TOI-1452 b is a confirmed super-Earth exoplanet, possibly a water world, orbiting a red-dwarf star TOI-1452 about 100 light-years away in the Draco constellation.[2][3] The exoplanet is about 70% larger in diameter than Earth, and roughly five times as massive.[4]
| Discovery | |
|---|---|
| Discovered by | Cadieux, Charles et al.; International Team[1] |
| Discovery site | Université de Montréal[1] |
| Discovery date | June 2022[1] |
| Orbital characteristics | |
| 0.061±0.003 AU | |
| Eccentricity | 0 |
| 11 days | |
| Inclination | 89.77°±0.16° |
| 90 | |
| Star | TOI-1452 |
| Physical characteristics[1] | |
| 1.67±0.07 R🜨 | |
| Mass | 4.82±1.3 ME |
Mean density | 5.6+1.8 −1.6 g/cm3 |
| Temperature | 326±7 K |
System
editThe TOI-1452 star system is 99 light-years away from Earth,[5] located in the constellation of Draco. It is a binary pair of dim red dwarf stars separated by only 96 astronomical units (AU). A notable feature of this system is the presence of an exoplanet around one of the stars, designated as TOI-1452 b.[6] It is two M4 dwarf stars that were observed by TESS as a priority, since they are on the cool dwarf list, a list of high-priority orange-red and red dwarf stars, that was uploaded to TESS. It is a flare star, with a flare observed by TESS where the star brightened by 5%. The secondary star is often distinguished from the first with the name "TOI-1760".[7]
Discovery
editTOI-1452 b was discovered by an international team led by astronomers from the Université de Montréal,[8][9] using data from NASA’s Transiting Exoplanet Survey Satellite (TESS).[1][10] The discovery was first reported in June 2022.[1]
References
edit- ^ a b c d e f Cadieux, Charles; Doyon, René; et al. (June 27, 2022). "TOI-1452 b: SPIRou and TESS Reveal a Super-Earth in a Temperate Orbit Transiting an M4 Dwarf". The Astronomical Journal. 164:96 (3). American Astronomical Society (published August 12, 2022): 28pp. arXiv:2208.06333. Bibcode:2022AJ....164...96C. doi:10.3847/1538-3881/ac7cea.
- ^ Program, By Pat Brennan, NASA's Exoplanet Exploration. "Discovery Alert: Intriguing New 'Super-Earth' Could Get a Closer Look". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved August 27, 2022.
{{cite web}}: CS1 maint: multiple names: authors list (link) - ^ "The Extrasolar Planet Encyclopaedia — TOI-1452 b". Extrasolar Planets Encyclopaedia. Retrieved August 27, 2022.
- ^ Cowing, Keith (August 24, 2022). "TOI-1452 b: An Extrasolar World Covered In Water?". Astrobiology. Retrieved August 27, 2022.
- ^ "TOI-1452 Star Information". Stellar Catalog. Retrieved September 14, 2023.
- ^ "Discovery of Ocean World with the CFHT". Canada-France-Hawaii Telescope. Retrieved September 14, 2023.
- ^ Cadieux, Charles; Doyon, René; Plotnykov, Mykhaylo; Hébrard, Guillaume; Jahandar, Farbod; Artigau, Étienne; Valencia, Diana; Cook, Neil J.; Martioli, Eder; Vandal, Thomas; Donati, Jean-François; Cloutier, Ryan; Narita, Norio; Fukui, Akihiko; Hirano, Teruyuki (August 12, 2022). "TOI-1452 b: SPIRou and TESS Reveal a Super-Earth in a Temperate Orbit Transiting an M4 Dwarf". The Astronomical Journal. 164 (3): 96. arXiv:2208.06333. doi:10.3847/1538-3881/ac7cea. ISSN 0004-6256.
- ^ DePresse, Salle (August 24, 2022). "An extrasolar world covered in water?". Université de Montréal. Retrieved September 2, 2022.
- ^ Brennan, Pat (August 24, 2022). "Discovery Alert: Intriguing New 'Super-Earth' Could Get a Closer Look". NASA. Retrieved September 3, 2022.
- ^ Anderson, Natali (August 24, 2022). "Water-World Super-Earth Found in Nearby Binary System | Sci.News". Sci.News: Breaking Science News. Retrieved August 27, 2022.
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