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A Hot White Dwarf SDSS J134430.11+032423.1 with a Planetary Debris Disk
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
Source PublicationASTROPHYSICAL JOURNAL
2017-02-10
Volume836Issue:1
DOI10.3847/1538-4357/836/1/71
Contribution Rank第1完成单位
Indexed BySCI
KeywordCircumstellar Matter Stars: Individual: Sdss j134430.11+032423.1 White Dwarfs
Abstract

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.

Funding ProjectChinese Natural Science Foundation[11373063] ; Chinese Natural Science Foundation[11273053] ; Chinese Natural Science Foundation[11573062] ; Chinese Natural Science Foundation[11390374] ; Chinese Natural Science Foundation[XDB09010202] ; YIPACAS Foundation[2012048] ; Yunnan Foundation[2011CI053] ; Alfred P. Sloan Foundation ; National Science Foundation ; U.S. Department of Energy ; National Aeronautics and Space Administration (NASA) ; Japanese Monbukagakusho ; Max Planck Society ; Higher Education Funding Council for England ; NASA ; NASA[NASS-98034]
Funding OrganizationChinese Natural Science Foundation[11373063, 11273053, 11573062, 11390374, XDB09010202] ; YIPACAS Foundation[2012048] ; Yunnan Foundation[2011CI053] ; Alfred P. Sloan Foundation ; National Science Foundation ; U.S. Department of Energy ; National Aeronautics and Space Administration (NASA) ; Japanese Monbukagakusho ; Max Planck Society ; Higher Education Funding Council for England ; NASA ; NASA[NASS-98034]
Language英语
Subject Area天文学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000397304500023
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordDIGITAL SKY SURVEY ; IA PROGENITOR SURVEY ; DATA RELEASE ; STARS ; EMISSION ; EXCESS ; RICH ; FREQUENCY ; EXPLORER ; CATALOG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9993
Collection大样本恒星演化研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorLi LF(李立芳)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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).
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