2015A&A...575A..34M


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.13CEST00:57:26

2015A&A...575A..34M - Astronomy and Astrophysics, volume 575A, 34-34 (2015/3-1)

The MiMeS survey of magnetism in massive stars: CNO surface abundances of Galactic O stars.

MARTINS F., HERVE A., BOURET J.-C., MARCOLINO W., WADE G.A., NEINER C., ALECIAN E., GRUNHUT J., PETIT V. (The MiMeS collaboration)

Abstract (from CDS):

The evolution of massive stars is still partly unconstrained. Mass, metallicity, mass loss, and rotation are the main drivers of stellar evolution. Binarity and the magnetic field may also significantly affect the fate of massive stars. Our goal is to investigate the evolution of single O stars in the Galaxy. For that, we used a sample of 74 objects comprising all luminosity classes and spectral types from O4 to O9.7. We relied on optical spectroscopy obtained in the context of the MiMeS survey of massive stars. We performed spectral modelling with the code CMFGEN. We determined the surface properties of the sample stars, with special emphasis on abundances of carbon, nitrogen, and oxygen. Most of our sample stars have initial masses in the range of 20 to 50M. We show that nitrogen is more enriched and carbon and oxygen are more depleted in supergiants than in dwarfs, with giants showing intermediate degrees of mixing. CNO abundances are observed in the range of values predicted by nucleosynthesis through the CNO cycle. More massive stars, within a given luminosity class, appear to be more chemically enriched than lower mass stars. We compare our results with predictions of three types of evolutionary models and show that for two sets of models, 80% of our sample can be explained by stellar evolution including rotation. The effect of magnetism on surface abundances is unconstrained. Our study indicates that in the 20-50M mass range, the surface chemical abundances of most single O stars in the Galaxy are fairly well accounted for by stellar evolution of rotating stars.

Abstract Copyright:

Journal keyword(s): stars: massive - stars: abundances - Sun: atmosphere - stars: evolution

Simbad objects: 81

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Number of rows : 81

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 HD 108 SB* 00 06 03.3885906204 +63 40 46.771682957 6.79 7.58 7.40     O4-8f?p 302 0
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9446 1
3 HD 13745 bC* 02 15 45.9348133590 +55 59 46.728415082 7.22 7.99 7.90     O9.7II(n) 158 1
4 HD 14633 SB* 02 22 54.2920198726 +41 28 47.723244543 6.14 8.79 8.73 8.69   ON8.5V 207 0
5 BD+60 499 Y*O 02 32 16.7516820640 +61 33 14.995570935 10.27 10.85 10.31     O9.5V 59 0
6 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5669 1
7 HD 24431 ** 03 55 38.4225403937 +52 38 28.738582945 6.50 7.11 6.74 6.36 6.10 O9III 151 0
8 * ksi Per ** 03 58 57.9022917 +35 47 27.713205 3.190 4.080 4.060 3.88 3.89 O7.5III(n)((f)) 789 0
9 NGC 1624 OpC 04 40 36.0 +50 27 42     11.8     ~ 63 1
10 * alf Cam s*b 04 54 03.0103983 +66 20 33.636467 3.47 4.34 4.29 4.18 4.18 O9Ia 635 1
11 V* AE Aur Or* 05 16 18.1489437436 +34 18 44.347016027 5.48 6.18 5.96     O9.5V 524 1
12 HD 34656 Em* 05 20 43.0823042222 +37 26 19.213246169 5.87 6.77 6.76     O7.5II(f) 191 0
13 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14832 1
14 HD 35619 * 05 27 36.1462913996 +34 45 18.997406116 8.08 8.79 8.66     O7.5V((f))z 103 0
15 * ups Ori V* 05 31 55.8601879 -07 18 05.537157 3.30 4.36 4.63 4.75 5.01 O9.7V 379 0
16 * lam Ori A Em* 05 35 08.2792540686 +09 56 02.955355445 2.17 3.48 3.47     O8III((f)) 484 0
17 * tet01 Ori C ** 05 35 16.46375 -05 23 22.8486 4.20 5.15 5.13 4.91 4.73 O7Vp 1272 1
18 HD 36879 * 05 35 40.5264637356 +21 24 11.723003025 6.97 7.69 7.58     O7V(n)((f))z 132 0
19 * zet Ori A ** 05 40 45.527143 -01 56 33.26036   1.79 1.88     O9.2IbvarNwk 643 0
20 * mu. Col V* 05 45 59.8953630749 -32 18 23.164726112 3.84 4.90 5.18 5.30 5.57 O9.5V 457 0
21 HD 42088 * 06 09 39.5726383124 +20 29 15.455220620 6.73 7.58 7.57 8.45   O6V((f))z 231 0
22 HD 258691 * 06 30 33.3081907645 +04 41 27.531212864 9.78 10.27 9.70     O9V 28 0
23 HD 46056 Em* 06 31 20.8609777928 +04 50 03.842065994 7.60 8.36 8.16 8.16 8.09 O8Vn 202 0
24 HD 46106 * 06 31 38.3971787778 +05 01 36.401702672 7.33 8.08 7.93 7.76 7.66 O9.7III(n) 139 0
25 HD 46150 Em* 06 31 55.5205503719 +04 56 34.302522479 6.03 6.86 6.73 6.50 6.41 O5V((f))z 370 0
26 HD 46223 * 06 32 09.3066083011 +04 49 24.707398183 6.73 7.50 7.28 6.95 6.79 O4V((f)) 351 0
27 HD 46202 ** 06 32 10.4728 +04 57 59.818 7.60 8.36 8.19 7.98 7.86 O9.2V 256 0
28 HD 46485 * 06 33 50.9569280058 +04 31 31.615740046 7.92 8.60 8.27   8.10 O7V((f))nzvar? 125 0
29 HD 46966 ** 06 36 25.8880483410 +06 04 59.483890115 5.91 6.83 6.87     O8.5IV 190 0
30 HD 47129 SB* 06 37 24.0417003671 +06 08 07.376246443 5.23 6.11 6.06     O8I+O7.5III 368 0
31 HD 47432 Pu* 06 38 38.1876436469 +01 36 48.677975295 5.67 6.44 6.31 6.11 6.04 O9.7Ib 172 1
32 HD 55879 * 07 14 28.2530122374 -10 18 58.483790697 4.88 5.85 6.03 7.35   O9.7III 152 0
33 HD 57682 * 07 22 02.0544956184 -08 58 45.761168747 5.20 6.24 6.43     O9.2IV 232 0
34 CD-28 5104 s*b 07 55 52.8513057612 -28 37 46.787947260 9.39 10.13 9.94 10.12   O6Ifp 69 0
35 * zet Pup BY* 08 03 35.04754 -40 00 11.3321 0.89 1.98 2.25 2.36 2.58 O4I(n)fp 1092 1
36 HD 66788 * 08 04 08.5402852477 -27 29 08.858514821 8.44 9.92 9.83 9.85   O8/9(Ib) 52 0
37 HD 69106 * 08 14 03.7993590115 -36 57 07.936730901 6.12 7.020 7.128 8.02   O9.7IIn 110 0
38 HD 93250 * 10 44 45.0270200315 -59 33 54.681395850 6.73 8.12 7.50 8.38   O4III(fc) 291 0
39 CPD-59 2629 * 10 45 08.2353841063 -59 46 06.975974457 10.780 11.336 10.848   9.971 O8.5Vp 57 0
40 HD 148937 SB* 16 33 52.3867163783 -48 06 40.476619334 6.49 7.12 6.71 7.61   O6f?p 355 4
41 * mu. Nor s*b 16 34 05.0202815 -44 02 43.128156 4.05 4.99 4.94 6.36   O9.7Iab 258 0
42 * zet Oph Be* 16 37 09.5390545 -10 34 01.529471 1.73 2.58 2.56 2.46 2.50 O9.2IVnn 1724 2
43 HD 328856 * 16 46 33.3560164436 -47 04 50.956313538 8.32 9.95 9.48 9.19 8.485 O9.7II 39 1
44 HD 151804 s*b 16 51 33.7215112148 -41 13 49.928887100 4.45 5.29 5.22     O8Iaf 350 0
45 HD 152247 SB* 16 54 11.5170221125 -41 38 30.969538639 6.62 7.35 7.16 8.09   O9.2III 114 0
46 HD 152249 s*b 16 54 11.6391931444 -41 50 57.294733186 5.91 6.65 6.45     OC9Iab 217 0
47 HD 153426 * 17 01 13.0075706903 -38 12 11.888514524 6.79 7.61 7.47 8.49   O8.5III 87 0
48 HD 153919 HXB 17 03 56.7728262865 -37 50 38.912077679 6.06 6.78 6.51 6.08 5.90 O6Iafcp 756 1
49 HD 154368 s*b 17 06 28.3687923960 -35 27 03.759955171 6.10 6.63 6.13 7.12   O9.5Iab 264 0
50 HD 154643 * 17 08 13.9816706301 -35 00 15.670543148 6.76 7.42 7.20 8.23   O9.7III 46 1
51 HD 155806 Be* 17 15 19.2484405697 -33 32 54.307297319 4.61 5.52 5.53     O7.5V((f))z(e) 206 0
52 HD 155889 ** 17 15 50.7533188725 -33 44 13.256102872 5.68 6.54 6.55 7.60   O9.5IV 78 1
53 HD 156154 V* 17 17 27.0094090389 -35 32 12.005415836 8.19 8.64 8.04 8.94   O7.5Ib(f) 67 0
54 * 63 Oph * 17 54 54.0431493243 -24 53 13.544413171 5.35 6.24 6.20 7.33   O8II((f)) 165 0
55 HD 164492A ** 18 02 23.553 -23 01 51.06   7.54 7.60 7.52   O7.5Vz 34 0
56 * 15 Sgr s*b 18 15 12.9061049161 -20 43 41.787295583 4.64 5.42 5.37 5.27 5.19 O9.7Iab 232 0
57 * 16 Sgr SB* 18 15 12.9693179867 -20 23 16.689681401 5.25 6.05 6.02 5.94 5.86 O9.5III 177 0
58 HD 167771 SB* 18 17 28.5572968350 -18 27 48.426044262 5.81 6.65 6.54 7.43   O7III((f))+O8III 170 0
59 BD-13 4930 * 18 18 52.6748769663 -13 49 42.635131189 9.04 9.71 9.45   8.968 O9.7IIIp 90 0
60 HD 186980 * 19 46 15.9013986681 +32 06 58.160549378 6.72 7.56 7.48     O7.5III((f)) 111 0
61 HD 188209 s*b 19 51 59.0685711923 +47 01 38.420250587 4.61 5.55 5.63 5.54 5.64 O9.5Iab 288 0
62 * 9 Sge s*b 19 52 21.7651155105 +18 40 18.753390402 5.32 6.24 6.23     O7.5Iabf 275 1
63 HD 189957 * 20 01 00.0042530904 +42 00 30.818892996 6.93 7.84 7.82     O9.7III 92 0
64 HD 227757 * 20 07 12.7699757847 +36 21 33.433161468 8.63 9.41 9.27     O9.5V 54 0
65 HD 191612 SB* 20 09 28.6111448914 +35 44 01.287772714 7.40 8.07 7.80     O8fpe 212 0
66 V* V2011 Cyg SB* 20 12 33.1205906584 +40 16 05.442931142 7.32 7.85 7.55     O4.5V(n)((f)) 195 0
67 HD 192639 s*b 20 14 30.4275040181 +37 21 13.815126140 6.83 7.46 7.11     O7.5Iabf 268 0
68 HD 193443 ** 20 18 51.7093796362 +38 16 46.504188062 7.11 7.61 7.26     O9III 136 0
69 HD 199579 SB* 20 56 34.7781372461 +44 55 29.000769871 5.16 6.01 5.96     O6.5V((f))z 338 0
70 HD 201345 * 21 07 55.4153633777 +33 23 49.226678368   7.611 7.764     ON9.2IV 159 0
71 * 68 Cyg SB* 21 18 27.1855667264 +43 56 45.388423736 4.05 4.99 5.00     O7.5IIIn((f)) 359 0
72 HD 206183 * 21 38 26.2840282278 +56 58 25.455651545 6.75 7.55 7.41     O9.5IV-V 86 0
73 HD 207198 * 21 44 53.2790298387 +62 27 38.042162728 5.61 6.25 5.94 5.66 5.49 O8.5II 321 0
74 HD 207538 * 21 47 39.7898466603 +59 42 01.344202478 7 7.55 7.30     O9.7IV 177 1
75 * 19 Cep * 22 05 08.7884887056 +62 16 47.323982519 4.36 5.19 5.11 4.95 4.92 O9Ib 362 0
76 * lam Cep s*b 22 11 30.5750839949 +59 24 52.147736074 4.55 5.29 5.05 4.77 4.62 O6.5I(n)fp 646 1
77 HD 210809 s*b 22 11 38.6004905633 +52 25 47.950552363 6.7 7.61 7.56     O9Iab 194 0
78 * 10 Lac ** 22 39 15.6786372 +39 03 00.971152 3.650 4.670 4.880 4.98 5.19 O9V 719 0
79 HD 218195 ** 23 05 12.93161 +58 14 29.3496 7.91 8.62 8.44     O8.5III 67 0
80 HD 218915 s*b 23 11 06.9480376287 +53 03 29.651927910 6.32 7.22 7.20     O9.2Iab 184 1
81 NAME Local Group GrG ~ ~           ~ 6973 0

    Equat.    Gal    SGal    Ecl

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2020.07.13-00:57:26

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