The transiting system GJ1214: high-precision defocused transit observations and a search for evidence of transit timing variation
文献类型：期刊论文
| 作者 | Harpsoe, KBW; Hardis, S; Hinse, TC; Jorgensen, G; Mancini, L; Southworth, J; Alsubai, KA; Bozza, V; Browne, P; Burgdorf, MJ |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2013-01 |
| 卷号 | 549 |
| 关键词 | planetray systems stars: individual: GJ1214 methods: statistical methods: observational techniques: photometric |
| ISSN号 | 0004-6361 |
| 产权排序 | 第二十一完成单位 |
| 通讯作者 | Harpsoe, KBW (reprint author), Univ Copenhagen, Niels Bohr Inst, Juliane Maries Vej 30, DK-2100 Copenhagen O, Denmark. |
| 英文摘要 | Aims. We present 11 high-precision photometric transit observations of the transiting super-Earth planet GJ 1214 b. Combining these data with observations from other authors, we investigate the ephemeris for possible signs of transit timing variations (TTVs) using a Bayesian approach. Methods. The observations were obtained using telescope-defocusing techinques, and achieve a high precision with random errors in the photometry as low as 1 mmag per point. To investigate the possiblity of TTVs in the light curve, we calculate the overall probability of a TTV signal using Bayesian methods. Results. The observations are used to determine the photometric parameters and the physical properties of the GJ 1214 system. Our results are in good agreement with published values. Individual times of mid-transit are measured with uncertainites as low as 10 s, allowing us to reduce the uncertainity in the orbital period by a factor or two. Conclusions. A Bayesian analysis reveals that it is highly improbable that the observed transit times is explained by TTV caused by a planet in the nominal habitable zone, when compared with the simpler alternative of a linear ephemeris. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | EXTRASOLAR PLANETS ; ECLIPSING BINARIES ; GJ 1214B ; PHYSICAL-PROPERTIES ; ADDITIONAL PLANETS ; OPEN CLUSTERS ; MASS ; PHOTOMETRY ; ATMOSPHERE ; EXOPLANETS |
| 收录类别 | SCI ; EI |
| 原文出处 | http://www.aanda.org/articles/aa/abs/2013/01/aa19996-12/aa19996-12.html |
| 语种 | 英语 |
| WOS记录号 | WOS:000313745000010 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6797]  |
| 专题 | 云南天文台_系外行星研究组 |
| 推荐引用方式 GB/T 7714 | Harpsoe, KBW,Hardis, S,Hinse, TC,et al. The transiting system GJ1214: high-precision defocused transit observations and a search for evidence of transit timing variation[J]. ASTRONOMY & ASTROPHYSICS,2013,549. |
| APA | Harpsoe, KBW.,Hardis, S.,Hinse, TC.,Jorgensen, G.,Mancini, L.,...&Wertz, O.(2013).The transiting system GJ1214: high-precision defocused transit observations and a search for evidence of transit timing variation.ASTRONOMY & ASTROPHYSICS,549. |
| MLA | Harpsoe, KBW,et al."The transiting system GJ1214: high-precision defocused transit observations and a search for evidence of transit timing variation".ASTRONOMY & ASTROPHYSICS 549(2013). |
入库方式： OAI收割
来源：云南天文台
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