2017A&A...600A..82G


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.13CEST23:43:39

2017A&A...600A..82G - Astronomy and Astrophysics, volume 600A, 82-82 (2017/4-1)

The VLT-FLAMES Tarantula Survey. XXV. Surface nitrogen abundances of O-type giants and supergiants.

GRIN N.J., RAMIREZ-AGUDELO O.H., DE KOTER A., SANA H., PULS J., BROTT I., CROWTHER P.A., DUFTON P.L., EVANS C.J., GRAFENER G., HERRERO A., LANGER N., LENNON D.J., VAN LOON J.T., MARKOVA N., DE MINK S.E., NAJARRO F., SCHNEIDER F.R.N., TAYLOR W.D., TRAMPER F., VINK J.S. and WALBORN N.R.

Abstract (from CDS):

Context. Theoretically, rotation-induced chemical mixing in massive stars has far reaching evolutionary consequences, affecting the sequence of morphological phases, lifetimes, nucleosynthesis, and supernova characteristics.
Aims. Using a sample of 72 presumably single O-type giants to supergiants observed in the context of the VLT-FLAMES Tarantula Survey (VFTS), we aim to investigate rotational mixing in evolved core-hydrogen burning stars initially more massive than 15M by analysing their surface nitrogen abundances.
Methods. Using stellar and wind properties derived in a previous VFTS study we computed synthetic spectra for a set of up to 21 NII-V lines in the optical spectral range, using the non-LTE atmosphere code FASTWIND. We constrained the nitrogen abundance by fitting the equivalent widths of relatively strong lines that are sensitive to changes in the abundance of this element. Given the quality of the data, we constrained the nitrogen abundance in 38 cases; for 34 stars only upper limits could be derived, which includes almost all stars rotating at νesini>200km/s.
Results. We analysed the nitrogen abundance as a function of projected rotation rate νesini and confronted it with predictions of rotational mixing. We found a group of N-enhanced slowly-spinning stars that is not in accordance with predictions of rotational mixing in single stars. Among O-type stars with (rotation-corrected) gravities less than log gc=3.75 this group constitutes 30-40 percent of the population. We found a correlation between nitrogen and helium abundance which is consistent with expectations, suggesting that, whatever the mechanism that brings N to the surface, it displays CNO-processed material. For the rapidly-spinning O-type stars we can only provide upper limits on the nitrogen abundance, which are not in violation with theoretical expectations. Hence, the data cannot be used to test the physics of rotation induced mixing in the regime of high spin rates.
Conclusions. While the surface abundances of 60-70 percent of presumed single O-type giants to supergiants behave in conformity with expectations, at least 30-40 percent of our sample can not be understood in the current framework of rotational mixing for single stars. Even though we have excluded stars showing radial velocity variations, of our sample may have remained contaminated by post-interaction binary products. Hence, it is plausible that effects of binary interaction need to be considered to understand their surface properties. Alternatively, or in conjunction, the effects of magnetic fields or alternative mass-loss recipes may need to be invoked.

Abstract Copyright: © ESO, 2017

Journal keyword(s): stars: early-type - stars: abundances - stars: rotation - galaxies: star clusters: individual: 30 Doradus - line: profiles - Magellanic Clouds - Magellanic Clouds

VizieR on-line data: <Available at CDS (J/A+A/600/A82): tablea1.dat tablea2.dat table2.dat>

Simbad objects: 118

goto Full paper

goto View the reference in ADS

Number of rows : 118

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9831 1
2 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5975 1
3 NGC 1761 As* 04 56 39 -66 29.0     9.94     ~ 97 0
4 LHA 120-N 11 HII 04 56 51.4 -66 24 24           ~ 240 0
5 NGC 1763 As* 04 56 51.5 -66 24 25     9.40     ~ 158 3
6 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15419 1
7 NAME 30 Dor 016 * 05 37 08.8775810516 -69 07 20.377571697 12.623 13.584 13.546   13.816 O2IIIf* 39 0
8 VFTS 35 * 05 37 22.7534775747 -69 12 09.795030201   17.08 16.91     O9.5IIIn 5 0
9 [M2002] LMC 168287 * 05 37 26.1754497549 -69 09 53.018510811   14.78 14.9     O9.7II((n)) 9 0
10 UCAC2 1803186 * 05 37 27.8245058582 -69 08 02.849851232 15.043 15.982 15.718 16.06 14.976 B1: 9 0
11 OGLE BRIGHT-LMC-ECL-14 SB* 05 37 30.9164810811 -69 11 06.997098192 14.193 14.840 14.621 14.49 13.915 O7.5II(f) 12 0
12 VFTS 70 * 05 37 33.8838149800 -69 08 58.256780996   17.13 16.85     O9.7II 9 0
13 UCAC2 1803216 * 05 37 34.7984164810 -69 08 01.273228649   15.43 15.4 15.50   O9.2III 8 0
14 2MASS6X J05373512-6909411 * 05 37 35.1304003120 -69 09 41.198254581 16.016 16.729 16.635   16.552 O9.5:IIIn 10 0
15 [ST92] 1-23 * 05 37 35.7370178256 -69 08 07.471520536 15.739 16.528 16.297   15.927 O9.7II-III((n)) 12 0
16 2MASS J05373664-6907318 SB* 05 37 36.6555370496 -69 07 31.828176761   13.44 13.58     O9.7Ib-II 9 0
17 [ST92] 1-27 * 05 37 37.5281291158 -69 08 20.457303894 15.424 16.202 16.068   15.692 O9.5IIIn 10 0
18 2MASS J05373778-6905455 SB* 05 37 37.7975947472 -69 05 45.491593342   15.13 15.03     O9.2III-IV 9 0
19 VFTS 103 * 05 37 39.2477510688 -69 11 34.348875553   16.67 16.20     O8.5III((f)) 7 0
20 IRSF J05373989-6905468 * 05 37 40.036 -69 05 47.41   16.19 16.20     O9.7II-III((n)) 9 0
21 VFTS 109 * 05 37 40.6000 -69 07 59.993   16.53 16.6     O9.7II:n 10 0
22 2MASS J05374092-6908442 SB* 05 37 40.8981993449 -69 08 44.203046852 16.052 16.829 16.633   16.491 O9/B0 12 0
23 VFTS 125 * 05 37 42.950 -69 10 35.12   16.87 16.6     F5 9 0
24 [M2002] LMC 169061 * 05 37 43.4022399966 -69 09 58.997881295   16.32 16.5     O9.5III:((n)) 11 0
25 VFTS 131 * 05 37 43.7432639772 -69 10 22.135175385   16.88 16.77     O9.7 8 0
26 VFTS 141 * 05 37 45.740 -69 09 13.33   15.36 15.32     O9.5II-III((n)) 11 0
27 [ST92] 1-58 * 05 37 45.8912237038 -69 10 21.982633284 15.790 16.327 16.167   15.944 O6:V 9 0
28 VFTS 145 SB* 05 37 46.080 -69 09 08.85   14.49 14.30     O8fp 8 0
29 VFTS 151 SB* 05 37 46.520 -69 09 08.79           O6.5II(f)p 10 0
30 IRSF J05374670-6909112 ** 05 37 46.710 -69 09 11.27   15.36 15.30     O9III((n)) 8 0
31 [ST92] 1-65 SB* 05 37 47.800 -69 09 14.86   14.2 14.3     O9.5III((n)) 8 0
32 UCAC2 1803283 SB* 05 37 50.011 -69 09 59.99 13.096 13.699 13.840 14.11 13.900 O7-8III((f)) 12 0
33 VFTS 172 SB* 05 37 50.130 -69 10 01.58           O9III((f)) 7 0
34 VFTS 177 * 05 37 51.0239394073 -69 06 10.525166335   14.87 14.63     O7n(f)p 7 0
35 TYC 9163-983-1 s*b 05 37 51.0379769443 -69 09 33.879108515   12.46 12.77 12.89   O9.7Iab 14 0
36 Brey 74a WR* 05 37 51.3383720439 -69 09 46.692195685 12.483 13.474 13.446 13.62 13.278 O3If* 31 0
37 NGC 2060 SNR 05 37 51.4470067818 -69 10 23.957283532   9.69 9.59     ~ 327 2
38 [M2002] LMC 169451 * 05 37 51.9316690463 -69 09 20.755689402   14.52 14.7     O7.5III((f)) 9 0
39 VFTS 188 * 05 37 52.3994305420 -69 10 51.202380930   17.12 16.82     O9.7:III: 9 0
40 [ST92] 1-85 * 05 37 53.6407 -69 10 12.488   16.22 16.3     O9/B0 11 0
41 [M2002] LMC 169602 * 05 37 55.3907310444 -69 10 20.796212803   15.9 16.1     O9/B0 11 0
42 [M2002] LMC 169636 * 05 37 56.0837949249 -69 10 38.931397722   16.31 16.4     O9.7II((n)) 11 0
43 [ST92] 1-93 SB* 05 37 56.2195544699 -69 11 50.772424631 14.388 15.069 14.798 14.72 14.239 O6Iafnp 13 0
44 UCAC2 1803310 * 05 37 56.9565885355 -69 08 21.163171095   15.6 15.8 15.95   O9.7II-III((n)) 10 0
45 NAME 30 Dor Region reg 05 38.0 -69 06           ~ 189 0
46 VFTS 226 * 05 38 00.9961404318 -69 14 21.677187154   15.89 15.92     O9.7III 9 0
47 VFTS 235 * 05 38 06.3510038981 -69 05 14.267115138   15.42 15.48     O9.7III 6 0
48 2MASS J05380840-6905446 SB* 05 38 08.4090067772 -69 05 44.490335058   13.94 14.04     O5III(n)(fc) 7 0
49 VFTS 253 * 05 38 10.3769069968 -69 14 33.698340576   15.22 15.18     O9.5II 6 0
50 VFTS 259 s*b 05 38 12.0223961940 -69 06 34.169823523   13.86 13.65     O6Iaf 9 0
51 2MASS J05381396-6907477 SB* 05 38 13.9611988165 -69 07 47.730724200   13.44 13.49     O3III-I(n)f* 13 0
52 H88 301 Cl* 05 38 16 -69 04.0   11.18 10.89     ~ 66 0
53 VFTS 304 * 05 38 19.1153586615 -69 04 58.123926600   15.86 15.94     O9.7III 6 0
54 Cl* NGC 2070 MEL 80 * 05 38 19.2536195732 -69 06 00.532645934   14.11 14.08     O8.5II((f)) 10 0
55 VFTS 328 * 05 38 22.3265603628 -69 13 15.222824718   15.79 15.90     O9.5III(n) 9 0
56 Cl* NGC 2070 MEL 70 SB* 05 38 23.3084133972 -69 07 16.085330832 13.332 14.261 14.169   14.051 O9.2II-III 16 0
57 RMC 133 SB* 05 38 23.7091310171 -69 05 03.565883616   12.43 12.49     O7/8II 28 0
58 VFTS 346 * 05 38 27.7586473142 -69 06 06.725267960   16.37 16.30     O9.7III 9 0
59 Cl* NGC 2070 SMB 107 * 05 38 29.4293104885 -69 05 21.209866080   14.99 14.80     O9.7 11 0
60 [P93] 222 * 05 38 30.740 -69 08 27.13   15.69 15.74     O9.7III 11 0
61 [PVL2015] 5 * 05 38 31.2265237225 -69 05 53.039689529   15.34 15.25     O9.5n 11 0
62 Cl* NGC 2070 SMB 131 * 05 38 33.0048 -69 05 13.083   15.2 15.26   15.47 O9.5(n) 11 0
63 VFTS 399 * 05 38 33.410 -69 11 59.05   15.91 15.83     O9IIIn 10 0
64 OGLE LMC553.25.029400 EB* 05 38 33.54 -69 05 21.7   15.99 16.03   15.915 O9.7 11 0
65 Cl* NGC 2070 SMB 401 * 05 38 33.840 -69 05 51.80   16.87 16.74   16.63 O9.5:n 9 0
66 OGLE LMC-LPV-76549 LP* 05 38 34.76 -69 04 50.3   16.93 17.039   15.316 O9.7 11 0
67 Cl* NGC 2070 SMB 158 * 05 38 35.84 -69 05 34.8   15.49 15.40   15.44 O9:V(n) 15 0
68 Cl* NGC 2070 MEL 47 * 05 38 37.718 -69 05 20.97 11.913 12.764 12.046   12.344 O6-6.5II(f) 18 0
69 Cl* NGC 2070 SMB 233 * 05 38 38.020 -69 05 08.58   16.04 16.13   16.41 O9.7 11 0
70 Cl* NGC 2070 SMB 194 * 05 38 38.260 -69 06 17.29   15.82 15.47   15.00 OV((f))nn 9 0
71 Cl* NGC 2070 SMB 346 * 05 38 38.520 -69 06 29.92   16.62 16.25   15.54 O9:III:(n) 12 0
72 OGLE LMC175.4 54 EB* 05 38 38.82 -69 05 25.5   15.59 15.46   15.123 Onn 11 0
73 Cl* NGC 2070 SMB 365 * 05 38 39.2700464659 -69 06 39.028168376   16.92 16.38   15.36 O5:Vn 13 0
74 [P93] 696 * 05 38 39.2823074974 -69 07 52.995900051 15.253 15.843 15.567   15.039 O9III 10 0
75 Cl* NGC 2070 SMB 455 * 05 38 39.750 -69 05 50.55   17.15 16.95     O((n)) 8 0
76 Cl* NGC 2070 SMB 206 * 05 38 39.750 -69 05 39.21 15.104 15.88 15.67   15.42 O((n)) 12 0
77 Cl* NGC 2070 SMB 124 * 05 38 40.360 -69 05 43.76   15.21 15.07   15.00 O6-7V((n)) 12 0
78 2MASS J05384109-6901458 * 05 38 41.093 -69 01 45.88 14.684 15.333 15.556   15.477 O9.7II-IIIn 10 0
79 Cl* NGC 2070 MEL 27 SB* 05 38 41.2976 -69 05 32.391   13.83 13.76   13.56 O9.7II 14 0
80 Cl* NGC 2070 MEL 27b SB* 05 38 41.380 -69 05 32.54   14.87 14.87     O9III 8 0
81 Cl* NGC 2070 SMB 266 * 05 38 41.810 -69 05 31.91   16.26 16.20     O6-7II(f) 8 0
82 Cl* NGC 2070 SMB 434 * 05 38 41.860 -69 05 32.40   17.02 16.94   15.70 O8-9p 9 0
83 Cl* NGC 2070 SMB 138 SB* 05 38 41.940 -69 06 29.62   15.38 15.11   14.69 O3.5III(f*) 14 0
84 Cl* NGC 2070 SMB 55 SB* 05 38 41.940 -69 05 13.00   14.14 14.11   14.55 O3-4((f))+OB+WN 8 0
85 NGC 2070 Cl* 05 38 42 -69 06.0     7.25     ~ 338 1
86 [P93] 956 * 05 38 42.3779 -69 04 24.743   15.58 15.58     O9.7(n) 13 0
87 OGLE LMC-ECL-21435 EB* 05 38 42.38 -69 04 43.1   16.01 15.94   15.889 O9.5(n) 12 0
88 RMC 136 Cl* 05 38 42.396 -69 06 03.36           ~ 1799 1
89 [P93] 1012 * 05 38 43.1030 -69 07 02.095   16.28 16.14     O9.5(n) 11 0
90 [P93] 1052 * 05 38 43.3868 -69 04 46.386   15.4 15.36     O8-9III:((n)) 10 0
91 [P93] 1133 * 05 38 44.2861419515 -69 07 16.634244315   16.71 16.49     O9.7(n) 10 0
92 VFTS 565 * 05 38 44.560 -69 04 55.09   16.6 16.55     O9.5: 10 0
93 MH 31 * 05 38 44.5648836224 -69 04 51.261031936   14.11 14.05     O3III(f*) 22 0
94 Cl* NGC 2070 SMB 259 * 05 38 44.6850 -69 05 13.907   16.16 16.09   16.52 O9.2III: 13 0
95 Cl* NGC 2070 MH 917 * 05 38 44.700 -69 05 41.01   17.1 16.92   17.09 O9.5II-III(n) 11 0
96 VFTS 574 * 05 38 44.8250043019 -68 57 34.602413050   15.77 15.89     O9.5IIIn 9 0
97 Cl* NGC 2070 SMB 171 * 05 38 44.970 -69 05 07.69   15.51 15.51   15.61 O9:((n)) 16 0
98 2MASS J05384509-6904157 * 05 38 45.095 -69 04 15.76   16.25 16.07     O4-5V((fc)) 11 0
99 Cl* NGC 2070 SMB 293 * 05 38 45.380 -69 05 24.44   16.38 16.38   16.55 O9.7: 11 0
100 Cl* NGC 2070 SMB 267 * 05 38 45.760 -69 05 13.29   16.23 16.16   16.25 O9.7 9 0
101 W61 7-7 SB* 05 38 46.1994 -69 06 16.007   13.88 13.80   13.73 O3III(f*) 22 0
102 Cl* NGC 2070 SMB 294 * 05 38 46.760 -69 05 48.75   16.42 16.34   16.40 O9.7III 13 0
103 Cl* NGC 2070 SMB 218 * 05 38 47.330 -69 06 17.70   15.91 15.89   15.89 O9.5IIInn 11 0
104 [P93] 1416 * 05 38 47.9176164478 -69 05 32.963356648   16.64 16.61   16.90 O9.7III(n) 12 0
105 Cl* NGC 2070 SMB 333 SB* 05 38 48.024 -69 06 12.27   16.61 16.56   16.63 O9.7III 11 0
106 W61 7-9 * 05 38 48.1964014921 -69 08 10.920332276 14.384 15.051 15.197   14.490 O5-6n(f)p 13 0
107 W61 7-19 * 05 38 52.7232784086 -69 06 43.254812978 13.481 14.132 13.937   13.702 O7II(f) 21 0
108 W61 7-18 SB* 05 38 52.9703182884 -69 07 45.407479068 13.795 14.467 14.242   13.848 O8Ib(f) 15 0
109 VFTS 711 * 05 38 59.2771592434 -69 08 12.372093642   16.79 16.48     O9.7III 8 0
110 IRSF J05390915-6912104 * 05 39 09.145 -69 12 10.45   16.88 16.46     O9.7II-III 10 0
111 CPD-69 470 s*b 05 39 14.5236869748 -69 16 42.471472434   12.35 12.26     O9.7IaNstr 14 0
112 VFTS 777 * 05 39 19.8944373060 -69 01 12.870203949   15.68 15.30     O9.2II 7 0
113 VFTS 782 * 05 39 23.8019503436 -69 10 54.526502602   15.83 15.47     O8.5III 7 0
114 VFTS 787 SB* 05 39 24.7892052504 -69 05 51.614562760   16.68 16.53     O9.7III 8 0
115 VFTS 807 * 05 39 35.140 -69 10 30.73   16.93 16.37     O9.5IIINstr 8 0
116 VFTS 819 * 05 39 37.8338337731 -69 13 33.026593390   17.19 16.79     ON8III((f)) 8 0
117 [SL63] 639 As* 05 39 39 -69 12.1   12.13 11.53     ~ 22 0
118 VFTS 843 * 05 39 43.3792130201 -69 01 22.371080276   15.83 15.88     O9.5IIIn 9 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2017A&A...600A..82G and select 'bookmark this link' or equivalent in the popup menu


2021.06.13-23:43:39

© Université de Strasbourg/CNRS

    • Contact