Kepler-429

Last updated
Kepler-429
Observation data
Epoch J2000.0        Equinox J2000.0 (ICRS)
Constellation Lyra [1]
Right ascension 19h 09m 33.4137s [2]
Declination +46° 59′ 04.108″ [2]
Apparent magnitude  (V)14.69 (var.) [3]
Characteristics
Evolutionary stage Subdwarf B star
Spectral type sdB [4]
Apparent magnitude  (J)16.36±0.10 [4]
Variable type V361 Hya [3]
Astrometry
Proper motion (μ)RA: 1.133 [2]   mas/yr
Dec.: −5.907 [2]   mas/yr
Parallax (π)0.5573 ± 0.0372  mas [2]
Distance 5,900 ± 400  ly
(1,800 ± 100  pc)
Details
Mass 0.47 [5]   M☉
Radius 0.24 [5]   R☉
Luminosity 3.54 [6]   L☉
Surface gravity (log g)5.35 [6]   cgs
Temperature 27,500 [5]   K
Metallicity [Fe/H]0.0 [5]   dex
Other designations
Gaia DR2  2130473176626619136, Kepler-429, KIC  10001893, 2MASS J19093340+4659041 [4]
Database references
SIMBAD data
Exoplanet Archive data

Kepler-429 (KIC 10001893) is a variable subdwarf B star in the constellation Lyra, about 5,900 light years away.

Contents

The brightness of Kepler-429 changes unpredictably by up to 0.13 magnitudes. [3] It has been classified as a V361 Hydrae variable, but also as a V1093 Herculis variable, which typically has slower variations and a cooler temperature. Over 100 pulsation modes were identified with periods from 256 seconds to over three hours. [7]

Planetary system

Kepler-429 has been reported to have three possible exoplanets, [8] though their existence is questioned. [9] They were detected by orbital brightness modulation. [10]

The KIC 10001893 planetary system [11]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b(unconfirmed)—0.0055410.219700 [12] ——
c(unconfirmed)—0.0071970.325280 [13] ——
d(unconfirmed)—0.013240.811610 [14] ——

See also

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References

  1. ↑ Staff (2 August 2008). "Finding the constellation which contains given sky coordinates". DJM.cc. Retrieved 2 January 2021.
  2. 1 2 3 4 5 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  3. 1 2 3 Jayasinghe, T; Kochanek, C S; Stanek, K Z; Shappee, B J; Holoien, T W-S; Thompson, Toda A; Prieto, J L; Dong, Subo; Pawlak, M; Shields, J V; Pojmanski, G; Otero, S; Britt, C A; Will, D (1 July 2018). "The ASAS-SN catalogue of variable stars I: The Serendipitous Survey". Monthly Notices of the Royal Astronomical Society. 477 (3): 3145–3163. arXiv: 1803.01001 . Bibcode:2018MNRAS.477.3145J. doi: 10.1093/mnras/sty838 . ISSN   0035-8711.
  4. 1 2 3 "Kepler-429 -- Hot subdwarf". SIMBAD . Centre de Données astronomiques de Strasbourg . Retrieved 2 January 2021.
  5. 1 2 3 4 Mathur, Savita; Huber, Daniel; Batalha, Natalie M.; Ciardi, David R.; Bastien, Fabienne A.; Bieryla, Allyson; Buchhave, Lars A.; Cochran, William D.; Endl, Michael; Esquerdo, Gilbert A.; Furlan, Elise; Howard, Andrew; Howell, Steve B.; Isaacson, Howard; Latham, David W.; MacQueen, Phillip J.; Silva, David R. (2017). "Revised Stellar Properties of Kepler Targets for the Q1-17 (DR25) Transit Detection Run". The Astrophysical Journal Supplement Series. 229 (2): 30. arXiv: 1609.04128 . Bibcode:2017ApJS..229...30M. doi: 10.3847/1538-4365/229/2/30 . S2CID   39426786.
  6. 1 2 Loyd, R. O. Parke; Shkolnik, Evgenya L.; Schneider, Adam C.; Richey-Yowell, Tyler; Barman, Travis S.; Peacock, Sarah; Pagano, Isabella (2020). "Current Population Statistics do Not Favor Photoevaporation over Core-powered Mass Loss as the Dominant Cause of the Exoplanet Radius Gap". The Astrophysical Journal. 890 (1): 23. arXiv: 1912.12305 . Bibcode:2020ApJ...890...23L. doi: 10.3847/1538-4357/ab6605 . S2CID   209516410.
  7. ↑ Uzundag, M.; Baran, A. S.; Østensen, R. H.; Reed, M. D.; Telting, J. H.; Quick, B. K. (2017). "KIC 10001893: A pulsating SDB star with multiple trapped modes". Monthly Notices of the Royal Astronomical Society. 472 (1): 700. arXiv: 1812.05675 . Bibcode:2017MNRAS.472..700U. doi: 10.1093/mnras/stx2011 .
  8. ↑ Silvotti, R.; Charpinet, S.; Green, E.; Fontaine, G.; Telting, J. H.; Østensen, R. H.; Van Grootel, V.; Baran, A. S.; Schuh, S.; Fox Machado, L. (2014). "Keplerdetection of a new extreme planetary system orbiting the subdwarf-B pulsator KIC 10001893". Astronomy & Astrophysics. 570: A130. arXiv: 1409.6975 . Bibcode:2014A&A...570A.130S. doi:10.1051/0004-6361/201424509. S2CID   46974308.
  9. ↑ Blokesz, A.; et al. (July 2019). "Analysis of putative exoplanetary signatures found in light curves of two sdBV stars observed by Kepler". Astronomy & Astrophysics . 627: A86. arXiv: 1906.03321 . Bibcode:2019A&A...627A..86B. doi:10.1051/0004-6361/201835003. S2CID   182952925.
  10. ↑ "Eyes On Exoplanets – Exoplanet Exploration: Planets Beyond our Solar System". exoplanets.nasa.gov. Retrieved 2023-12-21.
  11. ↑ "KIC 10001893". NASA Exoplanet Archive . Retrieved 2 January 2021.
  12. ↑ "Eyes On Exoplanets – Exoplanet Exploration: Planets Beyond our Solar System". exoplanets.nasa.gov. Retrieved 2023-12-21.
  13. ↑ "Eyes on Exoplanets-KIC 10001893 c".
  14. ↑ "Eyes on Exoplanets-KIC 10001893 d".
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