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WASP-25

From Wikipedia, the free encyclopedia
Star in the constellation Hydra
WASP-25
Observation data
Epoch J2000      Equinox J2000
ConstellationHydra[1]
Right ascension13h 01m 26.3760s[2]
Declination−27° 31′ 19.922″[2]
Apparent magnitude (V)11.87[3]
Characteristics
Evolutionary stagemain sequence[2]
Spectral typeG4[4]
Astrometry
Radial velocity (Rv)−2.698±0.0028[5] km/s
Proper motion (μ)RA: −29.264[2]mas/yr
Dec.: −6.196[2]mas/yr
Parallax (π)4.6501±0.0230 mas[2]
Distance701 ± 3 ly
(215 ± 1 pc)
Details[6]
Mass1.053±0.038 M
Radius0.924±0.018 R
Luminosity0.89[7] L
Surface gravity (log g)4.530±0.015 cgs
Temperature5,736±50 K
Metallicity[Fe/H]0.06±0.05 dex
Rotational velocity (v sin i)2.9±0.3[8] km/s
Age0.10+5.70
−0.10
 Gyr
Other designations
TOI-767,TIC 229047362,WASP-25,TYC 6706-861-1,2MASS J13012637-2731199,DENIS J130126.3-273120[9]
Database references
SIMBADdata
Exoplanet Archivedata

WASP-25 is aG-type main-sequence star about 701light-years away in theconstellation ofHydra.

Star characteristics

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WASP-25 is slightly metal-poor (85% of Solar amount) and is probably a young star which has just entered themain sequence.[4]

Planetary system

[edit]

Thehot Jupiter class planet WASP-25b was discovered around WASP-25 in 2010.[4] The planet would have an equilibrium temperature of 1212±35 K.ARossiter-McLaughlin effect based study in 2011 found a modest misalignment of the planetary orbit to the rotational axis of the parent star, equal to 14.6±6.7 degrees.[8] A habitability study in 2018 found WASP-25b does not adversely affect the stability of planetary orbits in the habitable zone of WASP-25.[10]

The WASP-25 planetary system[11]
Companion
(in order from star)
MassSemimajor axis
(AU)
Orbital period
(days)
EccentricityInclinationRadius
b0.574±0.042 MJ0.04738±0.000473.7648327(9)<0.08388.12±0.27[6]°1.247±0.032[6] RJ

References

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  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 atVizieR.
  2. ^abcdefVallenari, 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 atVizieR.
  3. ^Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars".Astronomy and Astrophysics.355:L27–L30.Bibcode:2000A&A...355L..27H.
  4. ^abcEnoch, B.; Cameron, A. Collier; Anderson, D. R.; Lister, T. A.; Hellier, C.; Maxted, P. F. L.; Queloz, D.; Smalley, B.; Triaud, A. H. M. J.; West, R. G.; Brown, D. J. A.; Gillon, M.; Hebb, L.; Lendl, M.; Parley, N.; Pepe, F.; Pollacco, D.; Segransan, D.; Simpson, E.; Street, R. A.; Udry, S. (2010)."WASP-25b: A 0.6 MJ planet in the Southern hemisphere".Monthly Notices of the Royal Astronomical Society: no.arXiv:1009.5917.doi:10.1111/j.1365-2966.2010.17550.x.S2CID 6314762.
  5. ^Soubiran, C.; Jasniewicz, G.; Chemin, L.; Zurbach, C.; Brouillet, N.; Panuzzo, P.; Sartoretti, P.; Katz, D.; Le Campion, J. -F.; Marchal, O.; Hestroffer, D.; Thévenin, F.; Crifo, F.; Udry, S.; Cropper, M.; Seabroke, G.; Viala, Y.; Benson, K.; Blomme, R.; Jean-Antoine, A.; Huckle, H.; Smith, M.; Baker, S. G.; Damerdji, Y.; Dolding, C.; Frémat, Y.; Gosset, E.; Guerrier, A.; Guy, L. P.; et al. (2018). "Gaia Data Release 2. The catalogue of radial velocity standard stars".Astronomy and Astrophysics.616: A7.arXiv:1804.09370.Bibcode:2018A&A...616A...7S.doi:10.1051/0004-6361/201832795.S2CID 52952408.
  6. ^abcSouthworth, John; Hinse, T. C.; Burgdorf, M.; Calchi Novati, S.; Dominik, M.; Galianni, P.; Gerner, T.; Giannini, E.; Gu, S.-H.; Hundertmark, M.; Jørgensen, U. G.; Juncher, D.; Kerins, E.; Mancini, L.; Rabus, M.; Ricci, D.; Schäfer, S.; Skottfelt, J.; Tregloan-Reed, J.; Wang, X.-B.; Wertz, O.; Alsubai, K. A.; Andersen, J. M.; Bozza, V.; Bramich, D. M.; Browne, P.; Ciceri, S.; d'Ago, G.; Damerdji, Y.; et al. (2014)."High-precision photometry by telescope defocussing – VI. WASP-24, WASP-25 and WASP-26★".Monthly Notices of the Royal Astronomical Society.444 (1):776–789.arXiv:1407.6253.Bibcode:2014MNRAS.444..776S.doi:10.1093/mnras/stu1492.S2CID 53641330.
  7. ^Ulmer-Moll, S.; Santos, N. C.; Figueira, P.; Brinchmann, J.; Faria, J. P. (2019). "Beyond the exoplanet mass-radius relation".Astronomy and Astrophysics.630: A135.arXiv:1909.07392.Bibcode:2019A&A...630A.135U.doi:10.1051/0004-6361/201936049.
  8. ^abBrown, D. J. A.; Cameron, A. Collier; Anderson, D. R.; Enoch, B.; Hellier, C.; Maxted, P. F. L.; Miller, G. R. M.; Pollacco, D.; Queloz, D.; Simpson, E.; Smalley, B.; Triaud, A. H. M. J.; Boisse, I.; Bouchy, F.; Gillon, M.; Hébrard, G. (2012)."Rossiter-McLaughlin effect measurements for WASP-16, WASP-25 and WASP-31★".Monthly Notices of the Royal Astronomical Society.423 (2):1503–1520.arXiv:1203.4971.Bibcode:2012MNRAS.423.1503B.doi:10.1111/j.1365-2966.2012.20973.x.S2CID 53445367.
  9. ^"WASP-25".SIMBAD.Centre de données astronomiques de Strasbourg. Retrieved2015-05-30.
  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.
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