A Hot White Dwarf SDSS J134430.11+032423.1 with a Planetary Debris Disk
文献类型：期刊论文
| 作者 | Li LF(李立芳)1,2,3 ; Zhang FH(张奉辉)1,2,3; Kong XY(孔晓阳)1,3,4; Han QW(韩全旺)1,3,4; Li, Jiansha1,3,4
|
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2017-02-10 |
| 卷号 | 836期号:1 |
| 关键词 | circumstellar matter stars: individual: SDSS J134430.11+032423.1 white dwarfs |
| ISSN号 | 0004-637X |
| 产权排序 | 第1完成单位 |
| 通讯作者 | Li, Lifang(Chinese Acad Sci, Yunnan Observ, Kunming 650216, Peoples R China) |
| 英文摘要 | We discovered a debris disk around hot white dwarf (WD) SDSS J134430.11+032423.1 (SDSS J1344+0324). The effective temperature [T-eff = 26,071(+/- 163) K], surface gravity [log g = 7.88(2)], and mass [M= 0.58(1) M-circle dot] of this WD have been redetermined based on the analysis of its SDSS spectrum. We found. that SDSS J1344+0324 is currently the hottest. WD with a debris disk. Two spectra observed by SDSS at different times show that this object is similar to SDSS J1228+1040 with variable near-IR Ca II triplet emissions from a gaseous disk. The parameters of the debris disk are derived from the IR excess analysis of SDSS J1344 +0324. We found that the disk is the coolest of all debris disks around WDs, and that the inner and outer radii are very close to the tide radius of the WD. Thus, the debris disk is very narrow (about 0.22 R-circle dot). This implies. that it might be a newly formed disk resulting from the tidal disruption of a rocky planetary body that has just entered the tide volume of the WD. This might provide strong observational evidence for the formation of debris disks around WDs. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | 天文学 |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | DIGITAL SKY SURVEY ; IA PROGENITOR SURVEY ; DATA RELEASE ; STARS ; EMISSION ; EXCESS ; RICH ; FREQUENCY ; EXPLORER ; CATALOG |
| 收录类别 | SCI |
| 原文出处 | http://stacks.iop.org/0004-637X/836/i=1/a=71?key=crossref.c8833ce4401ae387ae3828074f0f8a78 |
| 语种 | 英语 |
| WOS记录号 | WOS:000397304500023 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/9993]  |
| 专题 | 云南天文台_大样本恒星演化研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, 650216, Kunming, P. R. China 2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Beijing, 100012, P. R. China 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650216, Kunming, P. R. China 4.University of the Chinese Academy of Sciences, Beijing, 100049, P. R. China |
| 推荐引用方式 GB/T 7714 | Li LF,Zhang FH,Kong XY,et al. A Hot White Dwarf SDSS J134430.11+032423.1 with a Planetary Debris Disk[J]. ASTROPHYSICAL JOURNAL,2017,836(1). |
| APA | Li LF,Zhang FH,Kong XY,Han QW,&Li, Jiansha.(2017).A Hot White Dwarf SDSS J134430.11+032423.1 with a Planetary Debris Disk.ASTROPHYSICAL JOURNAL,836(1). |
| MLA | Li LF,et al."A Hot White Dwarf SDSS J134430.11+032423.1 with a Planetary Debris Disk".ASTROPHYSICAL JOURNAL 836.1(2017). |
入库方式： OAI收割
来源：云南天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。