WASP-36
WASP-36 is a yellow main sequence star in the Hydra constellation.
| Observation data Epoch J2000 Equinox | |
|---|---|
| Constellation | Hydra |
| Right ascension | 08h 46m 19.2978s |
| Declination | −08° 01′ 37.0127″ |
| Apparent magnitude (V) | 12.7 |
| Characteristics | |
| Evolutionary stage | main sequence star |
| Spectral type | G2V |
| B−V color index | 0.4 |
| J−H color index | 0.256 |
| J−K color index | 0.315 |
| Astrometry | |
| Radial velocity (Rv) | -13.2169±0.0024 km/s |
| Proper motion (μ) | RA: -4.077±0.053 mas/yr Dec.: -8.710±0.041 mas/yr |
| Parallax (π) | 2.5599 ± 0.0345 mas |
| Distance | 1,270 ± 20 ly (391 ± 5 pc) |
| Details[1][2] | |
| Mass | 1.01±0.08 M☉ |
| Radius | 0.96+0.020 −0.029 R☉ |
| Surface gravity (log g) | 4.49+0.026 −0.024 cgs |
| Temperature | 5959±134 K |
| Metallicity [Fe/H] | -0.26±0.10 dex |
| Rotational velocity (v sin i) | 3.3±1.2 km/s |
| Age | 2.5+3.5 −2.2 Gyr |
| Other designations | |
WASP-36, DENIS J084619.3-080136, 2MASS J08461929-0801370, Gaia DR2 5750936092375254016[3] | |
| Database references | |
| SIMBAD | data |
Star characteristics
WASP-36 is a yellow main sequence star of spectral class G2, similar to the Sun.[4] It has an unconfirmed stellar companion with apparent magnitude 14.03.[5][6]
Planetary system
In 2010, the SuperWASP survey found the Hot Jupiter class planet WASP-36b using the transit method.[7] Its temperature was measured to be 1705±44 K.[8] The planetary transmission spectrum taken in 2016 has turned out to be anomalous: the planet appears to be surrounded by a blue-tinted halo that is too wide to be an atmosphere and may represent a measurement error.[9]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 2.295±0.058 MJ | 0.02643±0.00026 | 1.5373639±0.0000014 | 0.004+0.006 −0.005 |
83.62+0.3 −0.26° |
1.33+0.030 −0.029 RJ |
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References
- Smith, A. M. S.; Anderson, D. R.; Collier Cameron, A.; Gillon, M.; Hellier, C.; Lendl, M.; Maxted, P. F. L.; Queloz, D.; Smalley, B.; Triaud, A. H. M. J.; West, R. G.; Barros, S. C. C.; Jehin, E.; Pepe, F.; Pollacco, D.; Segransan, D.; Southworth, J.; Street, R. A.; Udry, S. (2012). "WASP-36b: A NEW TRANSITING PLANET AROUND a METAL-POOR G-DWARF, AND AN INVESTIGATION INTO ANALYSES BASED ON a SINGLE TRANSIT LIGHT CURVE". The Astronomical Journal. 143 (4): 81. arXiv:1110.5313. Bibcode:2012AJ....143...81S. doi:10.1088/0004-6256/143/4/81.
- Maciejewski, G.; Dimitrov, D.; Mancini, L.; Southworth, J.; Ciceri, S.; D'Ago, G.; Bruni, I.; Raetz, St.; Nowak, G.; Ohlert, J.; Puchalski, D.; Saral, G.; Derman, E.; Petrucci, R.; Jofre, E.; Seeliger, M.; Henning, T. (2016). "New transit observations for HAT-P-30 b, HAT-P-37 b, TrES-5 b, WASP-28 b, WASP-36 b, and WASP-39 B". Acta Astronomica. 66 (1): 55. arXiv:1603.03268. Bibcode:2016AcA....66...55M.
- WASP-36 -- Star
- "Wasp-36b". NASA Exoplanet Exploration. NASA. Retrieved 21 May 2020.
- Ngo, Henry; Knutson, Heather A.; Hinkley, Sasha; Bryan, Marta; Crepp, Justin R.; Batygin, Konstantin; Crossfield, Ian; Hansen, Brad; Howard, Andrew W.; Johnson, John A.; Mawet, Dimitri; Morton, Timothy D.; Muirhead, Philip S.; Wang, Ji (2016). "FRIENDS OF HOT JUPITERS. IV. STELLAR COMPANIONS BEYOND 50 au MIGHT FACILITATE GIANT PLANET FORMATION, BUT MOST ARE UNLIKELY TO CAUSE KOZAI–LIDOV MIGRATION". The Astrophysical Journal. 827 (1): 8. arXiv:1606.07102. Bibcode:2016ApJ...827....8N. doi:10.3847/0004-637X/827/1/8.
- Evans, D. F.; Southworth, J.; Maxted, P. F. L.; Skottfelt, J.; Hundertmark, M.; Jørgensen, U. G.; Dominik, M.; Alsubai, K. A.; Andersen, M. I.; Bozza, V.; Bramich, D. M.; Burgdorf, M. J.; Ciceri, S.; d'Ago, G.; Figuera Jaimes, R.; Gu, S.-H.; Haugbølle, T.; Hinse, T. C.; Juncher, D.; Kains, N.; Kerins, E.; Korhonen, H.; Kuffmeier, M.; Mancini, L.; Peixinho, N.; Popovas, A.; Rabus, M.; Rahvar, S.; Schmidt, R. W.; et al. (2016). "High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP)". Astronomy & Astrophysics. 589: A58. arXiv:1603.03274. doi:10.1051/0004-6361/201527970.
- WASP-36 b Solar analogue 1.5 day orbital period 2.4 Jupiter masses 1.4 Jupiter radii
- Garhart, Emily; Deming, Drake; Mandell, Avi; Knutson, Heather A.; Wallack, Nicole; Burrows, Adam; Fortney, Jonathan J.; Hood, Callie; Seay, Christopher; Sing, David K.; Benneke, Björn; Fraine, Jonathan D.; Kataria, Tiffany; Lewis, Nikole; Madhusudhan, Nikku; McCullough, Peter; Stevenson, Kevin B.; Wakeford, Hannah (2020). "Statistical Characterization of Hot Jupiter Atmospheres Using Spitzer's Secondary Eclipses". The Astronomical Journal. 159 (4): 137. arXiv:1901.07040. Bibcode:2020AJ....159..137G. doi:10.3847/1538-3881/ab6cff.
- Mancini, L.; Kemmer, J.; Southworth, J.; Bott, K.; Mollière, P.; Ciceri, S.; Chen, G.; Henning, Th. (2016). "An optical transmission spectrum of the giant planet WASP-36 b". Monthly Notices of the Royal Astronomical Society. 459 (2): 1393–1402. arXiv:1603.08031. Bibcode:2016MNRAS.459.1393M. doi:10.1093/mnras/stw659.
- Zhou, G.; Bayliss, D. D. R.; Kedziora-Chudczer, L.; Tinney, C. G.; Bailey, J.; Salter, G.; Rodriguez, J. (2015). "Secondary eclipse observations for seven hot-Jupiters from the Anglo-Australian Telescope". Monthly Notices of the Royal Astronomical Society. 454 (3): 3002–3019. arXiv:1509.04147. Bibcode:2015MNRAS.454.3002Z. doi:10.1093/mnras/stv2138.
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