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KELT-3b

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Exoplanet orbiting KELT-3
KELT-3b
KELT-3b compared to JupiterKELT-3b compared to Jupiter
Discovery
Discovered byPepper et al. 2013
Discovery date2013
Detection methodTransit
Orbital characteristics
Semi-major axis0.04120 ± 0.00067AU
Eccentricity0.202
Orbital period (sidereal)2.7033902 d
Inclination84.25+0.67
−0.64°
StarKELT-3
Physical characteristics
Mean radius1.56±0.11RJ
Mass1.94±0.33MJ
Temperature2132±133

KELT-3b is an extrasolar planet orbiting the F-type main-sequence star KELT-3 690 light years in the zodiac constellation Leo. It was discovered in 2013 by KELT's telescope in Arizona.

Properties

This planet has 44% more mass than Jupiter, but has expanded to 1.34 times the radius of the latter. It has a temperature of 1,811 K, which gives it a Hot Jupiter class. KELT-3b has a lower density than Jupiter, and completes a revolution in less in 3 days. This corresponds with an orbital distance of 0.04 AU, which is 10 times closer than Mercury (planet) orbits the Sun.

The planetary equilibrium temperature is 1829±42 K, but measured temperature is hotter at 2132±133 K. The radiation of the moderately active host star KELT-3 do not produce a detectable ionization and consequent Lyman-alpha line emission in the atmosphere of the KELT-3b.

Discovery

KELT-3b was discovered in 2013. The light curves and parameters of both the planet and the star were observed. The paper also states that there is uncertainty about the system’s age.

References

  1. ^ Pepper, Joshua; Siverd, Robert J.; Beatty, Thomas G.; Gaudi, B. Scott; Stassun, Keivan G.; Eastman, Jason; Collins, Karen; Latham, David W.; Bieryla, Allyson; Buchhave, Lars A.; Jensen, Eric L. N. (2013-08-01). "KELT-3b: A Hot Jupiter Transiting a V = 9.8 Late-F Star". The Astrophysical Journal. 773 (1): 64. arXiv:1211.1031. Bibcode:2013ApJ...773...64P. doi:10.1088/0004-637X/773/1/64. ISSN 0004-637X. S2CID 14691090.
  2. ^ Stassun, Keivan G.; Collins, Karen A.; Gaudi, B. Scott (2017-03-01). "Accurate Empirical Radii and Masses of Planets and Their Host Stars with Gaia Parallaxes". The Astronomical Journal. 153 (3): 136. arXiv:1609.04389. Bibcode:2017AJ....153..136S. doi:10.3847/1538-3881/aa5df3. ISSN 0004-6256. S2CID 119219062.
  3. ^ 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 (2020-04-01). "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. hdl:1983/cfa40930-a3fa-477f-abd9-c4937e03fdae. ISSN 0004-6256. S2CID 119209434.
  4. Alavi, S. A.; Rezaei, N. (2017-05-01). "Dirac equation, hydrogen atom spectrum and the Lamb shift in dynamical non-commutative spaces". Pramana. 88 (5): 77. arXiv:1612.05942. Bibcode:2017Prama..88...77A. doi:10.1007/s12043-017-1381-4. ISSN 0304-4289. S2CID 119588205.
2013 in space
Space probe launches Space probes launched in 2013
Space probes
Space observatories
  • IRIS (solar observation; Jun 2013)
  • Hisaki (ultraviolet observation; Sep 2013)
  • Gaia (astrometric observation; Dec 2013)


Impact events
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Exoplanets Exoplanets discovered in 2013
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