| Submission declined on 15 April 2024 by AngusWOOF (talk). The proposed article does not have sufficient content to require an article of its own, but it could be merged into the existing article at WASP-49. Since anyone can edit Wikipedia, you are welcome to add that information yourself. Thank you.
Where to get help
How to improve a draft
You can also browse Wikipedia:Featured articles and Wikipedia:Good articles to find examples of Wikipedia's best writing on topics similar to your proposed article. Improving your odds of a speedy review To improve your odds of a faster review, tag your draft with relevant WikiProject tags using the button below. This will let reviewers know a new draft has been submitted in their area of interest. For instance, if you wrote about a female astronomer, you would want to add the Biography, Astronomy, and Women scientists tags. Editor resources
|  |
Comment: this is already covered by the WASP-49 article. Please issue a split request and discussion if you feel it is independently notable from that. AngusW🐶🐶F (bark • sniff) 18:00, 15 April 2024 (UTC)
| Discovery | |
|---|---|
| Discovery date | 2012 |
| Orbital characteristics | |
| 0.0379+0.0010 −0.0011 AU | |
| Eccentricity | <0.026 |
| 2.781 d | |
| Inclination | 84.89±0.19 |
| Physical characteristics | |
Mean radius | 1.115±0.047 |
| Mass | 0.399+0.029 −0.027 |
| Temperature | 1369±39 K |
WASP-49b is a hot-Jupiter exoplanet orbiting the Sun-like star WASP-49 A. It is about 40% the mass of Jupiter and has an equilibrium temperature of 1369±39 K.[1] The planet was discovered to be surrounded by a sodium envelope, which could indicate the presence of a potential exomoon.[2]
Characteristics edit
WASP-49b was found to possess an extensive sodium envelope in 2017.[2] Additionally, the Hubble Space Telescope found clear absorption features in near-UV light, indicating the presence of magnesium and iron. These metals may not be gravitationally bound to the planet, but could be magnetically confined to it.[3] WASP-49b has an equilibrium temperature of 1369±39 K, making it a hot-Jupiter or hot-Saturn planet.
Potential exomoon edit
The existence of a sodium envelope around WASP-49b could be explained by the presence of a volcanically active, Io-like exomoon.[4] However, this idea remains speculative. Additionally, 3 sodium "booms" were detected over a period of 40 minutes each, as well as Doppler-shifts of the planet indicative of a third body orbiting WASP-49b with a period of 8 hours, near the planet's Roche limit.[5]
References edit
- ^ Lendl, M.; Anderson, D. R.; Collier-Cameron, A.; Doyle, A. P.; Gillon, M.; Hellier, C.; Jehin, E.; Lister, T. A.; Maxted, P. F. L.; Pepe, F.; Pollacco, D.; Queloz, D.; Smalley, B.; Segransan, D.; Smith, A. M. S. (August 2012). "WASP-42 b and WASP-49 b: two new transiting sub-Jupiters". Astronomy & Astrophysics. 544: A72. arXiv:1205.2757. Bibcode:2012A&A...544A..72L. doi:10.1051/0004-6361/201219585. ISSN 0004-6361.
- ^ a b Wyttenbach, A.; Lovis, C.; Ehrenreich, D.; Bourrier, V.; Pino, L.; Allart, R.; Astudillo-Defru, N.; Cegla, H. M.; Heng, K.; Lavie, B.; Melo, C.; Murgas, F.; Santerne, A.; Ségransan, D.; Udry, S. (June 2017). "Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS) I. Detection of hot neutral sodium at high altitudes on WASP-49b". Astronomy & Astrophysics. 602: A36. arXiv:1702.00448. Bibcode:2017A&A...602A..36W. doi:10.1051/0004-6361/201630063. ISSN 0004-6361.
- ^ Sing, David K.; Lavvas, Panayotis; Ballester, Gilda E.; Etangs, Alain Lecavelier des; Marley, Mark S.; Nikolov, Nikolay; Ben-Jaffel, Lotfi; Bourrier, Vincent; Buchhave, Lars A.; Deming, Drake L.; Ehrenreich, David; Mikal-Evans, Thomas; Kataria, Tiffany; Lewis, Nikole K.; Lopez-Morales, Mercedes (2019-08-01). "The HST PanCET Program: Exospheric Mg II and Fe II in the Near-UV transmission spectrum of WASP-121b using Jitter Decorrelation". The Astronomical Journal. 158 (2): 91. arXiv:1908.00619. doi:10.3847/1538-3881/ab2986. ISSN 0004-6256.
- ^ 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 (2019-11-10). "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. ISSN 0004-637X.
- ^ "PARALLEL SESSIONS - Exoplanets 5". 2024-03-11. Retrieved 2024-04-15.