Physical properties of the planetary systems WASP-45 and WASP-46 from simultaneous multiband photometry
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Physical properties of the planetary systems WASP-45 and WASP-46 from simultaneous multiband photometry. / Ciceri, S.; Mancini, L.; Southworth, J.; Lendl, M.; Tregloan-Reed, J.; Brahm, R.; Chen, G.; D'Ago, G.; Dominik, M.; Figuera Jaimes, R.; Galianni, P.; Harpsøe, Kennet Bomann West; Hinse, T. C.; Jørgensen, Uffe Gråe; Juncher, Diana; Korhonen, Heidi Helena; Liebig, C.; Rabus, M.; Bonomo, A. S.; Bott, K.; Henning, Th.; Jordán, A.; Sozzetti, A.; Alsubai, K. A.; Andersen, J. M.; Bajek, D.; Bozza, V.; Bramich, D. M.; Browne, P.; Calchi Novati, S.; Damerdji, Y.; Diehl, C.; Elyiv, A.; Giannini, E.; Gu, S.-H.; Hundertmark, Markus; Kains, N.; Penny, M.; Popovas, Andrius; Rahvar, S.; Scarpetta, G.; Schmidt, R. W.; Skottfelt, Jesper Mirsa; Snodgrass, C.; Surdej, J.; Vilela, C.; Wang, X.-B.; Wertz, O.
I: Monthly Notices of the Royal Astronomical Society, Bind 456, Nr. 1, 11.02.2016, s. 990-1002.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Physical properties of the planetary systems WASP-45 and WASP-46 from simultaneous multiband photometry
AU - Ciceri, S.
AU - Mancini, L.
AU - Southworth, J.
AU - Lendl, M.
AU - Tregloan-Reed, J.
AU - Brahm, R.
AU - Chen, G.
AU - D'Ago, G.
AU - Dominik, M.
AU - Figuera Jaimes, R.
AU - Galianni, P.
AU - Harpsøe, Kennet Bomann West
AU - Hinse, T. C.
AU - Jørgensen, Uffe Gråe
AU - Juncher, Diana
AU - Korhonen, Heidi Helena
AU - Liebig, C.
AU - Rabus, M.
AU - Bonomo, A. S.
AU - Bott, K.
AU - Henning, Th.
AU - Jordán, A.
AU - Sozzetti, A.
AU - Alsubai, K. A.
AU - Andersen, J. M.
AU - Bajek, D.
AU - Bozza, V.
AU - Bramich, D. M.
AU - Browne, P.
AU - Calchi Novati, S.
AU - Damerdji, Y.
AU - Diehl, C.
AU - Elyiv, A.
AU - Giannini, E.
AU - Gu, S.-H.
AU - Hundertmark, Markus
AU - Kains, N.
AU - Penny, M.
AU - Popovas, Andrius
AU - Rahvar, S.
AU - Scarpetta, G.
AU - Schmidt, R. W.
AU - Skottfelt, Jesper Mirsa
AU - Snodgrass, C.
AU - Surdej, J.
AU - Vilela, C.
AU - Wang, X.-B.
AU - Wertz, O.
PY - 2016/2/11
Y1 - 2016/2/11
N2 - 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 ρJup instead of 0.64 ± 0.30 ρJup for WASP-45 b, and 1.103 ± 0.052 ρJup instead of 0.94 ± 0.11 ρJup 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.
AB - 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 ρJup instead of 0.64 ± 0.30 ρJup for WASP-45 b, and 1.103 ± 0.052 ρJup instead of 0.94 ± 0.11 ρJup 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.
KW - planets and satellites: fundamental parameters
KW - stars: fundamental parameters
KW - stars: individual: WASP-45
KW - stars: individual: WASP-46
U2 - 10.1093/mnras/stv2698
DO - 10.1093/mnras/stv2698
M3 - Journal article
VL - 456
SP - 990
EP - 1002
JO - Royal Astronomical Society. Monthly Notices
JF - Royal Astronomical Society. Monthly Notices
SN - 0035-8711
IS - 1
ER -
ID: 170454718