KELT-14b AND KELT-15b: AN INDEPENDENT DISCOVERY OF WASP-122b AND A NEW HOT JUPITER
- Department of Physics and Astronomy, Vanderbilt University, 6301 Stevenson Center, Nashville, TN 37235 (United States)
- NASA Ames Research Center, M/S 244-30, Moffett Field, CA 94035 (United States)
- School of Physics, UNSW Australia, 2052 (Australia)
- Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138 (United States)
- Observatoire Astronomique de l’Université de Genève, Chemin des Maillettes 51, 1290 Sauverny (Switzerland)
- Department of Physics, Lehigh University, 16 Memorial Drive East, Bethlehem, PA 18015 (United States)
- South African Astronomical Observatory, P.O. Box 9, Observatory 7935 (South Africa)
- Las Cumbres Observatory Global Telescope Network, 6740 Cortona Dr., Suite 102, Santa Barbara, CA 93117 (United States)
- Department of Astronomy, The Ohio State University, Columbus, OH 43210 (United States)
- Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States)
- Perth Exoplanet Survey Telescope, Perth (Australia)
- American Association of Variable Star Observers, 49 Bay State Rd., Cambridge, MA 02138 (United States)
- IAU Minor Planet Center Observatory Code D79, Vale Park, Adelaide, South Australia (Australia)
- Cerro Tololo InterAmerican Observatory, Casilla 603, La Serena (Chile)
We report the discovery of KELT-14b and KELT-15b, two hot Jupiters from the KELT-South survey. KELT-14b, an independent discovery of the recently announced WASP-122b, is an inflated Jupiter mass planet that orbits a ~5.0{sub -0.7}{sup +0.3} Gyr, V = 11.0, G2 star that is near the main sequence turnoff. The host star, KELT-14 (TYC 7638-981-1), has an inferred mass M{sub ·} = 1.18{sub -0.07}{sup +0.05} M{sub ⊙} and radius R{sub ·} = 1.37±-0.08 R{sub ⊙}, and has T{sub eff} = 5802{sub -92}{sup +95} K, logg{sub ·} = 4.23{sub -0.04}{sup +0.05} and [Fe/H] = 0.33 ± -0.09. The planet orbits with a period of 1.7100588 ± 0.0000025 days (T{sub 0} = 2457091.02863 ± 0.00047) and has a radius R{sub p} = 1.52{sub -0.11}{sup +0.12} R{sub J} and mass M{sub p} = 1.196 ± 0.072 M{sub J}, and the eccentricity is consistent with zero. KELT-15b is another inflated Jupiter mass planet that orbits a ~4.6{sub -0.4}{sup +0.5} Gyr, V = 11.2, G0 star (TYC 8146-86-1) that is near the “blue hook” stage of evolution prior to the Hertzsprung gap, and has an inferred mass M{sub ·} = 1.181{sub -0.050}{sup +0.051} M{sub ⊙} and radius R{sub ·} = 1.48{sub -0.04}{sup +0.09} R{sub ⊙}, and T{sub eff} = 6003{sub -52}{sup +56} K, logg{sub ·} = 4.17{sub -0.04}{sup +0.02} and [Fe/H] = 0.05 ± 0.03. The planet orbits on a period of 3.329441 ± 0.000016 days (T{sub 0} = 2457029.1663 ± 0.0073) and has a radius R{sub p} = 1.443{sub -0.057}{sup +0.11} R{sub J} and mass M{sub p} = 0.91{sub -0.22}{sup +0.21} M{sub J} and an eccentricity consistent with zero. KELT-14b has the second largest expected emission signal in the K-band for known transiting planets brighter than K < 10.5. Both KELT-14b and KELT-15b are predicted to have large enough emission signals that their secondary eclipses should be detectable using ground-based observatories.
- OSTI ID:
- 22862951
- Journal Information:
- The Astronomical Journal (Online), Vol. 151, Issue 6; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1538-3881
- Country of Publication:
- United States
- Language:
- English
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