High-precision photometry by telescope defocussing - VI. WASP-24, WASP-25 and WASP-26

被引：52

作者：

Southworth, John ^{[1
]}

Hinse, T. C. ^{[1
]}

Burgdorf, M. ^{[2
]}

Novati, S. Calchi ^{[3
,4
,5
]}

Dominik, M. ^{[6
]}

Galianni, P. ^{[6
]}

Gerner, T. ^{[7
]}

Giannini, E. ^{[7
]}

Gu, S. -H. ^{[8
,9
]}

Hundertmark, M. ^{[6
]}

Jorgensen, U. G. ^{[10
,11
]}

Juncher, D. ^{[10
,11
]}

Kerins, E. ^{[12
]}

Mancini, L. ^{[13
]}

Rabus, M. ^{[13
,14
]}

Ricci, D. ^{[15
]}

Schaefer, S. ^{[16
]}

Skottfelt, J. ^{[10
,11
]}

Tregloan-Reed, J. ^{[1
,17
]}

Wang, X. -B. ^{[8
,9
]}

Wertz, O. ^{[18
]}

Alsubai, K. A. ^{[19
]}

Andersen, J. M. ^{[10
,11
,20
]}

Bozza, V. ^{[4
,21
]}

Bramich, D. M. ^{[19
]}

Browne, P. ^{[6
]}

Ciceri, S. ^{[13
]}

D'Ago, G. ^{[4
,21
]}

Damerdji, Y. ^{[18
]}

Diehl, C. ^{[7
,22
]}

Dodds, P. ^{[6
]}

Elyiv, A. ^{[18
,23
,24
]}

Fang, X. -S. ^{[8
,9
]}

Finet, F. ^{[18
,25
]}

Jaimes, R. Figuera ^{[6
,26
]}

Hardis, S. ^{[11
]}

Harpsoe, K. ^{[11
]}

Jessen-Hansen, J. ^{[27
]}

Kains, N. ^{[28
]}

Kjeldsen, H. ^{[27
]}

Korhonen, H. ^{[10
,11
,29
]}

Liebig, C. ^{[6
]}

Lund, M. N. ^{[27
]}

Lundkvist, M. ^{[27
]}

Mathiasen, M. ^{[10
,11
]}

Penny, M. T. ^{[30
]}

Popovas, A. ^{[10
,11
]}

Prof, S. ^{[7
]}

Rahvar, S. ^{[31
]}

Sahu, K. ^{[28
]}

机构：

[1] Keele Univ, Astrophys Grp, Keele ST5 5BG, Staffs, England

[2] Korea Astron & Space Sci Inst, Taejon 305348, South Korea

[3] HE Space Operat GmbH, D-28199 Bremen, Germany

[4] Univ Salerno, Dipartimento Fis ER Caianiello, I-84084 Fisciano, SA, Italy

[5] IIASS, I-84019 Vietri Sul Mare, SA, Italy

[6] Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife, Scotland

[7] Heidelberg Univ, Zentrum Astron, Astron Rechen Inst, D-69120 Heidelberg, Germany

[8] Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China

[9] Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China

[10] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen O, Denmark

[11] Univ Copenhagen, Ctr Star & Planet Format, DK-2100 Copenhagen O, Denmark

[12] Univ Manchester, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England

[13] Max Planck Inst Astron, D-69117 Heidelberg, Germany

[14] Pontificia Univ Catolica Chile, Fac Fis, Inst Astrofis, Santiago 7820436, Chile

[15] Inst Astron UNAM, Ensenada, Baja California, Mexico

[16] Univ Gottingen, Inst Astrophys, D-37077 Gottingen, Germany

[17] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA

[18] Univ Liege, Inst Astrophys & Geophys, B-4000 Liege, Belgium

[19] Qatar Fdn, Qatar Environm & Energy Res Inst, Doha, Qatar

[20] Boston Univ, Dept Astron, Boston, MA 02215 USA

[21] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy

[22] Univ Hamburg, Hamburger Sternwarte, D-21029 Hamburg, Germany

[23] Univ Bologna, Dipartimento Fis & Astron, I-40127 Bologna, Italy

[24] Ukrainian Acad Sci, Main Astron Observ, UA-03680 Kiev, Ukraine

[25] Aryabhatta Res Inst Observat Sci ARIES, Naini Tal 263129, Uttarakhand, India

[26] European So Observ, D-85748 Garching, Germany

[27] Aarhus Univ, Dept Phys & Astron, SAC, DK-8000 Aarhus C, Denmark

[28] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[29] Univ Turku, Finnish Ctr Astron ESO FINCA, FI-21500 Piikkio, Finland

[30] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA

[31] Sharif Univ Technol, Dept Phys, Tehran, Iran

[32] Max Planck Inst Solar Syst Res, D-37077 Gottingen, Germany

[33] LCOGT, Goleta, CA 93117 USA

[34] Univ London, Sch Math Sci, London E1 4NS, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2014年 / 444卷 / 01期

基金：

欧洲研究理事会; 新加坡国家研究基金会;

关键词：

stars: fundamental parameters; planetary systems; stars: individual: WASP-24; stars: individual: WASP-25; stars: individual: WASP-26; TRANSITING EXTRASOLAR PLANETS; PHYSICAL-PROPERTIES; STELLAR MODELS; SYSTEM; STARS; RADII; EVOLUTION; PARAMETERS; MASS; EXOPLANETS;

D O I：

10.1093/mnras/stu1492

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present time series photometric observations of 13 transits in the planetary systems WASP-24, WASP-25 and WASP-26. All three systems have orbital obliquity measurements, WASP-24 andWASP-26 have been observed with Spitzer, andWASP-25 was previously comparatively neglected. Our light curves were obtained using the telescope-defocussing method and have scatters of 0.5-1.2 mmag relative to their best-fitting geometric models. We use these data to measure the physical properties and orbital ephemerides of the systems to high precision, finding that our improved measurements are in good agreement with previous studies. High-resolution Lucky Imaging observations of all three targets show no evidence for faint stars close enough to contaminate our photometry. We confirm the eclipsing nature of the star closest to WASP-24 and present the detection of a detached eclipsing binary within 4.25 arcmin of WASP-26.

引用

页码：776 / 789

页数：14

共 57 条

[1] OBLIQUITIES OF HOT JUPITER HOST STARS: EVIDENCE FOR TIDAL INTERACTIONS AND PRIMORDIAL MISALIGNMENTS [J].