Nitrogen abundances of the Be-type stars in 30 Doradus

被引：4
|
作者：
Dufton, P. L. [1 ]
Langer, N. [2 ]
Lennon, D. J. [3 ]
Schneider, F. R. N. [4 ,5 ]
Evans, C. J. [6 ]
Sana, H. [7 ]
Taylor, W. D. [8 ]
机构：
[1] Queens Univ Belfast, Astrophys Res Ctr, Sch Math & Phys, Belfast BT7 1NN, North Ireland
[2] Univ Bonn, Argelander Inst Astron, Auf Dem Hugel 71, D-53121 Bonn, Germany
[3] Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Tenerife, Spain
[4] Heidelberger Inst Theoret Studien, Schloss Wolfsbrunnenweg 35, D-69118 Heidelberg, Germany
[5] Zentrum Astron Univ Heidelberg, Astron Rechen Inst, Monchhofstr 12-14, D-69120 Heidelberg, Germany
[6] Space Telescope Sci Inst, European Space Agcy ESA, ESA Off, 3700 San Martin Dr, Baltimore, MD 21218 USA
[7] Univ Leuven, Inst Sterrenkunde, Celestijnenlaan 200, B-3001 Leuven, Belgium
[8] Royal Observ Edinburgh, UK Astron Technol Ctr, Blackford Hill, Edinburgh EH9 3HJ, Scotland
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2024年 / 527卷 / 03期
基金：
欧洲研究理事会;
关键词：
stars: abundances; stars:; emission-line; Be; stars: evolution; stars: rotation; Magellanic Clouds; galaxies: star clusters: individual: Tarantula Nebula; VLT-FLAMES SURVEY; BLANKETED MODEL ATMOSPHERES; X-RAY BINARIES; MASSIVE STARS; CHEMICAL-COMPOSITIONS; POPULATION SYNTHESIS; RADIAL-VELOCITIES; HIGH FRACTION; EVOLUTION; SPECTRA;
D O I：
10.1093/mnras/stad3537
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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 v(e) sin i-estimates for this Be-type sample.
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收藏
页码：5155 / 5165
页数：11
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