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High-precision photometry by telescope defocusing - V.WASP-15 and WASP-16
, Article Monthly Notices of the Royal Astronomical Society ; Volume 434, Issue 2 , July , 2013 , Pages 1300-1308 ; 00358711 (ISSN) ; Mancini, L ; Browne, P ; Burgdorf, M ; Calchi Novati, S ; Dominik, M ; Gerner, T ; Hinse, T. C ; Jørgensen, U. G ; Kains, N ; Ricci, D ; Scháfer, S ; Schónebeck, F ; Tregloan-Reed, J ; Alsubai, K. A ; Bozza, V ; Chen, G ; Dodds, P ; Dreizler, S ; Fang, X. S ; Finet, F ; Gu, S. H ; Hardis, S ; Harpsøe, K ; Henning, T ; Hundertmark, M ; Jessen-Hansen, J ; Kerins, E ; Kjeldsen, H ; Liebig, C ; Lund, M. N ; Lundkvist, M ; Mathiasen, M ; Nikolov, N ; Penny, M. T ; Proft, S ; Rahvar, S ; Sahu, K ; Scarpetta, G ; Skottfelt, J ; Snodgrass, C ; Surdej, J ; Wertz, O ; Sharif University of Technology
2013
Abstract
We present newphotometric observations ofWASP-15 andWASP-16, two transiting extrasolar planetary systems with measured orbital obliquities but without photometric follow-up since their discovery papers. Our new data for WASP-15 comprise observations of one transit simultaneously in four optical passbands using GROND on the MPG/European Southern Observatory (ESO) 2.2 m telescope, plus coverage of half a transit from DFOSC on the Danish 1.54 m telescope, both at ESO La Silla. ForWASP-16 we present observations of fourcomplete transits, all from the Danish telescope. We use these new data to refine the measured physical properties and orbital ephemerides of the two systems. Whilst our results...
Physical properties, transmission and emission spectra of the WASP-19 planetary system from multi-colour photometry
, Article Monthly Notices of the Royal Astronomical Society ; Volume 436, Issue 1 , 2013 , Pages 2-18 ; 00358711 (ISSN) ; Ciceri, S ; Chen, G ; Tregloan Reed, J ; Fortney, J. J ; Southworth, J ; Tan, T.G ; Burgdorf, M ; Calchi Novati, S ; Dominik, M ; Fang, X. S ; Finet, F ; Gerner, T ; Hardis, S ; Hinse, T. C ; Jørgensen, U. G ; Liebig, C ; Nikolov, N ; Ricci, D ; Schäfer, S ; Schönebeck, F ; Skottfelt, J ; Wertz, O ; Alsubai, K. A ; Bozza, V ; Browne, P ; Dodds, P ; Gu, S. H ; Harpsøe, K ; Henning, T ; Hundertmark, M ; Jessen Hansen, J ; Kains, N ; Kerins, E ; Kjeldsen, H ; Lund, M. N ; Lundkvist, M ; Madhusudhan, N ; Mathiasen, M ; Penny, M. T ; Prof, S ; Rahvar, S ; Sahu, K ; Scarpetta, G ; Snodgrass, C ; Surdej, J ; Sharif University of Technology
2013
Abstract
We present new ground-based, multi-colour, broad-band photometric measurements of the physical parameters, transmission and emission spectra of the transiting extrasolar planet WASP-19b. The measurements are based on observations of eight transits and four occultations through a Gunn i filter using the 1.54-m Danish Telescope, 14 transits through an Rc filter at the Perth Exoplanet SurveyTelescope (PEST) observatory and one transit observed simultaneously through four optical (Sloan g', r', i', z') and three near-infrared (J,H,K) filters, using the Gamma Ray Burst Optical and Near-Infrared Detector (GROND) instrument on the MPG/ESO 2.2-m telescope. The GROND optical light curves have a...
OGLE-2017-BLG-1434Lb: eighth q<1×10-4 mass-ratio microlens planet confirms turnover in planet mass-ratio function
, Article Acta Astronomica ; Volume 68, Issue 1 , 2018 , Pages 1-42 ; 00015237 (ISSN) ; Ryu, Y. H ; Sajadian, S ; Gould, A ; Mroz, P ; Poleski, R ; Szymanski, M. K ; Skowron, J ; Soszynski, I ; Kozlowski, S ; Pietrukowicz, P ; Ulaczyk, K ; Pawlak, M ; Rybicki, K ; Iwanek, P ; Albrow, M. D ; Chung, S. J ; Han, C ; Hwang, K. H ; Jung, Y. K ; Shin, I. G ; Shvartzvald, Y ; Yee, J. C ; Zang, W ; Zhu, W ; Cha, S. M ; Kim, D. J ; Kim, H. W ; Kim, S. L ; Lee, C. U ; Lee, D. J ; Lee, Y ; Park, B. G ; Pogge, R. W ; Bozza, V ; Dominik, M ; Helling, C ; Hundertmark, M ; Jorgensen, U. G ; Longa Pena, P ; Lowry, S ; Burgdorf, M ; CampbellWhite, J ; Ciceri, S ; Evans, D ; Figuera Jaimes, R ; Fujii, Y. I ; Haikala, L. K ; Henning, T ; Hinse, T. C ; Mancini, L ; Peixinho, N ; Rahvar, S ; Rabus, M ; Skottfelt, J ; Snodgrass, C ; Southworth, J ; Von Essen, C ; Sharif University of Technology
2018
Abstract
We report the discovery of a cold Super-Earth planet (mp = 4.4 ± 0.5 M) orbiting a lowmass (M = 0.23 ± 0.03 M) M dwarf at projected separation a = 1.18 ± 0.10 a.u., i.e., about 1.9 times the distance the snow line. The system is quite nearby for a microlensing planet, DL = 0.86 ± 0.09 kpc. Indeed, it was the large lens-source relative parallax πrel = 1.0 mas (combined with the low mass M) that gave rise to the large, and thus well-measured, "microlens parallax πE ∞ (πrel/M)1/2 that enabled these precise measurements. OGLE-2017-BLG-1434Lb is the eighth microlensing planet with planet-host mass ratio q < 1×10-4. We apply a new planet-detection sensitivity method, which is a variant of "V/Vmax,...