J/ApJ/768/127 Q1-11 Kepler light curve of KIC 4862625 (Schwamb+, 2013)
Planet hunters: a transiting circumbinary planet in a quadruple star system.
Schwamb M.E., Orosz J.A., Carter J.A., Welsh W.F., Fischer D.A., Torres G.,
Howard A.W., Crepp J.R., Keel W.C., Lintott C.J., Kaib N.A., Terrell D.,
Gagliano R., Jek K.J., Parrish M., Smith A.M., Lynn S., Simpson R.J.,
Giguere M.J., Schawinski K.
<Astrophys. J., 768, 127 (2013)>
=2013ApJ...768..127S 2013ApJ...768..127S
ADC_Keywords: Binaries, eclipsing ; Planets ; Photometry
Keywords: binaries: eclipsing; planets and satellites: detection;
planets and satellites: general; stars: individual: KIC 4862625
Abstract:
We report the discovery and confirmation of a transiting circumbinary
planet (PH1b) around KIC 4862625, an eclipsing binary in the Kepler
field. The planet was discovered by volunteers searching the first six
Quarters of publicly available Kepler data as part of the Planet
Hunters citizen science project. Transits of the planet across the
larger and brighter of the eclipsing stars are detectable by visual
inspection every ∼137 days, with seven transits identified in Quarters
1-11. The physical and orbital parameters of both the host stars and
planet were obtained via a photometric-dynamical model, simultaneously
fitting both the measured radial velocities and the Kepler light curve
of KIC 4862625. The 6.18±0.17R⊕ planet orbits outside the
20 day orbit of an eclipsing binary consisting of an F dwarf
(1.734±0.044R☉, 1.528±0.087M☉) and M dwarf
(0.378±0.023R☉, 0.408±0.024M☉). For the planet, we
find an upper mass limit of 169M⊕ (0.531 Jupiter masses) at
the 99.7% confidence level. With a radius and mass less than that of
Jupiter, PH1b is well within the planetary regime. Outside the
planet's orbit, at ∼1000 AU, a previously unknown visual binary has
been identified that is likely bound to the planetary system, making
this the first known case of a quadruple star system with a transiting
planet.
Objects:
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RA (ICRS) DE Designation(s) (Periodb; PeriodA)
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19 52 51.63 +39 57 18.4 KIC 4862625 = Kepler-64 (Pb=138.506;PA=20.0002)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 27 43247 *Reduced Kepler light curve for KIC 4862625 for
quarters 1-11
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Note on table1.dat: Parameters used to measure stellar eclipse timing
variations, timing offsets of the planet transits, and changes in planet
transit duration described in Section 3.
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See also:
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
J/MNRAS/437/3473 : KEBC temperature catalogue (Armstrong+, 2014)
J/AJ/147/45 : Kepler mission. IV. Close binaries (Conroy+, 2014)
J/ApJS/211/2 : Stellar properties of Q1-16 Kepler targets (Huber+, 2014)
J/ApJS/204/24 : Kepler planetary candidates. III. (Batalha+, 2013)
J/A+A/552/A119 : Planet-star and moon-planet interaction (Saur+, 2013)
J/A+A/546/A10 : Multiplicity in planet-host stars transits (Lillo-Box+, 2012)
J/other/Sci/337.1511 : Kepler-47 transits (Orosz+, 2012)
J/AJ/144/42 : Infrared photometry of 90 KOIs (Adams+, 2012)
J/AJ/144/24 : The Kepler-INT survey (Greiss+, 2012)
J/ApJS/199/24 : The first three quarters of Kepler mission (Tenenbaum+, 2012)
J/ApJS/197/8 : Kepler's cand. multiple transiting planets (Lissauer+, 2011)
J/AJ/143/137 : Minima of eclipsing binaries from Kepler survey (Gies+, 2012)
J/AJ/142/160 : Kepler Mission. II. 2165 eclipsing binaries (Slawson+, 2011)
J/AJ/142/112 : KIC photometric calibration (Brown+, 2011)
J/AJ/141/83 : Eclipsing binaries in Kepler first data release (Prsa+, 2011)
J/AJ/141/78 : Low-mass eclipsing binaries in KIC (Coughlin+, 2011)
J/A+A/529/A89 : Kepler satellite variability study (Debosscher+, 2011)
J/other/A+ARV/18.67 : Accurate masses and radii of normal stars (Torres+, 2010)
J/AJ/137/3646 : Radial velocities of 10 close binaries (Pribulla+, 2009)
J/ApJS/159/141 : Spectroscopic properties of cool stars. I. (Valenti+, 2005)
J/A+AS/124/75 : Multiple star catalogue (MSC) (Tokovinin 1997-1999)
http://archive.stsci.edu/kepler/ : MAST Kepler home page
http://www.planethunters.org/ : Planet hunters home page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 F11.7 d BJD Barycentric Julian Date of the observation;
BJD-2455000
13- 19 F7.5 --- RFlux [0.9865/1.0023] Relative flux
21- 27 F7.5 --- e_RFlux [0.0001/0.0002] Error in RFlux
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 28-Nov-2014