astro.wikisort.org - Planet
HAT-P-15 is a G-type main-sequence star about 630 light-years away. The star is older than Sun yet has a concentration of heavy elements roughly 190% of solar abundance.[2] The star has no noticeable starspot activity.[3]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 04h 24m 59.5348s[1] |
| Declination | +39° 27′ 38.3124″[1] |
| Apparent magnitude (V) | 12.41 |
| Characteristics | |
| Spectral type | G5V |
| Astrometry | |
| Radial velocity (Rv) | 31.21 km/s |
| Proper motion (μ) | RA: 14.403 mas/yr Dec.: -9.377 mas/yr |
| Parallax (π) | 5.1664 ± 0.0544 mas[1] |
| Distance | 631 ± 7 ly (194 ± 2 pc) |
| Details[2] | |
| Mass | 1.013±0.043 M☉ |
| Radius | 1.080±0.039 R☉ |
| Luminosity | 1.00±0.11 L☉ |
| Surface gravity (log g) | 4.38±0.03 cgs |
| Temperature | 5684±25 K |
| Metallicity | 0.272±0.031 |
| Rotational velocity (v sin i) | 2.0±0.5 km/s |
| Age | 6.8+2.5 −1.6 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
The spectroscopic survey in 2015 have failed to find any stellar companions to it,[4] yet imaging survey have identified a possibly two companion red dwarf stars at projected separations 1210 and 1370 AU, respectively.[5]
The star was named Berehynia in December 2019 by the Ukrainian amateur astronomers.[6]
Planetary system
In 2010 a transiting hot superjovian planet b (named Tryzub in 2019[6]) was detected. It has an equilibrium temperature of 904±20 K.[7] The orbital simulation shown the planets inward of orbit of b would in-spiral and be destroyed within time-span of less than billion years.[8] The planetary orbit is well aligned with the equatorial plane of the star, misalignment equal to 13±6 degrees.[9]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 1.946±0.066 MJ | 0.0964±0.0014 | 10.863502±0.000027 | 0.19±0.019 | 89.1±0.2° | 1.072±0.043 RJ |
References
- HAT-P-15 -- Star
- Teske, Johanna K.; Thorngren, Daniel; Fortney, Jonathan J.; Hinkel, Natalie; Brewer, John M. (2019), "Do Metal-Rich Stars Make Metal-Rich Planets? New Insights on Giant Planet Formation from Host Star Abundances", The Astronomical Journal, 158 (6): 239, arXiv:1912.00255, Bibcode:2019AJ....158..239T, doi:10.3847/1538-3881/ab4f79, S2CID 208527082
- Shkolnik, Evgenya L. (2013), "An Ultraviolet Investigation of Activity on Exoplanet Host Stars", The Astrophysical Journal, 766 (1): 9, arXiv:1301.6192, Bibcode:2013ApJ...766....9S, doi:10.1088/0004-637X/766/1/9, S2CID 118415788
- Piskorz, Danielle; Knutson, Heather A.; Ngo, Henry; Muirhead, Philip S.; Batygin, Konstantin; Crepp, Justin R.; Hinkley, Sasha; Morton, Timothy D. (2015), "Friends of Hot Jupiters III: An Infrared Spectroscopic Search for Low-Mass Stellar Companions", The Astrophysical Journal, 814 (2): 148, arXiv:1510.08062, Bibcode:2015ApJ...814..148P, doi:10.1088/0004-637X/814/2/148, S2CID 11525988
- Wöllert, Maria; Brandner, Wolfgang (2015), "A Lucky Imaging search for stellar sources near 74 transit hosts", Astronomy & Astrophysics, 579: A129, arXiv:1506.05456, Bibcode:2015A&A...579A.129W, doi:10.1051/0004-6361/201526525, S2CID 118903879
- "Украина выбрала имена для звезды и экзопланеты". LIGA.net. 18 December 2019. Retrieved 2019-12-18.
- Kovács, G.; Bakos, G. Á.; Hartman, J. D.; Torres, G.; Noyes, R. W.; Latham, D. W.; Howard, A. W.; Fischer, D. A.; Johnson, J. A.; Marcy, G. W.; Isaacson, H.; Sasselov, D. D.; Stefanik, R. P.; Esquerdo, G. A.; Fernandez, J. M.; Lázár, B. Béky J.; Papp, I.; Sári, P.; Sári, P. (2010), "HAT-P-15b: A 10.9-Day Extrasolar Planet Transiting a Solar-Type Star", The Astrophysical Journal, 724 (2): 866–877, arXiv:1005.5300, Bibcode:2010ApJ...724..866K, doi:10.1088/0004-637X/724/2/866, S2CID 119207125
- Van Laerhoven, Christa; Greenberg, Richard (2014), "Small Inner Companions of Warm Jupiters: Lifetimes and Legacies", The Astrophysical Journal, 778 (2): 182, arXiv:1401.7217, doi:10.1088/0004-637X/778/2/182, S2CID 119297266
- The GAPS Programme at TNG XXXVI. Measurement of the Rossiter-McLaughlin effect and revising the physical and orbital parameters of the HAT-P-15, HAT-P-17, HAT-P-21, HAT-P-26, HAT-P-29 eccentric planetary systems, 2022, arXiv:2205.10549
Constellation of Perseus | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||||
| Stars |
| ||||||||||||
| |||||||||||||
| Star clusters |
| ||||||||||||
| Nebulae |
| ||||||||||||
| Galaxies |
| ||||||||||||
| |||||||||||||
| |||||||||||||
 Category | |||||||||||||
 | This main-sequence-star-related article is a stub. You can help Wikipedia by expanding it. |
 | This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it. |
На других языках
- [en] HAT-P-15
[ru] HAT-P-15
HAT-P-15, Береги́ня[7] — звезда, которая находится в созвездии Персей на расстоянии около 619 световых лет от нас. Вокруг звезды обращается, как минимум, одна планета.Текст в блоке "Читать" взят с сайта "Википедия" и доступен по лицензии Creative Commons Attribution-ShareAlike; в отдельных случаях могут действовать дополнительные условия.
Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
2019-2025
WikiSort.org - проект по пересортировке и дополнению контента Википедии
WikiSort.org - проект по пересортировке и дополнению контента Википедии