Planet kappa And b

Name kappa And b
Planet Status Confirmed
Discovered in 2013
Mass 13.0 ( -2.0 +12.0 ) MJ
Mass*sin(i)
Semi-Major Axis 100.0 ( -46.0 +27.0 ) AU +
Orbital Period 215000.0 (± 100000.0) day
Eccentricity 0.69 ( -0.1 +0.14 )
ω 129.5 ( -35.0 +30.0 ) deg
Tperi
Radius 1.2 ( -0.1 +0.2 ) RJ
Inclination 121.0 (± 10.0) deg
Update 2018-10-24
Detection Method Imaging
Mass Detection Method Spectrum
Radius Detection Method
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature
Measured temperature 1850.0 K +
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH) 4.5
Alternate Names

Star

kappa And
Name kappa And
Distance 50.0 (± 0.1) pc +
Spectral type B9IV
Apparent magnitude V 4.14
Mass 2.8 ( -0.2 +0.1 ) MSun +
Age 0.047 ( -0.04 +0.027 ) Gyr +
Effective temperature 1127.0 ( -44.0 +421.0 ) K +
Radius 2.29 (± 0.06) RSun
Metallicity [Fe/H] -0.36 (± 0.09)
Detected Disc
Magnetic Field
RA2000 23:40:25.0
Dec2000 +44:20:02
Alternate Names HD 222439, HR 8976, HIP 116805, 19 Andromedae
Planetary system 1 planet

Remarks

The age of the system has been called into question, other estimations giving a much older age of ~200 Myr (see for example Hinkley et al. 2013).

More data

Atmospheric parameters

Temperatures

Data Source Type Result Value Result Figure Notes Reference

Molecules

Molecule Data Source Type Result Value Result Figure Notes Reference
H2O Measurements Detected 2016 - TODOROV K.

Observability Predictor

Remarks

Bonnefoy et al. (2014): models with dust reproduce the spectral distribution better.

Hinkley et al. (2013) give the significantly different estimate for the age of the system of 200±100 Myr, from which they infer a much higher mass: 50-13+16 Mjup, and an effective temperature of 2040±60K.

Carson et al. (2013) derive a semimajor axis of 61-20+50 AU from the projected separation of 55±2 AU using the method of (Dupuy et al., ApJ, 721, 1725, 2010).


Related publications

Two decades of Exoplanetary Science with Adaptive Optics G. Chauvin
2018 CHAUVIN, G.
SPIE Astronomical Telescopes and Instrumentation
arxiv   ADS  

SCExAO/CHARIS Near-Infrared Direct Imaging, Spectroscopy, and Forward-Modeling of kappa And b: A Likely Young, Low-Gravity Superjovian Companion
2018 CURRIE Th., BRANDT T., UYAMA T., NIELSEN E., BLUNT S. et al.
Astron. J., accepted
arxiv  

Orbits for the Impatient: A Bayesian Rejection Sampling Method for Quickly Fitting the Orbits of Long-Period Exoplanets
2017 BLUNT S., NIELSEN E., DE ROSA R., KONOPACKY Q., RYAN D. et al.
Astron. J., 153, 229
paper  arxiv  ADS

The Age of the Directly-Imaged Planet Host Star $κ$ Andromedae Determined From Interferometric Observations
2016 JONES J., WHITE R., QUINN S., IRELAND M., BOYAJIAN T. et al.
ApJ Letters, 822, L3
paper  arxiv  ADS  

SPOTS: The Search for Planets Orbiting Two Stars: II. First constraints on the frequency of sub-stellar companions on wide circumbinary orbits
2016 BONAVITA M., DESIDERA S., THALMANN Ch., JANSON M., VIGAN A. et al.
Astron. & Astrophys., 593, A38
paper  arxiv  ADS  

The Water Abundance of the Directly Imaged Substellar Companion κ And b Retrieved from a Near Infrared Spectrum
2016 TODOROV K., LINE M., PINEDA J., MEYER M., QUANZ S. et al.
ApJ, 823, 14
paper   arxiv   ADS  

High-contrast imaging constraints on gas giant planet formation - The Herbig Ae/Be star opportunity
2015 QUANZ S.
J. Astron. & Spa. Sci., accepted
arxiv  

A Statistical Analysis of SEEDS and Other High-contrast Exoplanet Surveys: Massive Planets or Low-mass Brown Dwarfs?
2014 BRANDT T., McELWAIN M., TURNER E., MEDE K., SPIEGEL D. & 48 co-authors
ApJ, 794, 159
paper  arxiv   ADS  

The Moving Group Targets of the SEEDS High-Contrast Imaging Survey of Exoplanets and Disks: Results and Observations from the First Three Years
2014 BRANDT T., KUZUHARA M., McELWAIN M., SCHLIEDER J., WISNIEWSKI J. & 50 additional authors
ApJ , 786, 1
paper   arxiv   ADS  

Characterization of the gaseous companion κ Andromedae b: New Keck and LBTI high-contrast observations
2014 BONNEFOY M., CURRIE T., MARLEAU G.-D., SCHLIEDER J., WISNIEWSKI J. & 62 additional authors
Astron. & Astrophys., 562, A111
paper   arxiv   ADS  

Colour-magnitude diagrams of transiting Exoplanets - II. A larger sample from photometric distances
2014 TRIAUD A., LANOTTE A., SMALLEY B. & GILLON M.
MNRAS, 444, 711
paper   arxiv   ADS  

The kappa Andromedae System: New Constraints on the Companion Mass, System Age, and Further Multiplicity
2013 HINKLEY S., PUEYO L., FAHERTY J., OPPENHEIMER B., MAMAJEK E. & 27 co-authors
ApJ, 779, 153
paper   arxiv   ADS  

Direct Imaging Discovery of a ‘Super-Jupiter’ Around the late B-Type Star κ And
2013 CARSON J., THALMANN C., JANSON M., KOZAKIS T., BONNEFOY M. & 51 additional authors
ApJ Letters, 763, L32
paper   arxiv   ADS