Physical properties of the planetary systemsWASP-45 and WASP-46 from simultaneous multiband photometry
文献类型：期刊论文
| 作者 | Ciceri, S.1; Mancini, L.1,2; Southworth, J.3; Lendl, M.4,5; Tregloan-Reed, J.3,6; Brahm, R.7,8; Chen, G.9,10; D'Ago, G.11,12,13; Dominik, M.14; Jaimes, R. Figuera13,15 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2016-02-11 |
| 卷号 | 456期号:1页码:990-1002 |
| 关键词 | planets and satellites: fundamental parameters stars: fundamental parameters stars: individual: WASP-45 stars: individual: WASP-46 |
| 英文摘要 | Accurate measurements of the physical characteristics of a large number of exoplanets are useful to strongly constrain theoretical models of planet formation and evolution, which lead to the large variety of exoplanets and planetary-system configurations that have been observed. We present a study of the planetary systems WASP-45 and WASP-46, both composed of a main-sequence star and a close-in hot Jupiter, based on 29 new high-quality light curves of transits events. In particular, one transit of WASP-45 b and four of WASP-46 b were simultaneously observed in four optical filters, while one transit of WASP-46 b was observed with the NTT obtaining a precision of 0.30 mmag with a cadence of roughly 3 min. We also obtained five new spectra of WASP-45 with the FEROS spectrograph. We improved by a factor of 4 the measurement of the radius of the planet WASP-45 b, and found that WASP-46 b is slightly less massive and smaller than previously reported. Both planets now have a more accurate measurement of the density (0.959 +/- 0.077 rho Jup instead of 0.64 +/- 0.30 rho Jup for WASP-45 b, and 1.103 +/- 0.052 rho Jup instead of 0.94 +/- 0.11 rho Jup for WASP-46 b). We tentatively detected radius variations with wavelength for both planets, in particular in the case of WASP-45 b we found a slightly larger absorption in the redder bands than in the bluer ones. No hints for the presence of an additional planetary companion in the two systems were found either from the photometric or radial velocity 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] | TRANSITING EXTRASOLAR PLANETS ; STELLAR EVOLUTION DATABASE ; HIGH-PRECISION PHOTOMETRY ; LIMB-DARKENING LAW ; LIGHT-CURVE ; TRANSMISSION SPECTRA ; ATMOSPHERE MODELS ; SURFACE GRAVITIES ; LOW-MASS ; TELESCOPE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000368010000107 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/16109]  |
| 专题 | 紫金山天文台_行星科学与深空探测实验室 |
| 作者单位 | 1.Max Planck Inst Astron, D-69117 Heidelberg, Germany 2.Osserv Astron Torino, INAF, I-10025 Pino Torinese, Italy 3.Keele Univ, Astrophys Grp, Keele ST5 5BG, Staffs, England 4.Austrian Acad Sci, Space Res Inst, A-8042 Graz, Austria 5.Univ Geneva, Observ Geneva, CH-1290 Sauverny, Switzerland 6.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA 7.Pontificia Univ Catolica Chile, Inst Astrofis, Santiago 7820436, Chile 8.Millennium Inst Astrophys, Santiago 7820436, Chile 9.Chinese Acad Sci, Purple Mt Observ, Key Lab Planetary Sci, Nanjing 210008, Jiangsu, Peoples R China 10.Inst Astrofis Canarias, E-38205 Tenerife, Spain |
| 推荐引用方式 GB/T 7714 | Ciceri, S.,Mancini, L.,Southworth, J.,et al. Physical properties of the planetary systemsWASP-45 and WASP-46 from simultaneous multiband photometry[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,456(1):990-1002. |
| APA | Ciceri, S..,Mancini, L..,Southworth, J..,Lendl, M..,Tregloan-Reed, J..,...&Wertz, O..(2016).Physical properties of the planetary systemsWASP-45 and WASP-46 from simultaneous multiband photometry.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,456(1),990-1002. |
| MLA | Ciceri, S.,et al."Physical properties of the planetary systemsWASP-45 and WASP-46 from simultaneous multiband photometry".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 456.1(2016):990-1002. |
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来源：紫金山天文台
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