2024MNRAS.527.5155D

Query : 2024MNRAS.527.5155D

2024MNRAS.527.5155D - Mon. Not. R. Astron. Soc., 527, 5155-5165 (2024/January-3)

Nitrogen abundances of the Be-type stars in 30 Doradus.

DUFTON P.L., LANGER N., LENNON D.J., SCHNEIDER F.R.N., EVANS C.J., SANA H. and TAYLOR W.D.

Abstract (from CDS):

A sub-set of the 67 Be-type stars observed in 30 Doradus during the VLT-FLAMES Tarantula Survey (VFTS) campaign have been analysed to estimate atmospheric parameters and chemical compositions, in particular their nitrogen abundance. Reliable results were found for 23 targets comprising the largest Large Magellanic Cloud sample currently available. The nitrogen abundance estimates have been compared with predictions from evolutionary models for rapidly rotating single stars (or non-interacting multiple systems) and for interacting binaries. The observations appear to be incompatible with all the targets having a single star evolutionary history. The results agree better with a binary evolutionary history with at least 30 per cent of the VFTS sample having apparently evolved by this pathway. These conclusions are consistent with a previous analysis of the ve sin i-estimates for this Be-type sample.

Abstract Copyright: © The Author(s) 2023. Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): stars: abundances - stars: emission-line, Be - stars: evolution - stars: rotation - Magellanic Clouds - galaxies: star clusters: individual: Tarantula Nebula

Simbad objects: 37

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Number of rows : 37
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 NGC 330 Cl* 00 56 18.55 -72 27 45.1 9.37 9.76 9.55   8.89 ~ 445 0
3 * gam Cas HXB 00 56 42.5310945 +60 43 00.264089 1.18 2.29 2.39 2.32 2.40 B0.5IVpe 1253 0
4 NGC 346 Cl* 00 59 04.4000 -72 10 39.000           ~ 547 0
5 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
6 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
7 VFTS 34 * 05 37 22.3060575384 -69 07 16.091380236   16.27 16.14     B1.5Ve 8 0
8 [ST92] 1-33 * 05 37 39.19 -69 08 40.9 16.025 16.832 16.528   15.907 B1V 9 0
9 VFTS 135 * 05 37 44.2046960256 -69 06 37.239549984   16.02 16.01     B1:V-IIIne 8 0
10 VFTS 152 * 05 37 46.6907186304 -69 06 19.531745532   15.57 15.32     B2IIIe 10 0
11 [ST92] 1-67 * 05 37 48.1970422416 -69 09 31.481880912 16.419 17.330 16.931   15.845 B1: 10 0
12 VFTS 194 * 05 37 54.1890607944 -69 05 46.108845456   16.2 16.08     B2V-IIIe+ 7 0
13 VFTS 196 * 05 37 54.2673889992 -69 01 44.553678492   15.63 15.58     B2IIIe+ 7 0
14 UCAC2 1803313 SB* 05 37 57.9546918576 -69 09 54.001830564 14.442 15.385 15.182 15.98 15.422 B2V 12 0
15 VFTS 237 * 05 38 06.630 -69 14 06.96   15.99 15.93     B1-1.5V-IVe 8 0
16 OGLE LMC-LPV-76162 LP* 05 38 14.733 -69 03 29.51   16.76 17.122   15.408 B1.5Ve+ 10 0
17 H88 301 Cl* 05 38 16 -69 04.0   11.18 10.89     ~ 80 0
18 VFTS 283 Be* 05 38 16.9995 -69 03 49.010   15.3 15.31     B1.5V-III(n)e 14 0
19 [HBC93] 250 Be* 05 38 17.9907375098 -69 04 09.662066378   14.91 14.731   14.488 B2III-II(n)e 15 0
20 [P93] 6 * 05 38 21.605 -69 03 14.27   16.93 16.76     B1.5-2Ve+ 7 0
21 2MASS J05382564-6906042 SB* 05 38 25.6084915440 -69 06 04.312612476 15.263 16.167 16.142   15.750 O9?V: 11 0
22 VFTS 395 * 05 38 33.200 -69 04 51.36   16.77 16.95     B1:e 5 0
23 RMC 135 WR* 05 38 33.6193296576 -69 04 50.510501688   12.63 13.48     WN7h+OB 63 0
24 NAME 30 Dor Nebula SFR 05 38 36.0 -69 05 11           ~ 1276 2
25 RMC 136 Cl* 05 38 42.396 -69 06 03.36   5.81 5.40     ~ 2236 2
26 VFTS 683 * 05 38 55.5559585848 -68 58 56.188519572   16.23 16.33     B2Ve 8 0
27 [P93] 1799 * 05 38 57.162 -69 03 42.12   16.73 16.55     B1-2Ve 9 0
28 VFTS 738 * 05 39 05.4236292216 -68 57 37.361334816   14.57 14.55     B0.5IIIe+ 7 0
29 AL 382 Em* 05 39 10.9428092016 -68 56 46.838209524   14.74 14.58 14.69   B0.5IIIe+ 11 0
30 [SL63] 639 As* 05 39 39 -69 12.1   12.13 11.53     ~ 31 0
31 VFTS 825 * 05 39 39.210 -69 11 41.72   16.53 16.20     B1.5-2V-IIIe 6 0
32 VFTS 835 * 05 39 40.840 -69 11 52.41           B1Ve 8 0
33 [P93] 2313 * 05 39 45.5830494648 -69 04 26.244846048 14.780 15.474 15.387   15.376 B0.7-1IIIne 11 0
34 2MASS J05394565-6912082 Y*? 05 39 45.6688405272 -69 12 08.255304792   15.79 16.193   15.685 B1.5IIIe+ 8 0
35 SHV 0540305-690431 SB* 05 40 10.3314607560 -69 03 04.965498396   15.39 15.37     B1.5IIIe+ 11 0
36 2MASS J05401282-6909103 SB* 05 40 12.8002320504 -69 09 10.286345916   16.54 16.36     B1-3V-IIIe+ 10 0
37 LB 1 HB* 12 12 38.4817132752 +26 38 11.465098044   13.0       B9.5 15 0

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