Discovery of the secondary eclipse of HAT-P-11 b

被引：24

作者：

Huber, K. F. ^{[1
]}

Czesla, S. ^{[1
]}

Schmitt, J. H. M. M. ^{[1
]}

机构：

[1] Univ Hamburg, Hamburger Sternwarte, Gojenbergsweg 112, D-21029 Hamburg, Germany

来源：

ASTRONOMY & ASTROPHYSICS | 2017年 / 597卷

关键词：

planetary systems; stars: individual: HAT-P-11; techniques: photometric; methods: data analysis; MODEL ATMOSPHERES; LIGHT CURVES; KEPLER; PLANET; TRANSIT; ORBIT;

D O I：

10.1051/0004-6361/201629699

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the detection of the secondary eclipse of HAT-P-11 b, a Neptune-sized planet orbiting an active K4 dwarf. Using all available short-cadence data of the Kepler mission, we derive refined planetary ephemeris increasing their precision by more than an order of magnitude. Our simultaneous primary and secondary transit modeling results in improved transit and orbital parameters. In particular, the precise timing of the secondary eclipse allows to pin down the orbital eccentricity to 0.26459(-0.00048)(+0.00069). The secondary eclipse depth of 6.09(-1.11)(+1.12) ppm corresponds to a 5.5 sigma detection and results in a geometric albedo of 0.39 +/- 0.07 for HAT-P-11 b, close to Neptune's value, which may indicate further resemblances between these two bodies. Due to the substantial orbital eccentricity, the planetary equilibrium temperature is expected to change significantly with orbital position and ought to vary between 630 K and 950 K, depending on the details of heat redistribution in the atmosphere of HAT-P-11 b.

引用

页数：9

共 31 条

[1] A Comprehensive Study of Kepler Phase Curves and Secondary Eclipses: Temperatures and Albedos of Confirmed Kepler Giant Planets [J].

Angerhausen, Daniel ;

DeLarme, Em ;

Morse, Jon A. .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 2015, 127 (957) :1113-1130

[2] Wide-field millimagnitude photometry with the HAT:: A tool for extrasolar planet detection [J].

Bakos, G ;

Noyes, RW ;

Kovács, G ;

Stanek, KZ ;

Sasselov, DD ;

Domsa, I .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 2004, 116 (817) :266-277

[3] HAT-P-11b: A SUPER-NEPTUNE PLANET TRANSITING A BRIGHT K STAR IN THE KEPLER FIELD [J].

Bakos, G. A. ;

Torres, G. ;

Pal, A. ;

Hartman, J. ;

Kovacs, Geza ;

Noyes, R. W. ;

Latham, D. W. ;

Sasselov, D. D. ;

Sipocz, B. ;

Esquerdo, G. A. ;

Fischer, D. A. ;

Johnson, J. A. ;

Marcy, G. W. ;

Butler, R. P. ;

Isaacson, H. ;

Howard, A. ;

Vogt, S. ;

Kovacs, Gabor ;

Fernandez, J. ;

Moor, A. ;

Stefanik, R. P. ;

Lazar, J. ;

Papp, I. ;

Sari, P. .

ASTROPHYSICAL JOURNAL, 2010, 710 (02) :1724-1745

[4] System description and first light curves of the Hungarian Automated Telescope, an autonomous observatory for variability search [J].

Bakos, GA ;

Lázár, J ;

Papp, I ;

Sári, P ;

Green, EM .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 2002, 114 (799) :974-987

[5] KEPLER'S FIRST ROCKY PLANET: KEPLER-10b [J].

Batalha, Natalie M. ;

Borucki, William J. ;

Bryson, Stephen T. ;

Buchhave, Lars A. ;

Caldwell, Douglas A. ;

Christensen-Dalsgaard, Jorgen ;

Ciardi, David ;

Dunham, Edward W. ;

Fressin, Francois ;

Gautier, Thomas N., III ;

Gilliland, Ronald L. ;

Haas, Michael R. ;

Howell, Steve B. ;

Jenkins, Jon M. ;

Kjeldsen, Hans ;

Koch, David G. ;

Latham, David W. ;

Lissauer, Jack J. ;

Marcy, Geoffrey W. ;

Rowe, Jason F. ;

Sasselov, Dimitar D. ;

Seager, Sara ;

Steffen, Jason H. ;

Torres, Guillermo ;

Basri, Gibor S. ;

Brown, Timothy M. ;

Charbonneau, David ;

Christiansen, Jessie ;

Clarke, Bruce ;

Cochran, William D. ;

Dupree, Andrea ;

Fabrycky, Daniel C. ;

Fischer, Debra ;

Ford, Eric B. ;

Fortney, Jonathan ;

Girouard, Forrest R. ;

Holman, Matthew J. ;

Johnson, John ;

Isaacson, Howard ;

Klaus, Todd C. ;

Machalek, Pavel ;

Moorehead, Althea V. ;

Morehead, Robert C. ;

Ragozzine, Darin ;

Tenenbaum, Peter ;

Twicken, Joseph ;

Quinn, Samuel ;

VanCleve, Jeffrey ;

Walkowicz, Lucianne M. ;

Welsh, William F. .

ASTROPHYSICAL JOURNAL, 2011, 729 (01)

[6] STELLAR ROTATION-PLANETARY ORBIT PERIOD COMMENSURABILITY IN THE HAT-P-11 SYSTEM [J].

Beky, Bence ;

Holman, Matthew J. ;

Kipping, David M. ;

Noyes, Robert W. .

ASTROPHYSICAL JOURNAL, 2014, 788 (01)

[7] Kepler Planet-Detection Mission: Introduction and First Results [J].

Borucki, William J. ;

Koch, David ;

Basri, Gibor ;

Batalha, Natalie ;

Brown, Timothy ;

Caldwell, Douglas ;

Caldwell, John ;

Christensen-Dalsgaard, Jorgen ;

Cochran, William D. ;

DeVore, Edna ;

Dunham, Edward W. ;

Dupree, Andrea K. ;

Gautier, Thomas N., III ;

Geary, John C. ;

Gilliland, Ronald ;

Gould, Alan ;

Howell, Steve B. ;

Jenkins, Jon M. ;

Kondo, Yoji ;

Latham, David W. ;

Marcy, Geoffrey W. ;

Meibom, Soren ;

Kjeldsen, Hans ;

Lissauer, Jack J. ;

Monet, David G. ;

Morrison, David ;

Sasselov, Dimitar ;

Tarter, Jill ;

Boss, Alan ;

Brownlee, Don ;

Owen, Toby ;

Buzasi, Derek ;

Charbonneau, David ;

Doyle, Laurance ;

Fortney, Jonathan ;

Ford, Eric B. ;

Holman, Matthew J. ;

Seager, Sara ;

Steffen, Jason H. ;

Welsh, William F. ;

Rowe, Jason ;

Anderson, Howard ;

Buchhave, Lars ;

Ciardi, David ;

Walkowicz, Lucianne ;

Sherry, William ;

Horch, Elliott ;

Isaacson, Howard ;

Everett, Mark E. ;

Fischer, Debra .

SCIENCE, 2010, 327 (5968) :977-980

[8] New limb-darkening coefficients for PHOENIX/1D model atmospheres I. Calculations for 1500 K ≤ Teff ≤ 4800 K Kepler, CoRot, Spitzer, uvby, UBVRIJHK, Sloan, and 2MASS photometric systems [J].

Claret, A. ;

Hauschildt, P. H. ;

Witte, S. .

ASTRONOMY & ASTROPHYSICS, 2012, 546

[9] The effect of stellar limb darkening values on the accuracy of the planet radii derived from photometric transit observations [J].

Csizmadia, Sz. ;

Pasternacki, Th. ;

Dreyer, C. ;

Cabrera, J. ;

Erikson, A. ;

Rauer, H. .

ASTRONOMY & ASTROPHYSICS, 2013, 549

[10] How stellar activity affects the size estimates of extrasolar planets [J].

Czesla, S. ;

Huber, K. F. ;

Wolter, U. ;

Schroeter, S. ;

Schmitt, J. H. M. M. .

ASTRONOMY & ASTROPHYSICS, 2009, 505 (03) :1277-1282

← 1 2 3 4 →