Kepler-411

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Kepler-411
Observation data
Epoch J2000      Equinox J2000
Constellation Cygnus
Right ascension 19h 10m 25.3471s[1]
Declination +49° 31′ 23.7119″[1]
Apparent magnitude (V) 12.55[1]
Characteristics
Kepler-411
Evolutionary stage main-sequence star
Spectral type K3V
Kepler-411B
Astrometry
Radial velocity (Rv)-20.7±1.5[2] km/s
Proper motion (μ) RA: 13.611[2] mas/yr
Dec.: 32.543[2] mas/yr
Parallax (π)6.53126 ± 0.00796[2] mas
Distance499.4 ± 0.6 ly
(153.1 ± 0.2 pc)
Position (relative to Kepler-411)[3]
ComponentKepler-411B
Epoch of observation2012
Angular distance3.4±0.06″
Position angle331±3°
Observed separation
(projected)		520 AU
Details[4]
Surface gravity (log g)4.69±0.2 cgs
Temperature4920±100 K
Metallicity [Fe/H]0.11±0.1 dex
Rotation10.52 d[5]
Age0.212±0.031[6] Gyr
Other designations
KOI-1781, KIC 11551692, 2MASS J19102533+4931237[1]
Kepler-411: Gaia EDR3 2132768956905956352
Kepler-411B: Gaia EDR3 2132768956904826624
Database references
SIMBADdata

Kepler-411 is a binary star system. Its primary star Kepler-411 is a K-type main-sequence star, orbited by the red dwarf star Kepler-411B on a wide orbit, discovered in 2012.[3]

The primary star's surface temperature is 4920±100 K. Kepler-411 is similar to the Sun in its concentration of heavy elements, with a metallicity Fe/H index of 0.11±0.1,[4] but is much younger at an age of 212±31 million years.[6]

Kepler-411 exhibits significant starspot activity, with starspots covering 1.7+0.3
−0.2% of the stellar surface.[7] Darker starspots are concentrated around the equator of the star. Kepler-411 exhibits differential rotation, but with smaller amount of differential shear compared to the Sun.[5]

Planetary system[]

In 2013, one planet, named , was discovered,[8] followed by planet in 2016, and planet in 2018. Three planets were discovered by the transit method, while was discovered in 2019[9] by the transit-timing variation and radial velocity method.[6]


The Kepler-411 planetary system
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
[10] 0.08055±0.00818 MJ 0.0375±0.0008 3.005156±0.000002 0.146+0.004
−0.005 		87.4±0.1° 0.214±0.005 RJ
 [es][11] 0.08306±0.01856 MJ 0.0739±0.001 7.834436247±0.000001137[12] 0.108+0.003
−0.004 		88.61±0.04° 0.394±0.006 RJ
[13] 0.04782±0.01605 MJ 0.279±0.004 58.02023116±0.00004203[12] 0.128±0.003 89.43±0.02° 0.296±0.009 RJ
[14] 0.03398±0.00346 MJ 0.186±0.003 31.509728±0.000085 0.016+0.002
−0.001 		88.04±0.02° —

References[]

  1. ^ a b c d "Kepler-411". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-22.
  2. ^ a b c d Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. Gaia EDR3 record for this source at VizieR.
  3. ^ a b Ziegler, Carl; Law, Nicholas M.; Baranec, Christoph; Riddle, Reed; Duev, Dmitry A.; Howard, Ward; Jensen-Clem, Rebecca; Kulkarni, S. R.; Morton, Tim; Salama, Maïssa (2017), "Robo-AO Kepler survey. IV. The effect of nearby stars on 3857 planetary candidate systems", The Astronomical Journal, 155 (4): 161, arXiv:1712.04454, doi:10.3847/1538-3881/aab042, S2CID 119088873
  4. ^ a b Furlan, E.; Ciardi, D. R.; Cochran, W. D.; Everett, M. E.; Latham, D. W.; Marcy, G. W.; Buchhave, L. A.; Endl, M.; Isaacson, H.; Petigura, E. A.; Gautier, T. N.; Huber, D.; Bieryla, A.; Borucki, W. J.; Brugamyer, E.; Caldwell, C.; Cochran, A.; Howard, A. W.; Howell, S. B.; Johnson, M. C.; MacQueen, P. J.; Quinn, S. N.; Robertson, P.; Mathur, S.; Batalha, N. M. (2018), "The Kepler Follow-Up Observation Program. II. Stellar Parameters from Medium- and High-Resolution Spectroscopy", The Astrophysical Journal, 861 (2): 149, arXiv:1805.12089, Bibcode:2018ApJ...861..149F, doi:10.3847/1538-4357/aaca34, S2CID 119243987
  5. ^ a b Araújo, Alexandre; Valio, Adriana (2021), "Kepler-411 differential rotation from three transiting planets", The Astrophysical Journal, 907 (1): L5, arXiv:2101.07692, Bibcode:2021ApJ...907L...5A, doi:10.3847/2041-8213/abd3a7, S2CID 231639459
  6. ^ a b c Lillo-Box, J.; Lopez, T. A.; Santerne, A.; Nielsen, L. D.; Barros, S. C. C.; Deleuil, M.; Acuña, L.; Mousis, O.; Sousa, S. G.; Adibekyan, V.; Armstrong, D. J.; Barrado, D.; Bayliss, D.; Brown, D. J. A.; Demangeon, O. D. S.; Dumusque, X.; Figueira, P.; Hojjatpanah, S.; Osborn, H. P.; Santos, N. C.; Udry, S. (2020), "Masses for the seven planets in K2-32 and K2-233. Four diverse planets in resonant chain and the first young rocky worlds", Astronomy & Astrophysics, A48: 640, arXiv:2006.01102, Bibcode:2020A&A...640A..48L, doi:10.1051/0004-6361/202037896, S2CID 219176756
  7. ^ Morris, Brett M. (2020), "A relationship between stellar age and spot coverage", The Astrophysical Journal, 893 (1): 67, arXiv:2002.09135, Bibcode:2020ApJ...893...67M, doi:10.3847/1538-4357/ab79a0, S2CID 211252547
  8. ^ Wang, Ji; Xie, Ji-Wei; Barclay, Thomas; Fischer, Debra A. (2013), "Influence of Stellar Multiplicity On Planet Formation. I. Evidence of Suppressed Planet Formation Due to Stellar Companions Within 20 AU and Validation of Four Planets From the Kepler Multiple Planet Candidates", The Astrophysical Journal, 783: 4, arXiv:1309.7097, doi:10.1088/0004-637X/783/1/4, S2CID 119214390
  9. ^ Sun, L.; Ioannidis, P.; Gu, S.; Schmitt, J. H. M. M.; Wang, X.; Kouwenhoven, M. B. N. (2019), "Kepler-411: a four-planet system with an active host star", Astronomy & Astrophysics, 624: A15, arXiv:1902.09719, Bibcode:2019A&A...624A..15S, doi:10.1051/0004-6361/201834275, S2CID 102481339
  10. ^ Kepler-411b on exoplanet.eu
  11. ^ Kepler-411c on exoplanet.eu
  12. ^ a b Battley, Matthew P; et al. (10 March 2021). "Revisiting the Kepler field with TESS: Improved ephemerides using TESS 2 min data". Monthly Notices of the Royal Astronomical Society. 503 (3): 4092–4104. arXiv:2103.03259. Bibcode:2021MNRAS.503.4092B. doi:10.1093/mnras/stab701.
  13. ^ Kepler-411d on exoplanet.eu
  14. ^ Kepler-411e on exoplanet.eu

Coordinates: Sky map 19h 10m 25.3471s, +49° 31′ 23.7119″

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