ITP OpenIR  > 理论物理所2017年知识产出
AE Ursae Majoris - a delta Scuti star in the Hertzsprung Gap
Niu, JS; Fu, JN; Li, Y; Yang, XH; Zong, WK; Xue, HF; Zhang, YP; Liu, N; Du, B; Zuo, F; Fu, JN (reprint author), Beijing Normal Univ, Astron Dept, Beijing 100875, Peoples R China.
2017
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号467期号:3页码:3122-3139
文章类型Article
摘要We analyse the photometric data and spectroscopic data collected on the d Scuti star AE Ursae Majoris ( AE UMa). The fundamental and the first overtone frequencies are confirmed as f(0) = 11.625 60 c d(-1) and f(1) = 15.031 24 c d(-1), respectively, from the frequency content by analysing light curves over 40 nights, spanning from 2009 to 2012. Additionally, another 37 frequencies are identified as either the harmonics or the linear combinations of the fundamental and the first overtone frequencies, among which 25 are newly detected. The rate of period change of the fundamental mode is determined as (1/P-0)(dP(0)/dt) = 5.4(+/- 1.9) x 10(-9) yr(-1) as revealed from the O - C diagram based on the 84 newly determined times of maximum light combined with those derived from the literature. The spectroscopic data suggest that AEUMa is a Population I d Scuti star. With these physical properties, we perform theoretical explorations based on the stellar evolution codeMESA on this target, considering that the variation of pulsation period is caused by secular evolutionary effects. We finally constrain AE UMa with physical parameters as follows: mass of 1.805 +/- 0.055M(circle dot), radius of 1.647 +/- 0.032 x 10(11) cm, luminosity of 1.381 +/- 0.048(log L/L-circle dot) and age of 1.055 +/- 0.095 x 10(9) yr. AE UMa can be the (Population I) d Scuti star that locates just after the second turn-off of its evolutional track leaving the main sequence, a star in the phase of the Hertzsprung Gap with a helium core and a hydrogen-burning shell.
关键词Techniques: Photometric Techniques: Spectroscopic Stars: Individual: Ae Uma Stars: Oscillations Stars: Variables: Delta Scuti
学科领域Astronomy & Astrophysics
资助者Joint Fund of Astronomy of National Natural Science Foundation of China (NSFC) ; Joint Fund of Astronomy of National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences [U1231202] ; Chinese Academy of Sciences [U1231202] ; NSFC [11673003] ; NSFC [11673003] ; National Basic Research Program of China (973 Program) [2014CB845700, 2013CB834900] ; National Basic Research Program of China (973 Program) [2014CB845700, 2013CB834900] ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Joint Fund of Astronomy of National Natural Science Foundation of China (NSFC) ; Joint Fund of Astronomy of National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences [U1231202] ; Chinese Academy of Sciences [U1231202] ; NSFC [11673003] ; NSFC [11673003] ; National Basic Research Program of China (973 Program) [2014CB845700, 2013CB834900] ; National Basic Research Program of China (973 Program) [2014CB845700, 2013CB834900] ; Chinese Academy of Sciences ; Chinese Academy of Sciences
DOIhttp://dx.doi.org/10.1093/mnras/stx125
关键词[WOS]SERIES ENSEMBLE PHOTOMETRY ; STELLAR ASTROPHYSICS MESA ; SX PHOENICIS STARS ; EQUATION-OF-STATE ; PERIOD CHANGES ; BL CAMELOPARDALIS ; MASS STARS ; PULSATION ; OPACITIES ; ASTEROSEISMOLOGY
语种英语
资助者Joint Fund of Astronomy of National Natural Science Foundation of China (NSFC) ; Joint Fund of Astronomy of National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences [U1231202] ; Chinese Academy of Sciences [U1231202] ; NSFC [11673003] ; NSFC [11673003] ; National Basic Research Program of China (973 Program) [2014CB845700, 2013CB834900] ; National Basic Research Program of China (973 Program) [2014CB845700, 2013CB834900] ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Joint Fund of Astronomy of National Natural Science Foundation of China (NSFC) ; Joint Fund of Astronomy of National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences [U1231202] ; Chinese Academy of Sciences [U1231202] ; NSFC [11673003] ; NSFC [11673003] ; National Basic Research Program of China (973 Program) [2014CB845700, 2013CB834900] ; National Basic Research Program of China (973 Program) [2014CB845700, 2013CB834900] ; Chinese Academy of Sciences ; Chinese Academy of Sciences
WOS类目Astronomy & Astrophysics
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/22050
专题理论物理所2017年知识产出
通讯作者Fu, JN (reprint author), Beijing Normal Univ, Astron Dept, Beijing 100875, Peoples R China.
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Niu, JS,Fu, JN,Li, Y,et al. AE Ursae Majoris - a delta Scuti star in the Hertzsprung Gap[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,467(3):3122-3139.
APA Niu, JS.,Fu, JN.,Li, Y.,Yang, XH.,Zong, WK.,...&Fu, JN .(2017).AE Ursae Majoris - a delta Scuti star in the Hertzsprung Gap.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,467(3),3122-3139.
MLA Niu, JS,et al."AE Ursae Majoris - a delta Scuti star in the Hertzsprung Gap".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 467.3(2017):3122-3139.
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