Binarity as the Solution to the Stellar Evolution Enigma Posed by NGC 6791

Carraro Giovanni; Benvenuto Omar G.

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Binarity as the Solution to the Stellar Evolution Enigma Posed by NGC 6791

机译：二十年作为NGC 6791提出的恒星演进谜的解决方案

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Binary evolution is investigated as the source for the extreme horizontal branch (EHB) stars in the old and metal-rich open cluster NGC. 6791. Employing an updated version of our binary stellar evolution code, we demonstrate that EHB stars naturally emerge from the common- envelope phase. In sum, the binary model reproduces the observed (T-eff, log g) and temporal properties of the EHB overdensity tied to NGC 6971, without needing an ad hoc and anomalous mass-loss prescription.

机译：将二进制演变作为旧的和金属开放集群NGC中的极端水平分支（EHB）星的源。 6791.使用更新版本的我们的二进制恒星演变代码，我们证明了EHB恒星自然地从共同的信封阶段出现。总之，二元模型再现与NGC 6971相关的EHB过度的观察到的（T-eff，Log G）和时间特性，而不需要临时和异常的质量损失处方。

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来源
《The Astrophysical Journal. Letters》 |2017年第1期|共4页
作者
Carraro Giovanni; Benvenuto Omar G.;
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作者单位

Univ Padua Dipartimento Fis &

Astron Galileo Galilei Vicolo Osservatorio 3 I-35122 Padua Italy;

Univ Nacl La Plata Inst Astrofis La Plata CCT CONICET UNLP Paseo Bosque S-N B1900FWA La Plata Buenos Aires Argentina;

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正文语种 eng
中图分类天体力学（理论天文学）;
关键词
binaries: general; open clusters and associations: individual (NGC 6791); subdwarfs;

机译：二进制文件：一般;开放集群和协会：个人（NGC 6791）;subdwarfs;

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专利

1. Binarity as the Solution to the Stellar Evolution Enigma Posed by NGC 6791 [J] . Carraro Giovanni, Benvenuto Omar G. The Astrophysical Journal. Letters . 2017,第1期

机译：二十年作为NGC 6791提出的恒星演进谜的解决方案
2. Stellar Evolution in NGC 6791: Mass Loss on the Red Giant Branch and the Formation of Low-Mass White Dwarfs* ** [J] . Jasonjot S. Kalirai, P. Bergeron, Brad M. S. Hansen, The Astrophysical journal . 2007,第1期

机译：NGC 6791中的恒星演化：红色巨人分支上的质量损失和低质量白矮星的形成* **
3. STELLAR EVOLUTION IN NGC 6791: MASS LOSS ON THE RED GIANT BRANCH AND THE FORMATION OF LOW-MASS WHITE DWARFS [J] . Jasonjot S. Kalirai, P. Bergeron, Brad M. S. Hansen, The Astrophysical journal . 2007,第1Pt1期

机译：NGC 6791中的恒星演化：红色巨人分支上的质量损失和低质量白矮星的形成
4. Binarity in the Central Stars of Planetary Nebulae and its Relationship to Stellar Evolution: An Observational Perspective [C] . Todd C. Hillwig, George H. Jacoby, David Jones, European Workshop on White Dwarfs . 2017

机译：行星星云中央恒星的二郎及其与恒星演化的关系：观察观点
5. The ages of the old open clusters NGC 188, NGC 6791, Melotte 66, and NGC 2204 [D] . Monteith, Anne-Marie 1990

机译：旧的开放星团NGC 188，NGC 6791，Melotte 66和NGC 2204的年龄
6. Phylogeny and evolution of plant cyclic nucleotide-gated ion channel (CNGC) gene family and functional analyses of tomato CNGCs [O] . Mumtaz Ali Saand, You-Ping Xu, Jean-Pierre Munyampundu, 2015

机译：植物环状核苷酸门控离子通道（CNGC）基因家族的系统发生进化及番茄CNGC的功能分析
7. Binarity as the Solution to the Stellar Evolution Enigma Posed by NGC 6791 [O] . Giovanni Carraro, Omar G. Benvenuto 2017

机译：二郎作为恒星演进谜的解决方案，由NGC 6791提出
8. Reddening and Metallicity of NGC 6791 [R] . Montgomery, K. A., Janes, K. A., Phelps, R. L. 1994

机译：NGC 6791的红化和金属化

Binarity as the Solution to the Stellar Evolution Enigma Posed by NGC 6791

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