2012A&A...544A..76K


C.D.S. - SIMBAD4 rel 1.7 - 2019.07.21CEST11:42:50

2012A&A...544A..76K - Astronomy and Astrophysics, volume 544A, 76-76 (2012/8-1)

Nitrogen chronology of massive main sequence stars.

KOEHLER K., BORZYSZKOWSKI M., BROTT I., LANGER N. and DE KOTER A.

Abstract (from CDS):

Rotational mixing in massive main sequence stars is predicted to monotonically increase their surface nitrogen abundance with time. We use this effect to design a method for constraining the age and the inclination angle of massive main sequence stars, given their observed luminosity, effective temperature, projected rotational velocity and surface nitrogen abundance. This method relies on stellar evolution models for different metallicities, masses and rotation rates. We use the population synthesis code STARMAKER to show the range of applicability of our method. We apply this method to 79 early B-type main sequence stars near the LMC clusters NGC 2004 and N 11 and the SMC clusters NGC 330 and NGC 346. From all stars within the sample, 17 were found to be suitable for an age analysis. For ten of them, which are rapidly rotating stars without a strong nitrogen enhancement, it has been previously concluded that they did not evolve as rotationally mixed single stars. This is confirmed by our analysis, which flags the age of these objects as highly discrepant with their isochrone ages. For the other seven stars, their nitrogen and isochrone ages are found to agree within error bars, what validates our method. Constraints on the inclination angle have been derived for the other 62 stars,with the implication that the nitrogen abundances of the SMC stars, for which mostly only upper limits are known, fall on average significantly below those limits. Nitrogen chronology is found to be a new useful tool for testing stellar evolution and to constrain fundamental properties of massive main sequence stars. A web version of this tool is provided.

Abstract Copyright:

Journal keyword(s): stars: massive - stars: evolution - stars: rotation - stars: abundances - stars: early-type

Simbad objects: 86

goto Full paper

goto View the reference in ADS

Number of rows : 86

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 8999 1
2 Cl* NGC 330 ELS 57 *iC 00 54 54.5882511526 -72 32 09.900747446 14.57 15.63 15.81   16.05 B0.5V 9 0
3 Cl* NGC 330 ELS 40 *iC 00 55 03.3551628350 -72 34 13.367021419 14.18 15.14 15.27   15.46 B2III 8 0
4 OGLE J005523.34-723009.8 Be? 00 55 23.3287608181 -72 30 09.730305772 14.75 15.52 16.41   15.849 B2III 7 0
5 OGLE SMC-ECL- 3315 Al* 00 55 52.3951885251 -72 26 11.428716461 15.11 15.99 16.09   16.30 B3III 8 0
6 Cl* NGC 330 ELS 39 *iC 00 55 55.6632931767 -72 24 32.920555480 13.90 14.99 15.14   15.41 B0V 9 0
7 Cl* NGC 330 ELS 66 *iC 00 55 55.89 -72 31 20.1 15.04 15.91 15.91   16.07 B3III 6 0
8 Cl* NGC 330 ELS 45 *iC 00 56 05.59 -72 26 21.5 14.47 15.29 15.42   15.62 B2IV 9 0
9 Cl* NGC 330 ELS 97 *iC 00 56 17.1312235042 -72 27 18.069608305   16.21 16.40   16.488 B1V 6 0
10 NGC 330 Cl* 00 56 20.59 -72 27 12.5 9.37 9.76 9.55   8.89 ~ 358 0
11 Cl* NGC 330 ELS 110 *iC 00 56 20.672 -72 26 25.49   16.38 16.57     B2IV 8 0
12 Cl* NGC 330 ELS 120 *iC 00 56 42.6091713218 -72 27 27.907265799 15.66 16.45 16.50   16.76 B3:V-III 6 0
13 Cl* NGC 330 ELS 69 *iC 00 56 48.6408016455 -72 29 40.305636819 15.06 15.90 15.99   16.12 B3III 7 0
14 Cl* NGC 330 ELS 83 *iC 00 57 04.64 -72 22 54.0 15.16 16.04 16.02   16.25 B3III 7 0
15 2dFS 1206 *iC 00 57 15.2956636308 -72 27 34.082118200 13.92 14.90 15.04   15.16 B1V 9 0
16 AzV 193 Em* 00 57 37.1379674640 -72 23 56.102050442   19.16 14.93   15.46 B0V 13 0
17 AzV 192 *iC 00 57 37.3145523484 -72 21 54.116801731 13.07 14.21 14.31   14.57 B0.2III 14 0
18 Cl* NGC 330 ELS 59 *iC 00 57 52.0838154328 -72 29 52.031307338 14.87 15.70 15.76   15.87 B3III 6 0
19 Cl* NGC 346 ELS 106 *iC 00 57 52.2259567544 -72 15 28.404295120 14.93 15.95 16.08   16.23 B1V 6 0
20 Cl* NGC 330 ELS 51 *iC 00 57 57.59 -72 27 10.7 14.33 15.39 15.40   15.56 B1.5V 8 0
21 Cl* NGC 346 ELS 53 *iC 00 57 57.6681627788 -72 16 02.467053145 14.16 15.21 15.38   15.61 B0.5V 6 0
22 Cl* NGC 346 ELS 81 *iC 00 58 00.3769129069 -72 13 08.001626726 14.71 15.66 15.85   16.02 B2IIIn 6 0
23 Cl* NGC 346 ELS 82 *iC 00 58 08.3032427944 -72 14 16.697927616 14.74 15.65 15.84   16.01 B2III 6 0
24 Cl* NGC 346 ELS 84 *iC 00 58 13.0568719887 -72 06 02.906601343 14.76 15.72 15.89   16.10 B1V 7 0
25 [MA93] 1072 Em* 00 58 27.5663941573 -72 11 54.646363180   15.44 15.59     B0.5V 13 0
26 Cl* NGC 346 EIS 29906 Em* 00 58 49.709 -72 10 19.86   15.78 15.89   16.098 B1V 10 0
27 Cl* NGC 346 ELS 27 *iC 00 59 00.9388790536 -72 07 18.247451313 13.75 14.80 14.99   15.24 B0.5V 7 0
28 Cl* NGC 346 SSN 77 *iC 00 59 03.048 -72 10 44.17   15.65 15.88     B0.5Vn 9 0
29 NGC 346 Cl* 00 59 05.090 -72 10 33.24           ~ 438 0
30 Cl* NGC 346 ELS 70 *iC 00 59 15.5124036262 -72 13 52.263069616 14.51 15.61 15.81   16.01 B0.5V 6 0
31 Cl* NGC 346 ELS 109 *iC 00 59 19.44 -72 04 29.6 14.90 16.06 16.08   16.54 B1.5V 6 0
32 Cl* NGC 346 ELS 100 *iC 00 59 20.7463837727 -72 03 38.077794310 15.03 15.92 16.09   16.40 B1.5V 7 0
33 Cl* NGC 346 ELS 32 *iC 00 59 24.8654938745 -72 04 47.720934646   17.30 14.93   15.37 B0.5V 7 0
34 Cl* NGC 346 MPG 767 *iC 00 59 28.1049946445 -72 10 42.247783205 14.70 15.73 15.89   16.18 B1V 8 0
35 Cl* NGC 346 MPG 787 *iC 00 59 31.5680724078 -72 13 06.442795394 14.37 15.42 15.59   15.82 B0.5V 6 0
36 Cl* NGC 346 ELS 92 *iC 00 59 42.3979087158 -72 07 27.134674716 14.85 15.83 16.04   16.25 B1Vn 6 0
37 Cl* NGC 346 ELS 108 *iC 00 59 58.1286702603 -72 08 21.867847474 15.01 15.96 16.14   16.43 B1.5V 5 0
38 Cl* NGC 346 ELS 114 *iC 01 00 02.6672211048 -72 07 48.778417490 15.02 16.05 16.22   16.52 B1Vn 5 0
39 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5301 1
40 [ELS2006] N11 089 EB* 04 55 28.3334835878 -66 29 41.811307402 14.288 14.819 14.867   14.860 B2III 8 0
41 [ELS2006] N11 102 *iC 04 55 53.8587886213 -66 34 29.581410442   14.79 14.95     B0.2V 8 0
42 [ELS2006] N11 116 *iC 04 55 54.8024997955 -66 27 41.942832113 14.469 15.123 15.214   15.260 B2III 7 0
43 [ELS2006] N11 104 *iC 04 55 55.2295972431 -66 21 57.556936794 14.222 14.850 15.218     B1.5V 8 0
44 [ELS2006] N11 077 *iC 04 56 01.3604079380 -66 20 51.526082110 13.902 14.584 14.696   14.807 B2III 7 0
45 [ELS2006] N11 111 *iC 04 56 05.8525270616 -66 21 55.123032342 14.151 14.935 15.129   15.372 B1.5III 7 0
46 PGMW 1052 *iC 04 56 22.3107664507 -66 28 05.087272011 12.899 13.665 13.764   13.730 B0III 10 0
47 [L72] LH 9-68 *iA 04 56 28.7382936528 -66 28 47.590094691 14.223 15.074 15.295   15.561 O9.5V 8 0
48 [L72] LH 9-66 *iA 04 56 32.8855288088 -66 28 52.678093357 13.847 14.606 14.775   14.978 B1III 10 0
49 [L72] LH 9-45 *iA 04 56 42.6734654012 -66 29 45.667305627 12.819 13.546 13.657   13.715 B0.5III 10 0
50 PGMW 3086 *iC 04 56 44.2986642152 -66 23 05.096217117 14.408 15.099 15.222   15.361 B1.5V 8 0
51 PGMW 1351 *iC 04 56 44.5373506880 -66 30 03.803553310 14.536 15.109 15.624   15.305 B1Vn 9 0
52 [ELS2006] N11 046 *iC 04 56 44.6272747588 -66 34 20.854653384 12.874 13.850 13.856   14.109 O9.5V 8 0
53 LHA 120-N 11 HII 04 56 51.4 -66 24 24           ~ 225 0
54 [ELS2006] N11 120 *iC 04 57 15.2123752027 -66 22 29.832260837   15.12 15.24     B0.2Vn 8 0
55 [ELS2006] N11 114 *iC 04 57 37.6876925574 -66 24 48.696987199   14.94 15.15     B0Vn 8 0
56 [ELS2006] N11 095 *iC 04 57 37.9114087699 -66 24 59.838769744   14.71 14.89     B1Vn 9 0
57 [ELS2006] N11 117 *iC 04 57 44.4517507270 -66 23 59.461483861 14.342 15.073 15.224   15.387 B1Vn 7 0
58 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14185 1
59 Cl* NGC 2004 ELS 77 *iC 05 29 16.9387374849 -67 20 34.088646897 14.131 14.942 15.074   15.395 B0.5V 6 0
60 Cl* NGC 2004 ELS 100 *iC 05 29 29.8999514412 -67 18 21.984332793   15.11 15.29     B1Vn 7 0
61 Cl* NGC 2004 ELS 104 *iC 05 29 38.7795472676 -67 12 07.570067361 14.559 15.222 15.315   15.581 B1.5V 6 0
62 Cl* NGC 2004 ELS 81 *iC 05 29 52.8858078312 -67 18 14.489342329   14.91 15.11     B1V 6 0
63 Cl* NGC 2004 ELS 85 *iC 05 29 56.3414420502 -67 17 55.401214790 14.387 15.076 15.178   15.420 B2.5III 6 0
64 Cl* NGC 2004 ELS 105 *iC 05 30 10.2349704386 -67 18 42.161582576 14.591 15.288 15.368   15.608 B1.5V 6 0
65 Cl* NGC 2004 ELS 30 *iC 05 30 11.0507920026 -67 22 57.388428532 13.335 14.174 14.361   14.637 B0.2Ib 7 0
66 Cl* NGC 2004 MHF 124760 *iC 05 30 12.1745551666 -67 10 19.624791688 14.203 14.891 15.111   15.316 B0.7V 7 0
67 Cl* NGC 2004 ELS 65 *iC 05 30 13.1247697009 -67 21 06.837425835 14.255 14.941 14.993   15.171 B2.5III 6 0
68 Cl* NGC 2004 MHF 103207 *iC 05 30 13.5653135832 -67 14 27.257329079 13.875 14.518 14.722   15.048 B2III 8 0
69 Cl* NGC 2004 ELS 82 *iC 05 30 20.3924032194 -67 20 55.655280497 14.394 15.085 15.198   15.484 B1.5V 6 0
70 Cl* NGC 2004 MHF 87634 *iC 05 30 27.7952308029 -67 17 22.714626549 14.142 14.926 15.082   15.374 B1.5Vn 7 0
71 Cl* NGC 2004 ELS 74 *iC 05 30 29.0581233887 -67 22 53.081958810 14.196 15.045 15.188   15.487 B0.7-B1V 6 0
72 W61 18-2 *iC 05 30 34.5047807719 -67 17 34.801125359   14.78 14.93     B2III 13 0
73 Cl* NGC 2004 ELS 79 SB* 05 30 40.7551803975 -67 11 43.684431915 14.483 15.059 15.162 15.43 15.426 B2III 8 0
74 NGC 2004 Cl* 05 30 41.340 -67 17 21.83   9.6       ~ 257 0
75 Cl* NGC 2004 E 37 *iC 05 30 43.0775007293 -67 17 43.818895471   14.52 14.71     B2.5III 10 0
76 Cl* NGC 2004 BBBC 164 *iC 05 30 48.2397797176 -67 17 12.905497311   15.12 15.30     B2III 9 0
77 Cl* NGC 2004 ELS 110 *iC 05 30 50.4804 -67 10 38.388   15.13 15.32     B2III 6 0
78 Cl* NGC 2004 ROB D10 *iC 05 30 53.4201875246 -67 18 03.595270603   14.9 15.08     B2III 7 0
79 Cl* NGC 2004 ELS 20 *iC 05 30 53.8132012110 -67 15 48.685210352 12.934 13.573 13.733   13.866 B1.5II 7 0
80 Cl* NGC 2004 ROB D8 *iC 05 30 53.8697460714 -67 16 54.323075702 14.736 15.349 15.501   15.486 B2.5IIIn 7 0
81 Cl* NGC 2004 ELS 88 *iC 05 30 57.1604274339 -67 15 14.207163014 14.471 15.126 15.204   15.432 B2.5III 6 0
82 Cl* NGC 2004 ELS 95 *iC 05 30 59.2260238041 -67 15 31.683255098 14.504 15.166 15.304   15.530 B1.5V 6 0
83 Cl* NGC 2004 ELS 62 *iC 05 31 10.97 -67 22 51.8   14.67 14.90     B0.2V 6 0
84 Cl* NGC 2004 ELS 99 *iC 05 31 16.5499698722 -67 20 56.240163062 14.455 15.199 15.325   15.581 B2III 6 0
85 Cl* NGC 2004 ELS 107 *iC 05 31 45.1497352631 -67 23 02.199470924   15.07 15.32     B0.5V 5 0
86 Cl* NGC 2004 ELS 54 *iC 05 31 46.3770254267 -67 13 28.850796338 12.423 17.886 14.665   15.041 B2III 6 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2012A&A...544A..76K and select 'bookmark this link' or equivalent in the popup menu


2019.07.21-11:42:50

© Université de Strasbourg/CNRS

    • Contact