WASP-36

WASP-36 is a yellow main sequence star in the Hydra constellation.

WASP-36
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
Distance1,270 ± 20 ly
(391 ± 5 pc)
Details[1][2]
Mass1.01±0.08 M
Radius0.96+0.020
0.029
 R
Surface gravity (log g)4.49+0.026
0.024
 cgs
Temperature5959±134 K
Metallicity [Fe/H]-0.26±0.10 dex
Rotational velocity (v sin i)3.3±1.2 km/s
Age2.5+3.5
2.2
 Gyr
Other designations
WASP-36, DENIS J084619.3-080136, 2MASS J08461929-0801370, Gaia DR2 5750936092375254016[3]
Database references
SIMBADdata

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]

The WASP-36 planetary system[1][10][2]
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

References

  1. 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.
  2. 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.
  3. WASP-36 -- Star
  4. "Wasp-36b". NASA Exoplanet Exploration. NASA. Retrieved 21 May 2020.
  5. 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.
  6. 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.
  7. WASP-36 b Solar analogue 1.5 day orbital period 2.4 Jupiter masses 1.4 Jupiter radii
  8. 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.
  9. 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.
  10. 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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