KELT-14b and KELT-15b: an independent discovery of WASP-122b and a new hot Jupiter

Rodriguez, Joseph E. and Colon, Knicole D. and Stassun, Keivan G. and Wright, Duncan and Cargile, Phillip A. and Bayliss, Daniel and Pepper, Joshua and Collins, Karen A. and Kuhn, Rudolf B. and Lund, Michael B. and Siverd, Robert J. and Zhou, George and Gaudi, B. Scott and Tinney, C. G. and Penev, Kaloyan and Tan, T. G. and Stockdale, Chris and Curtis, Ivan A. and James, David and Udry, Stephane and Segransan, Damien and Bieryla, Allyson and Latham, David W. and Beatty, Thomas G. and Eastman, Jason D. and Myers, Gordon and Bartz, Jonathan and Bento, Joao and Jensen, Eric L. N. and Oberst, Thomas E. and Stevens, Daniel J. (2016) KELT-14b and KELT-15b: an independent discovery of WASP-122b and a new hot Jupiter. The Astronomical Journal, 151 (6 - Article 138). pp. 1-16. ISSN 0004-6256

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Abstract

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 similar to 5.0(-0.7)(+0.3) (0)7 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* = 1.18(-0.7)(+0.3) M-circle dot and radius R* = 1.37 +/- -0.08 R-circle dot), and has T-eff = 58021 K, log g* = 4.23(-0.7)(+0.3) SI and [Fe/H] = 0.33 +/- -0.09. The planet orbits with a period of 1.7100588 +/- 0.0000025 days (T-0 = 2457091.02863 +/- 0.00047) and has a radius R-p = 1.521 Ri and mass Mp = 1.196 +/- 0.072 MI, and the eccentricity is consistent with zero. KELT-15b is another inflated Jupiter mass planet that orbits a similar to 4.6(-0.4)(+0.5) Gyr, V = 11.2, GO 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* = 1.181(0.050)(+0.05) M-circle dot and radius R* = 1.481 R-circle dot, and T-eff = 6003-% K, log g* = 4.17(-0.04)(+0.02) and [Fe/H] = 0.05 +/- 0.03. The planet orbits on a period of 3.329441 +/- 0.000016 days (T0 = 2457029.1663 0.0073) and has a radius Rp = 1.443 (o)Ols7 Ri and mass M-p = 0.91 531 MI 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.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version deposited in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 09 Sep 2019 00:01
Last Modified: 10 Sep 2019 02:56
Uncontrolled Keywords: planetary systems, stars individual KELT-14, KELT-15, techniques photometric, techniques radial velocities techniques, spectroscopic
Fields of Research : 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
Identification Number or DOI: 10.3847/0004-6256/151/6/138
URI: http://eprints.usq.edu.au/id/eprint/36382

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