Astronomy:HAT-P-36
HAT-P-36, also referred to as Tuiren[1] is a 12th magnitude G-type main-sequence star estimated to be approximately 958 light-years away from Earth[2] in the constellation Canes Venatici. HAT-P-36 is too faint to be seen with the naked eye, but it is possible to view it with binoculars or a small telescope. In 2012 a hot Jupiter-type exoplanet was discovered orbiting HAT-P-36 with an orbital period of about 1.3 Earth days.[3] In December 2019, HAT-P-36 was named Tuiren and its planetary companion, HAT-P-36b, was named Bran as a result of Ireland's contribution to the 2019 NameExoWorlds campaign.[4] Bran has a mass approximately 1.8 times that of Jupiter and a radius 1.2 times larger.
Etymology
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HAT-P-36 and its planet are named after characters from The Birth of Bran, a story in the book Irish Fairy Tales by James Stephens. The book is a re-telling of various stories from Irish folklore. Tuiren was the aunt of the mythical hero Fionn mac Cumhaill and was turned into a hound by the fairy Uchtdealbh after Tuiren married her husband. Bran and Sceólan were the two puppies mothered by Tuiren while she was a dog. They were cousins of Fionn mac Cumhaill. The names were proposed by John Murphy, a teacher at Regina Mundi College, Cork.[6]
Planetary system
HAT-P-36b (Bran) was discovered in 2012 by the HATNet Project using the transit method.[3] A search for transit timing variation did not result in detection of additional planets in the system as at 2021.[7] Surprisingly, a planetary orbital period increase by 0.014 seconds per year was detected by 2021.[8]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b (Bran) | 1.832 MJ | 0.02366±0.00016 | 1.327346977(49) | 0 | 86.76±0.076° | 1.233±0.025 RJ |
| Jupiter | HAT-P-36b (Bran) |
|---|---|
|
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References
- ↑ "IAU100 NameExoWorlds Approved Names". International Astronomical Union. https://0bf71ea7-eb0b-44fe-ba3a-7895e80dc750.filesusr.com/ugd/6358ac_5eebee4eba4f41b7a9f6201123673a24.pdf. Retrieved 24 July 2020.
- ↑ Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 3.0 3.1 "HAT-P-36". http://www.openexoplanetcatalogue.com/planet/HAT-P-36%20b/. Retrieved 24 July 2020.
- ↑ Smith, Niall (29 September 2019). "Sky Matters: Ireland has the chance to name a star and a planet - any ideas?". Irish Examiner. https://www.irishexaminer.com/lifestyle/arid-30953790.html. Retrieved 24 July 2020.
- ↑ "TYC 3020-2195-1". SIMBAD. http://simbad.u-strasbg.fr/simbad/sim-id?Ident=TYC+3020-2195-1. Retrieved 24 July 2020.
- ↑ Gorey, Colm (18 December 2019). "Cork teacher names exoplanet and star after Irish mythical dogs". Silicon Republic. https://www.siliconrepublic.com/innovation/cork-teacher-exoplanet-star-irish-mythical-dogs. Retrieved 24 July 2020.
- ↑ 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. doi:10.1093/mnras/stab3270.
- ↑ Yalçınkaya, S.; Baştürk, Ö.; ElHelweh, F.; Esmer, E.M.; Yörükoğlu, O.; Yılmaz, M.; Şenavcı, H.V.; Kılıçoğlu, T. et al. (2021). "Analysis of the Most Precise Light Curves of HAT-P-36 Detrended from Spot Signals". Acta Astronomica 71 (3): 223. doi:10.32023/0001-5237/71.3.3. Bibcode: 2021AcA....71..223Y.
- ↑ Wang, Weilong; Gu, Shenghong; Wang, Xiaobin; Sun, Leilei; Lee, Byeong-Cheol; Kwok, Chi-Tai; Hui, Ho-Keung; Dou, Jiangpei et al. (June 2025). "Observations and Studies on the Transiting Systems HAT-P-36, XO-2 and WASP-76" (in en). The Astronomical Journal 169 (6): 342. doi:10.3847/1538-3881/add1de. ISSN 0004-6256. Bibcode: 2025AJ....169..342W.
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