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WASP-52
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pegasus[1] |
| Right ascension | 23h 13m 58.7576s[2] |
| Declination | +08° 45′ 40.572″[2] |
| Apparent magnitude (V) | 12.0[3] |
| Characteristics | |
| Evolutionary stage | Main sequence[3] |
| Spectral type | K2V[4] |
| Astrometry | |
| Radial velocity (Rv) | −0.54±0.61[2] km/s |
| Proper motion (μ) | RA: −6.942 mas/yr[2] Dec.: −44.330 mas/yr[2] |
| Parallax (π) | 5.7262±0.0134 mas[2] |
| Distance | 570 ± 1 ly (174.6 ± 0.4 pc) |
| Details[5] | |
| Mass | 0.87±0.03 M☉ |
| Radius | 0.79±0.02 R☉ |
| Luminosity | 0.4[6] L☉ |
| Surface gravity (log g) | 4.58±0.01[3] cgs |
| Temperature | 5,000±100 K |
| Metallicity [Fe/H] | 0.03±0.12 dex |
| Rotation | 16±2 d[3] |
| Rotational velocity (v sin i) | 1.77+0.19 −0.20[7] km/s |
| Age | 10.7+1.9 −4.5 Gyr |
| Other designations | |
| Anadolu, TIC 427685831, WASP-52, 2MASS J23135873+0845405[4] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
WASP-52, also named Anadolu, is a K-type main-sequence star about 570 light-years away in the constellation Pegasus. It is older than the Sun at 10.7+1.9
−4.5 billion years, but it has a similar fraction of heavy elements.[5]
The star has prominent starspot activity, with 3% to 14% of the stellar surface covered by areas 575±150 K cooler than the rest of the photosphere.[8]
A multiplicity survey in 2015 did not detect any stellar companions.[9]
Nomenclature
[edit]The designation WASP-52 comes from the Wide Angle Search for Planets.
This was one of the systems selected to be named in the 2019 NameExoWorlds campaign during the 100th anniversary of the IAU, which assigned each country a star and planet to be named. This system was assigned to Turkey. The approved names were Anadolu for the star, after the Turkish name for Anatolia, and Göktürk for the planet after the Göktürks, a historical group of Turkic people.[10][11]
Planetary system
[edit]In 2012 a transiting hot Jupiter planet, WASP-52b, was detected in a tight, circular orbit.[3] The planet was named Göktürk by Turkish astronomers in December 2019.[11] The planet has a small measured temperature difference between dayside (1481±34 K) and nightside (1224±77 K).[12] The planetary orbit is well aligned with the equatorial plane of the star, the misalignment being 5.47+4.61
−4.21°.[7]
Search for transit timing variation did not result in the detection of additional planets in system as of 2021.[13]
A transmission spectrum taken in 2020 has revealed the presence of hydrogen, sodium and potassium,[14] although the sodium and potassium lines may be attributable to volcanically active moons of the gas giant, not the planet itself.[15] The atmosphere has no high winds and relatively low-lying clouds, indicating it is not significantly enriched by heavy elements.[16] No signs of the planetary atmosphere escaping to space were detected in 2020,[17] but updated measurement in 2022 showed signs of helium escape, consistent with mass loss rate of 0.5% per billion years.[18]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b (Göktürk) | 0.459+0.022 −0.021 MJ |
0.02713+0.00031 −0.00032 |
1.7497835±0.0000011 | <0.092 | 85.35±0.20° | 1.27±0.03 RJ |
References
[edit]- ^ 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.
- ^ a b c d e 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.
- ^ a b c d e Hébrard, G.; Collier Cameron, A.; Brown, D. J. A.; Díaz, R. F.; Faedi, F.; Smalley, B.; Anderson, D. R.; Armstrong, D.; Barros, S. C. C.; Bento, J.; Bouchy, F.; Doyle, A. P.; Enoch, B.; Gómez Maqueo Chew, Y.; Hébrard, É. M.; Hellier, C.; Lendl, M.; Lister, T. A.; Maxted, P. F. L.; McCormac, J.; Moutou, C.; Pollacco, D.; Queloz, D.; Santerne, A.; Skillen, I.; Southworth, J.; Tregloan-Reed, J.; Triaud, A. H. M. J.; Udry, S.; et al. (2012), "WASP-52b, WASP-58b, WASP-59b, and WASP-60b: four new transiting close-in giant planets", Astronomy & Astrophysics, 549: A134, arXiv:1211.0810, doi:10.1051/0004-6361/201220363, S2CID 54502046
- ^ a b "WASP-52". SIMBAD. Centre de données astronomiques de Strasbourg.
- ^ a b c Bonomo, A. S.; Desidera, S.; Benatti, S.; Borsa, F.; Crespi, S.; Damasso, M.; Lanza, A. F.; Sozzetti, A.; Lodato, G.; Marzari, F.; Boccato, C.; Claudi, R. U.; Cosentino, R.; Covino, E.; Gratton, R.; Maggio, A.; Micela, G.; Molinari, E.; Pagano, I.; Piotto, G.; Poretti, E.; Smareglia, R.; Affer, L.; Biazzo, K.; Bignamini, A.; Esposito, M.; Giacobbe, P.; Hébrard, G.; Malavolta, L.; et al. (2017), "The GAPS Programme with HARPS-N@TNG XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets", Astronomy & Astrophysics, A107: 602, arXiv:1704.00373, Bibcode:2017A&A...602A.107B, doi:10.1051/0004-6361/201629882, S2CID 118923163
- ^ Johns, Daniel; Marti, Connor; Huff, Madison; McCann, Jacob; Wittenmyer, Robert A.; Horner, Jonathan; Wright, Duncan J. (2018). "Revised Exoplanet Radii and Habitability Using Gaia Data Release 2". The Astrophysical Journal Supplement Series. 239 (1): 14. arXiv:1808.04533. Bibcode:2018ApJS..239...14J. doi:10.3847/1538-4365/aae5fb.
- ^ a b Oshagh, M.; Triaud, A. H. M. J.; Burdanov, A.; Figueira, P.; Reiners, Ansgar; Santos, N. C.; Faria, J.; Boue, G.; Díaz, R. F.; Dreizler, S.; Boldt, S.; Delrez, L.; Ducrot, E.; Gillon, M.; Guzman Mesa, A.; Jehin, E.; Khalafinejad, S.; Kohl, S.; Serrano, L.; Udry, S. (2018), "Activity induced variation in spin-orbit angles as derived from Rossiter-McLaughlin measurements", Astronomy & Astrophysics, 619: A150, arXiv:1809.01027, Bibcode:2018A&A...619A.150O, doi:10.1051/0004-6361/201833709, S2CID 54578441
- ^ Rosich, A.; Herrero, E.; Mallonn, M.; Ribas, I.; Morales, J. C.; Perger, M.; Anglada-Escudé, G.; Granzer, T. (2020), "Correcting for chromatic stellar activity effects in transits with multiband photometric monitoring: Application to WASP-52", Astronomy and Astrophysics, 641: A82, arXiv:2007.00573, Bibcode:2020A&A...641A..82R, doi:10.1051/0004-6361/202037586, S2CID 225335318
- ^ Wöllert, Maria; Brandner, Wolfgang; Bergfors, Carolina; Henning, Thomas (2015), "A Lucky Imaging search for stellar companions to transiting planet host stars", Astronomy & Astrophysics, 575: A23, arXiv:1507.01938, Bibcode:2015A&A...575A..23W, doi:10.1051/0004-6361/201424091, S2CID 119250579
- ^ "Approved names". NameExoWorlds. IAU. Retrieved 24 June 2025.
- ^ a b 'Anadolu' and 'Göktürk': Turkey names its star and planet
- ^ May, E. M.; Stevenson, K. B.; Bean, Jacob L.; Bell, Taylor J.; Cowan, Nicolas B.; Dang, Lisa; Desert, Jean-Michel; Fortney, Jonathan J.; Keating, Dylan; Kempton, Eliza M.-R.; Komacek, Thaddeus D.; Lewis, Nikole K.; Mansfield, Megan; Morley, Caroline; Parmentier, Vivien; Rauscher, Emily; Swain, Mark R.; Zellem, Robert T.; Showman, Adam (2022), "A New Analysis of Eight Spitzer Phase Curves and Hot Jupiter Population Trends: Qatar-1b, Qatar-2b, WASP-52b, WASP-34b, and WASP-140b", The Astronomical Journal, 163 (6): 256, arXiv:2203.15059, Bibcode:2022AJ....163..256M, doi:10.3847/1538-3881/ac6261, S2CID 247778438
- ^ Sonbas, E.; Karaman, N.; Özdönmez, A.; Er, H.; Dhuga, K. S.; Göğüş, E.; Nasiroglu, I.; Zejmo, M. (2022), "Probing Transit Timing Variations of three hot Jupiters: HATP-36b, HATP-56b, and WASP-52b", Monthly Notices of the Royal Astronomical Society, 509 (4): 5102–5116, arXiv:2111.05220, doi:10.1093/mnras/stab3270
- ^ Chen, G.; Casasayas-Barris, N.; Pallé, E.; Yan, F.; Stangret, M.; Cegla, H. M.; Allart, R.; Lovis, C. (2020), "Detection of Na, K, and Hα absorption in the atmosphere of WASP-52b using ESPRESSO", Astronomy & Astrophysics, 635: A171, arXiv:2002.08379, Bibcode:2020A&A...635A.171C, doi:10.1051/0004-6361/201936986, S2CID 211204947
- ^ Oza, Apurva V.; Johnson, Robert E.; Lellouch, Emmanuel; Schmidt, Carl; Schneider, Nick; Huang, Chenliang; Gamborino, Diana; Gebek, Andrea; Wyttenbach, Aurelien; Demory, Brice-Olivier; Mordasini, Christoph; Saxena, Prabal; Dubois, David; Moullet, Arielle; Thomas, Nicolas (2019), "Sodium and Potassium Signatures of Volcanic Satellites Orbiting Close-in Gas Giant Exoplanets", The Astrophysical Journal, 885 (2): 168, arXiv:1908.10732, Bibcode:2019ApJ...885..168O, doi:10.3847/1538-4357/ab40cc, S2CID 201651224
- ^ Bruno, Giovanni; Lewis, Nikole K.; Alam, Munazza K.; López-Morales, Mercedes; Barstow, Joanna K.; Wakeford, Hannah R.; Sing, David K.; Henry, Gregory W.; Ballester, Gilda E.; Bourrier, Vincent; Buchhave, Lars A.; Cohen, Ofer; Mikal-Evans, Thomas; García Muñoz, Antonio; Lavvas, Panayotis; Sanz-Forcada, Jorge (2020), "WASP-52b. The effect of starspot correction on atmospheric retrievals", Monthly Notices of the Royal Astronomical Society, 491 (4): 5361–5375, arXiv:1911.05179, Bibcode:2020MNRAS.491.5361B, doi:10.1093/mnras/stz3194, S2CID 207930165
- ^ Vissapragada, Shreyas; Knutson, Heather A.; Jovanovic, Nemanja; Harada, Caleb K.; Oklopčić, Antonija; Eriksen, James; Mawet, Dimitri; Millar-Blanchaer, Maxwell A.; Tinyanont, Samaporn; Vasisht, Gautam (2020), "Constraints on Metastable Helium in the Atmospheres of WASP-69b and WASP-52b with Ultra-Narrowband Photometry", The Astronomical Journal, 159 (6): 278, arXiv:2004.13728, Bibcode:2020AJ....159..278V, doi:10.3847/1538-3881/ab8e34, S2CID 216641813
- ^ Kirk, James; Dos Santos, Leonardo A.; López-Morales, Mercedes; Alam, Munazza K.; Oklopčić, Antonija; MacLeod, Morgan; Zeng, Li; Zhou, George (2022), "Keck/NIRSPEC Studies of He i in the Atmospheres of Two Inflated Hot Gas Giants Orbiting K Dwarfs: WASP-52b and WASP-177b", The Astronomical Journal, 164 (1): 24, arXiv:2205.11579, Bibcode:2022AJ....164...24K, doi:10.3847/1538-3881/ac722f, S2CID 249017929
