NEAR-INFRARED IMAGING OF WHITE DWARFS WITH CANDIDATE DEBRIS DISKS
文献类型：期刊论文
| 作者 | Wang, Zhongxiang1 ; Tziamtzis, Anestis1; Wang, Xuebing1,2
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| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2014-02-10 |
| 卷号 | 782期号:1页码:20 |
| 关键词 | circumstellar matter infrared: stars white dwarfs |
| 通讯作者 | 王仲翔 |
| 英文摘要 | We have carried out JHK(s) imaging of 12 white dwarf debris disk candidates from the WIRED Sloan Digital Sky Survey Data Release 7 catalog, aiming to confirm or rule out disks among these sources. On the basis of positional identification and the flux density spectra, we find that seven white dwarfs have excess infrared emission, but mostly at Wide-field Infrared Survey Explorer W1 and W2 bands. Four are due to nearby red objects consistent with background galaxies or very low mass dwarfs, and one exhibits excess emission at JHK(s) consistent with an unresolved L0 companion at the correct distance. While our photometry is not inconsistent with all seven excesses arising from disks, the stellar properties are distinct from the known population of debris disk white dwarfs, making the possibility questionable. In order to further investigate the nature of these infrared sources, warm Spitzer imaging is needed, which may help resolve galaxies from the white dwarfs and provide more accurate flux measurements. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | PLANETARY DEBRIS ; BROWN DWARF ; DUST CLOUD ; SKY SURVEY ; G29-38 ; TELESCOPE ; ACCRETION ; CATALOG ; EXCESS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000331848200020 |
| 公开日期 | 2015-02-14 |
| 源URL | [http://119.78.226.72//handle/331011/15812]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Zhongxiang,Tziamtzis, Anestis,Wang, Xuebing. NEAR-INFRARED IMAGING OF WHITE DWARFS WITH CANDIDATE DEBRIS DISKS[J]. ASTROPHYSICAL JOURNAL,2014,782(1):20. |
| APA | Wang, Zhongxiang,Tziamtzis, Anestis,&Wang, Xuebing.(2014).NEAR-INFRARED IMAGING OF WHITE DWARFS WITH CANDIDATE DEBRIS DISKS.ASTROPHYSICAL JOURNAL,782(1),20. |
| MLA | Wang, Zhongxiang,et al."NEAR-INFRARED IMAGING OF WHITE DWARFS WITH CANDIDATE DEBRIS DISKS".ASTROPHYSICAL JOURNAL 782.1(2014):20. |
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来源：上海天文台
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