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Physical properties of the planetary systemsWASP-45 and WASP-46 from simultaneous multiband photometry
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; Galianni, P.13; Harpsoe, K.16,17; Hinse, T. C.18; Jorgensen, U. G.15; Juncher, D.15; Korhonen, H.15,19; Liebig, C.13; Rabus, M.1; Bonomo, A. S.2; Bott, K.20,21; Henning, Th1; Jordan, A.7,8; Sozzetti, A.2; Alsubai, K. A.22; Andersen, J. M.15,23; Bajek, D.13; Bozza, V.; Bramich, D. M.21; Browne, P.13; Novati, S. Calchi11,12,24; Damerdji, Y.25; Diehl, C.26,27; Elyiv, A.24,28,29; Giannini, E.25; Gu, S-H.30,31; Hundertmark, M.15; Kains, N.32; Penny, M.15,33; Popovas, A.15; Rahvar, S.34; Scarpetta, G.11,12,23; Schmidt, R. W.25; Skottfelt, J.15,35; Snodgrass, C.36,37; Surdej, J.24; Vilela, C.3; Wang, X-B.29,30; Wertz, O.24
AbstractAccurate 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.
KeywordPlanets And Satellites: Fundamental Parameters Stars: Fundamental Parameters Stars: Individual: Wasp-45 Stars: Individual: Wasp-46
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000368010000107
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.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
11.Int Inst Adv Sci Studies IIASS, I-84019 Vietri Sul Mare, SA, Italy
12.Univ Salerno, Dept Phys ER Caianiello, Fisciano 84084, SA, Italy
13.Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy
14.Univ St Andrews, SUPA, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland
15.European So Observ, D-85748 Garching, Germany
16.Univ Copenhagen, Niels Bohr Inst, DK-1350 Copenhagen K, Denmark
17.Univ Copenhagen, Ctr Star & Planet Format, DK-1350 Copenhagen K, Denmark
18.Korea Astron & Space Sci Inst, Daejeon 305348, South Korea
19.Univ Turku, Finnish Ctr Astron ESO FINCA, FI-21500 Piikkio, Finland
20.Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia
21.Univ New S Wales, Australian Ctr Astrobiol, Sydney, NSW 2052, Australia
22.Qatar Fdn, Qatar Environm & Energy Res Inst, Doha, Qatar
23.Boston Univ, Dept Astron, Boston, MA 02215 USA
24.CALTECH, NASA Exoplanet Sci Inst, Pasadena, CA 91125 USA
25.Univ Liege, Inst Astrophys & Geophys, B-4000 Liege, Belgium
26.Heidelberg Univ, Zentrum Astron, Astron Rech Inst, D-69120 Heidelberg, Germany
27.Univ Hamburg, Hamburger Sternwarte, D-21029 Hamburg, Germany
28.Univ Bologna, Dipartimento Fis & Astron, I-40127 Bologna, Italy
29.Natl Acad Sci Ukraine, Main Astron Observ, UA-03680 Kiev, Ukraine
30.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China
31.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China
32.Space Telescope Sci Inst, Baltimore, MD 21218 USA
33.Ohio State Univ, Dept Astron, McPherson Lab, Columbus, OH 43210 USA
34.Sharif Univ Technol, Dept Phys, Tehran, Iran
35.Open Univ, Ctr Elect Imaging, Dept Phys Sci, Milton Keynes MK7 6AA, Bucks, England
36.Open Univ, Dept Phys Sci, Planetary & Space Sci, Milton Keynes MK7 6AA, Bucks, England
37.Max Planck Inst Solar Syst Res, D-37077 Gottingen, Germany
Recommended Citation
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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