Astronomy:WASP-37
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Short description: Star in constellation of Virgo
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Virgo |
| Right ascension | 14h 47m 46.5618s |
| Declination | 01° 03′ 53.8024″ |
| Apparent magnitude (V) | 12.704 |
| Characteristics | |
| Evolutionary stage | main sequence star |
| Spectral type | G2V |
| U−B color index | 0.022 |
| B−V color index | 0.628 |
| V−R color index | 0.337 |
| J−H color index | 0.378 |
| J−K color index | 0.406 |
| Astrometry | |
| Radial velocity (Rv) | 7.927±0.0042 km/s |
| Proper motion (μ) | RA: -28.082±0.069 mas/yr Dec.: 18.018±0.062 mas/yr |
| Parallax (π) | 2.5183 ± 0.0493 mas |
| Distance | 1,300 ± 30 ly (397 ± 8 pc) |
| Details[1] | |
| Mass | 0.926+0.039−0.034 M☉ |
| Radius | 1.071+0.019−0.018 R☉ |
| Surface gravity (log g) | 4.346+0.023−0.021 cgs |
| Temperature | 5795+69−64 K |
| Metallicity [Fe/H] | -0.098+0.05−0.06 dex |
| Rotational velocity (v sin i) | 2.4±1.6[2] km/s |
| Age | 10.31+4.01−2.55[3] Gyr |
| Other designations | |
WASP-37, DENIS J144746.5+010354, 2MASS J14474655+0103538, Gaia DR2 3652176997218325888[4] | |
| Database references | |
| SIMBAD | data |
WASP-37 is a yellow main sequence star in the constellation of Virgo.
Star characteristics
WASP-37 has a low metallicity of just 40% of solar,[5] and is likely older than Sun.[2] WASP-37 does not have noticeable flare activity.[6]
Planetary system
The "Hot Jupiter" class planet WASP-37b was discovered around WASP-37 in 2010.[5] The study in 2018 has found the stability of orbits in habitable zone of WASP-37 is not significantly affected by WASP-37b planet.[7]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 1.79±0.17 MJ | 0.045±0.002 | 3.5774807±0.0000019 | 0 | 88.78° | 1.16+0.07−0.06 RJ |
References
- ↑ Wang, Xian-Yu; Wang, Yong-Hao; Wang, Songhu; Wu, Zhen-Yu; Rice, Malena; Zhou, Xu; Hinse, Tobias C.; Liu, Hui-Gen et al. (2021), "Transiting Exoplanet Monitoring Project (TEMP). VI. The Homogeneous Refinement of System Parameters for 39 Transiting Hot Jupiters with 127 New Light Curves", The Astrophysical Journal Supplement Series 255 (1): 15, doi:10.3847/1538-4365/ac0835, Bibcode: 2021ApJS..255...15W
- ↑ 2.0 2.1 Brown, D. J. A. (2014). "Discrepancies between isochrone fitting and gyrochronology for exoplanet host stars?". Monthly Notices of the Royal Astronomical Society 442 (2): 1844–1862. doi:10.1093/mnras/stu950. Bibcode: 2014MNRAS.442.1844B.
- ↑ Maxted, P. F. L.; Koen, C.; Smalley, B. (2011). "UBV(RI)C photometry of transiting planet hosting stars". Monthly Notices of the Royal Astronomical Society 418 (2): 1039–1042. doi:10.1111/j.1365-2966.2011.19554.x. Bibcode: 2011MNRAS.418.1039M.
- ↑ WASP-37 -- Star
- ↑ 5.0 5.1 5.2 Simpson, E. K.; Faedi, F.; Barros, S. C. C.; Brown, D. J. A.; Cameron, A. Collier; Hebb, L.; Pollacco, D.; Smalley, B. et al. (2011). "WASP-37b: A 1.8MJEXOPLANET TRANSITING a METAL-POOR STAR". The Astronomical Journal 141 (1): 8. doi:10.1088/0004-6256/141/1/8. Bibcode: 2011AJ....141....8S.
- ↑ Shkolnik, Evgenya L. (2013). "An Ultraviolet Investigation of Activity on Exoplanet Host Stars". The Astrophysical Journal 766 (1): 9. doi:10.1088/0004-637X/766/1/9. Bibcode: 2013ApJ...766....9S.
- ↑ 7.0 7.1 Georgakarakos, Nikolaos; Eggl, Siegfried; Dobbs-Dixon, Ian (2018). "Giant Planets: Good Neighbors for Habitable Worlds?". The Astrophysical Journal 856 (2): 155. doi:10.3847/1538-4357/aaaf72. Bibcode: 2018ApJ...856..155G.
- ↑ Mallonn, M.; von Essen, C.; Herrero, E.; Alexoudi, X.; Granzer, T.; Sosa, M.; Strassmeier, K. G.; Bakos, G. et al. (2019). "Ephemeris refinement of 21 hot Jupiter exoplanets with high timing uncertainties". Astronomy & Astrophysics 622: A81. doi:10.1051/0004-6361/201834194. Bibcode: 2019A&A...622A..81M.
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