| The search for DA double white dwarf binary candidates from SDSS DR14 | |
Yan, Huahui1,2; Zhao, Jingkun2; Shi, Weibin1; Guo, Jincheng3; Li ZW(李振威)4 ; Lei, Zhenxin5; Zhao, Gang2,6
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| 发表期刊 | ASTRONOMY & ASTROPHYSICS
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| 2024-04-09 | |
| 卷号 | 684 |
| DOI | 10.1051/0004-6361/202347617 |
| 产权排序 | 第4完成单位 |
| 收录类别 | SCI ; EI |
| 关键词 | techniques: radial velocities binaries: general white dwarfs |
| 摘要 | Aims. Double white dwarf (DWD) binaries are one of the channels through which type Ia supernovae explosions occur. With the release of more and more sky survey data, the search for additional DWDs has become a possibility. We utilized the spectroscopic data from SDSS DR14 to search for DWD binaries based on variations in radial velocities (RVs). Methods. We obtained a sample of 4089 DA white dwarfs (WDs) with two or more spectra from SDSS DR14, and their RVs were derived using the cross-correlation function. Using the chi-squared (chi(2)) distribution of RVs as a base, we calculated the corresponding logarithmic probabilities (log p) for different degrees of freedom. Results. We selected the targets with log p < -3.0 and obtained 65 highly credible DWD candidates, of which 56 were newly discovered. We compared the distributions of the T-eff, log g, and mass of the DWD candidates and found that the mass distribution of DWDs has two peaks. The primary peak, located at 0.45 M-circle dot, is lower than the peak of the total WD sample, while the secondary peak, located at 0.60 M-circle dot, is similar to the peak of the total sample. Finally, we crossmatched our sample with Zwicky Transient Facility (ZTF) photometry data and identified two targets with clear periodic variability. Based on the shape of their light curve, we think both could be white dwarf main-sequence binary stars |
| 资助项目 | National Natural Science Foundation of China; Innovation Project of Beijing Academy of Science and Technology |
| 项目资助者 | National Natural Science Foundation of China ; Innovation Project of Beijing Academy of Science and Technology[11000023T000002062763-23CB059, CMS-CSST-2021-A10] ; [11988101] ; [12273055] ; [11890694] ; [11973048] ; [11927804] ; [12203006] |
| 语种 | 英语 |
| 学科领域 | 天文学 ; 恒星与银河系 |
| 文章类型 | Article |
| 出版者 | EDP SCIENCES S A |
| 出版地 | 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE |
| ISSN | 0004-6361 |
| URL | 查看原文 |
| WOS记录号 | WOS:001198946600002 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | DIGITAL SKY SURVEY ; TRANSIENT FACILITY DATA ; IA SUPERNOVAE ; DOUBLE-DETONATION ; SPECTROSCOPIC ANALYSIS ; SHORT-PERIOD ; SYSTEMATIC SEARCH ; MASS-DISTRIBUTION ; SPACE DENSITY ; GAIA EDR3 |
| EI入藏号 | 20241615927172 |
| EI主题词 | White dwarfs |
| EI分类号 | 657.2 Extraterrestrial Physics and Stellar Phenomena - 922.1 Probability Theory - 931.1 Mechanics |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/27098 |
| 专题 | 大样本恒星演化研究组 |
| 作者单位 | 1.Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Shandong University at Weihai, Weihai 264209, PR China; 2.CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, PR China; 3.Department of Scientific Research, Beijing Planetarium, Xizhimenwai Street, Beijing 100044, PR China; 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650011, PR China; 5.Key Laboratory of Stars and Interstellar Medium, Xiangtan University, Xiangtan 411105, PR China; 6.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, PR China |
| 推荐引用方式 GB/T 7714 | Yan, Huahui,Zhao, Jingkun,Shi, Weibin,et al. The search for DA double white dwarf binary candidates from SDSS DR14[J]. ASTRONOMY & ASTROPHYSICS,2024,684. |
| APA | Yan, Huahui.,Zhao, Jingkun.,Shi, Weibin.,Guo, Jincheng.,李振威.,...&Zhao, Gang.(2024).The search for DA double white dwarf binary candidates from SDSS DR14.ASTRONOMY & ASTROPHYSICS,684. |
| MLA | Yan, Huahui,et al."The search for DA double white dwarf binary candidates from SDSS DR14".ASTRONOMY & ASTROPHYSICS 684(2024). |
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| The search for DA do（19267KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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