066 Be* 23 04 02.2270838832 +63 23 48.722060508 7.50 7.97 7.6     B1.5Vn 290 0
51 V* PV Cas SB* 23 10 02.5750345872 +59 12 06.149248560   9.98 9.86     B6V 159 0
52 Ass Ori OB 1a As* ~ ~           ~ 237 0

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