WASP-37

Last updated
WASP-37
Observation data
Epoch J2000       Equinox J2000
Constellation Virgo [1]
Right ascension 14h 47m 46.5620s [2]
Declination 01° 03′ 53.800″ [2]
Apparent magnitude  (V)12.704 [3]
Characteristics
Evolutionary stage main sequence [4]
Spectral type G2V [4]
Astrometry
Radial velocity (Rv)7.927±0.0042 [5] km/s
Proper motion (μ)RA: −28.214(16) mas/yr [2]
Dec.: +18.201(42) mas/yr [2]
Parallax (π)2.6257±0.0173  mas [2]
Distance 1,242 ± 8  ly
(381 ± 3  pc)
Details [6]
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 5,795+69
−64  K
Metallicity [Fe/H]−0.098+0.05
−0.06  dex
Rotational velocity (v sin i)2.4±1.6 [7]  km/s
Age 10.31+4.01
−2.55 [8]   Gyr
Other designations
TOI-5674, TIC 368805700, WASP-37, 2MASS J14474655+0103538, DENIS J144746.5+010354 [3]
Database references
SIMBAD data
Exoplanet Archive data

WASP-37 is a G-type main-sequence star about 1,240 light-years away in the constellation of Virgo.

Contents

Star characteristics

WASP-37 has a low metallicity of just 40% of solar, [4] and is likely older than the Sun. [7] WASP-37 does not have noticeable flare activity. [9]

Planetary system

The hot Jupiter class planet WASP-37b was discovered around WASP-37 in 2010. [4] A study in 2018 found that the stability of orbits in the habitable zone of WASP-37 is not significantly affected by WASP-37b. [10]

The WASP-37 planetary system [11]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b1.72±0.17  MJ 0.0447+0.0018
−0.0020		3.5774807(19) [12] <0.05288.82+0.77
−0.86 ° 		1.16+0.07
−0.06  RJ

References

  1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific . 99 (617): 695. Bibcode:1987PASP...99..695R. doi: 10.1086/132034 . Constellation record for this object at VizieR.
  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 "WASP-37". SIMBAD . Centre de données astronomiques de Strasbourg.
  4. 1 2 3 4 Simpson, E. K.; Faedi, F.; Barros, S. C. C.; Brown, D. J. A.; Cameron, A. Collier; Hebb, L.; Pollacco, D.; Smalley, B.; Todd, I.; Butters, O. W.; Hébrard, G.; McCormac, J.; Miller, G. R. M.; Santerne, A.; Street, R. A.; Skillen, I.; Triaud, A. H. M. J.; Anderson, D. R.; Bento, J.; Boisse, I.; Bouchy, F.; Enoch, B.; Haswell, C. A.; Hellier, C.; Holmes, S.; Horne, K.; Keenan, F. P.; Lister, T. A.; Maxted, P. F. L.; et al. (2011). "WASP-37b: A 1.8 M J Exoplanet Transiting a Metal-poor Star". The Astronomical Journal. 141 (1): 8. arXiv: 1008.3096 . Bibcode:2011AJ....141....8S. doi:10.1088/0004-6256/141/1/8. S2CID   20036137.
  5. ↑ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR.
  6. ↑ Wang, Xian-Yu; Wang, Yong-Hao; Wang, Songhu; Wu, Zhen-Yu; Rice, Malena; Zhou, Xu; Hinse, Tobias C.; Liu, Hui-Gen; Ma, Bo; Peng, Xiyan; Zhang, Hui; Yu, Cong; Zhou, Ji-Lin; Laughlin, Gregory (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, arXiv: 2105.14851 , Bibcode:2021ApJS..255...15W, doi: 10.3847/1538-4365/ac0835 , S2CID   235253975
  7. 1 2 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. arXiv: 1406.4402 . Bibcode:2014MNRAS.442.1844B. doi: 10.1093/mnras/stu950 . S2CID   56052792.
  8. ↑ 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. arXiv: 1108.0349 . Bibcode:2011MNRAS.418.1039M. doi: 10.1111/j.1365-2966.2011.19554.x . S2CID   117056033.
  9. ↑ 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.
  10. ↑ Georgakarakos, Nikolaos; Eggl, Siegfried; Dobbs-Dixon, Ian (2018). "Giant Planets: Good Neighbors for Habitable Worlds?". The Astrophysical Journal. 856 (2): 155. arXiv: 1804.02183 . Bibcode:2018ApJ...856..155G. doi: 10.3847/1538-4357/aaaf72 . S2CID   119522834.
  11. ↑ Bonomo, A. S.; Desidera, S.; et al. (June 2017). "The GAPS Programme with HARPS-N at TNG. XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy & Astrophysics . 602: A107. arXiv: 1704.00373 . Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882. S2CID   118923163.
  12. ↑ Mallonn, M.; von Essen, C.; Herrero, E.; Alexoudi, X.; Granzer, T.; Sosa, M.; Strassmeier, K. G.; Bakos, G.; Bayliss, D.; Brahm, R.; Bretton, M.; Campos, F.; Carone, L.; Colón, K. D.; Dale, H. A.; Dragomir, D.; Espinoza, N.; Evans, P.; Garcia, F.; Gu, S.-H.; Guerra, P.; Jongen, Y.; Jordán, A.; Kang, W.; Keles, E.; Kim, T.; Lendl, M.; Molina, D.; Salisbury, M.; et al. (2019). "Ephemeris refinement of 21 hot Jupiter exoplanets with high timing uncertainties". Astronomy & Astrophysics. 622: A81. arXiv: 1812.05882 . Bibcode:2019A&A...622A..81M. doi:10.1051/0004-6361/201834194. S2CID   92990448.
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