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Full evolution of low-mass white dwarfs with helium and oxygen cores
文献类型：期刊论文
| 作者 | Panei, JA1,2; Althaus, LG1,2; Chen XF(陈雪飞)3 ; Han ZW(韩占文)3
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2007-12-01 |
| 卷号 | 382期号:2页码:779-792 |
| 关键词 | stars : evolution stars : interiors white dwarfs |
| ISSN号 | 0035-8711 |
| 产权排序 | 第三完成单位 |
| 通讯作者 | Panei, JA (reprint author), UNLP, Fac Ciencias Astron & Geofis, Paseo Bosque S-N, RA-1900 La Plata, Argentina. |
| 英文摘要 | We study the full evolution of low-mass white dwarfs with helium and oxygen cores. We revisit the age dichotomy observed in many white dwarf companions to millisecond pulsar on the basis of white dwarf configurations derived from binary evolution computations. We evolve 11 dwarf sequences for helium cores with final masses of 0.1604, 0.1869, 0.2026, 0.2495, 0.3056, 0.3333, 0.3515, 0.3844, 0.3986, 0.4160 and 0.4481 M.. In addition, we compute the evolution of five sequences for oxygen cores with final masses of 0.3515, 0.3844, 0.3986, 0.4160 and 0.4481 M.. A metallicity of Z = 0.02 is assumed. Gravitational settling, chemical and thermal diffusion are accounted for during the white dwarf regime. Our study reinforces the result that diffusion processes are a key ingredient in explaining the observed age and envelope dichotomy in low-mass helium-core white dwarfs, a conclusion we arrived at earlier on the basis of a simplified treatment for the binary evolution of progenitor stars. We determine the mass threshold where the age dichotomy occurs. For the oxygen white dwarf sequences, we report the occurrence of diffusion-induced, hydrogen-shell flashes, which, as in the case of their helium counterparts, strongly influence the late stages of white dwarf cooling. Finally, we present our results as a set of white dwarf mass-radius relations for helium and oxygen cores. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | CLOSE BINARY EVOLUTION ; NEUTRINO-PAIR BREMSSTRAHLUNG ; CRYSTALLINE LATTICE PHASE ; PULSAR PSR J1012+5307 ; M-CIRCLE-DOT ; THERMAL-CONDUCTIVITIES ; PULSATIONAL PROPERTIES ; DEGENERATE ELECTRONS ; STELLAR INTERIORS ; OPTICAL-DETECTION |
| 收录类别 | SCI |
| 原文出处 | http://mnras.oxfordjournals.org/content/382/2/779 |
| 语种 | 英语 |
| WOS记录号 | WOS:000251205400023 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/4435]  |
| 专题 | 云南天文台_大样本恒星演化研究组 |
| 作者单位 | 1.Facultad de Ciencias Astronómicas y Geofísicas, UNLP, Paseo del Bosque S/N, La Plata B1900FWA, Argentina 2.Instituto de Astrofísica La Plata, IALP, CONICET-UNLP 3.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China |
| 推荐引用方式 GB/T 7714 | Panei, JA,Althaus, LG,Chen XF,et al. Full evolution of low-mass white dwarfs with helium and oxygen cores[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2007,382(2):779-792. |
| APA | Panei, JA,Althaus, LG,Chen XF,&Han ZW.(2007).Full evolution of low-mass white dwarfs with helium and oxygen cores.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,382(2),779-792. |
| MLA | Panei, JA,et al."Full evolution of low-mass white dwarfs with helium and oxygen cores".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 382.2(2007):779-792. |
入库方式： OAI收割
来源：云南天文台
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