New evidence for the precession of tilted disc in SDSS J081256.85+191157.8
文献类型：期刊论文
| 作者 | Sun QB(孙起斌)1,2,3,4 ; Qian SB(钱声帮)1,2,3,4; Zhu LY(朱俐颖)1,3,4; Liao WP(廖文萍)1,3,4; Zhao EG(赵二刚)1,4; Li FX(李福兴)1,4; Shi XD(施相东)1,4; Li MY(李敏榆)1,3,4
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2023-10-10 |
| 卷号 | 526期号:3页码:3730-3743 |
| ISSN号 | 0035-8711 |
| 关键词 | stars: binaries: eclipsing stars: individual (SDSS J081256.85+191157.8) stars: novae, cataclysmic variables |
| DOI | 10.1093/mnras/stad1880 |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | Superorbital signals and negative superhumps are thought to be related to the reverse precession of the nodal line in a tilted disc, but the evidence is lacking. Our results provide new evidence for the precession of the tilted disc. Based on the TESS and K2 photometry, we investigate the superorbital signals, negative superhumps, positive superhumps, and eclipse characteristics of the long-period eclipsing cataclysmic variable star SDSS J0812. We find superorbital signals, negative superhumps, and positive superhumps with periods of 3.0451(5) d, 0.152047(2) d, and 0.174686 (7) d, respectively, in the K2 photometry, but all disappear in the TESS photometry, where the positive superhumps are present only in the first half of the same campaign, confirming that none of them is permanently present in SDSS J0812. In addition, we find for the first time a cyclic variation of the O-C of minima, eclipse depth, and negative superhumps amplitudes for 3.045 (8) d, 3.040(6) d, and 3.053 (8) d in SDSS J0812, respectively, and all reach the maximum at similar to 0.75 precession phases of the tilted disc, which provides new evidence for the precession of the tilted disc. We suggest that the O-C and eclipse depth variations may come from a shift of the brightness centre of the precession tilted disc. Our first finding on the periodic variation of negative superhumps amplitude with the superorbital signals is significant evidence that the origin of negative superhumps is related to the precession of the tilted disc. |
| 学科主题 | 天文学 |
| URL标识 | 查看原文 |
| 出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
| WOS关键词 | NOVA OY-CARINAE ; CATACLYSMIC VARIABLES ; NEGATIVE SUPERHUMPS ; KEPLER OBSERVATIONS ; ACCRETION DISCS ; KIC 9406652 ; V344 LYRAE ; SUPEROUTBURSTS ; SIMULATIONS ; PHOTOMETRY |
| 资助项目 | National Natural Science Foundation of China[11933008]; National Natural Science Foundation of China[12103084] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:001142416100001 |
| 资助机构 | National Natural Science Foundation of China[11933008, 12103084] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/26523]  |
| 专题 | 云南天文台_双星与变星研究组 |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; 2.Department of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, China; 3.University of Chinese Academy of Sciences, No.1 Yanqihu East Rd, Huairou District, Beijing 101408, China 4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China; |
| 推荐引用方式 GB/T 7714 | Sun QB,Qian SB,Zhu LY,et al. New evidence for the precession of tilted disc in SDSS J081256.85+191157.8[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2023,526(3):3730-3743. |
| APA | 孙起斌.,钱声帮.,朱俐颖.,廖文萍.,赵二刚.,...&李敏榆.(2023).New evidence for the precession of tilted disc in SDSS J081256.85+191157.8.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,526(3),3730-3743. |
| MLA | 孙起斌,et al."New evidence for the precession of tilted disc in SDSS J081256.85+191157.8".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 526.3(2023):3730-3743. |
入库方式： OAI收割
来源：云南天文台
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