Astronomy:Kepler-429
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Short description: Subdwarf B star
| Observation data 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[2] mas |
| 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 | |
| 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.
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]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b (unconfirmed) | — | 0.005541 | 0.21970 | 0[12] | — | — |
| c (unconfirmed) | — | 0.007197 | 0.32528 | 0[13] | — | — |
| d (unconfirmed) | — | 0.01324 | 0.81161 | 0[14] | — | — |
See also
References
- ↑ Staff (2 August 2008). "Finding the constellation which contains given sky coordinates". DJM.cc. http://djm.cc/constellation.html.
- ↑ 2.0 2.1 2.2 2.3 2.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 3.0 3.1 3.2 Jayasinghe, T; Kochanek, C S; Stanek, K Z; Shappee, B J; Holoien, T W-S; Thompson, Toda A; Prieto, J L; Dong, Subo et al. (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. doi:10.1093/mnras/sty838. ISSN 0035-8711. Bibcode: 2018MNRAS.477.3145J.
- ↑ 4.0 4.1 4.2 "Kepler-429 -- Hot subdwarf". SIMBAD. Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-id?Ident=Kepler-429.
- ↑ 5.0 5.1 5.2 5.3 Mathur, Savita; Huber, Daniel; Batalha, Natalie M.; Ciardi, David R.; Bastien, Fabienne A.; Bieryla, Allyson; Buchhave, Lars A.; Cochran, William D. et al. (2017). "Revised Stellar Properties of Kepler Targets for the Q1-17 (DR25) Transit Detection Run". The Astrophysical Journal Supplement Series 229 (2): 30. doi:10.3847/1538-4365/229/2/30. Bibcode: 2017ApJS..229...30M.
- ↑ 6.0 6.1 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. doi:10.3847/1538-4357/ab6605. Bibcode: 2020ApJ...890...23L.
- ↑ 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. doi:10.1093/mnras/stx2011. Bibcode: 2017MNRAS.472..700U.
- ↑ Silvotti, R.; Charpinet, S.; Green, E.; Fontaine, G.; Telting, J. H.; Østensen, R. H.; Van Grootel, V.; Baran, A. S. et al. (2014). "Keplerdetection of a new extreme planetary system orbiting the subdwarf-B pulsator KIC 10001893". Astronomy & Astrophysics 570: A130. doi:10.1051/0004-6361/201424509. Bibcode: 2014A&A...570A.130S.
- ↑ Blokesz, A. (July 2019). "Analysis of putative exoplanetary signatures found in light curves of two sdBV stars observed by Kepler". Astronomy & Astrophysics 627: A86. doi:10.1051/0004-6361/201835003. Bibcode: 2019A&A...627A..86B.
- ↑ "Eyes On Exoplanets – Exoplanet Exploration: Planets Beyond our Solar System". https://exoplanets.nasa.gov/eyes-on-exoplanets/#/system/KIC_10001893/.
- ↑ "KIC 10001893". https://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=KIC+10001893.
- ↑ "Eyes On Exoplanets – Exoplanet Exploration: Planets Beyond our Solar System". https://exoplanets.nasa.gov/eyes-on-exoplanets/#/planet/KIC_10001893_b/.
- ↑ "Eyes on Exoplanets-KIC 10001893 c". https://exoplanets.nasa.gov/eyes-on-exoplanets/#/planet/KIC_10001893_c/.
- ↑ "Eyes on Exoplanets-KIC 10001893 d". https://exoplanets.nasa.gov/eyes-on-exoplanets/#/planet/KIC_10001893_d/.
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