SIMBAD references

2017AJ....153...97O - Astron. J., 153, 97-97 (2017/March-0)

KELT-16b: a highly irradiated, ultra-short period hot Jupiter nearing tidal disruption.

OBERST T.E., RODRIGUEZ J.E., COLON K.D., ANGERHAUSEN D., BIERYLA A., NGO H., STEVENS D.J., STASSUN K.G., GAUDI B.S., PEPPER J., PENEV K., MAWET D., LATHAM D.W., HEINTZ T.M., OSEI B.W., COLLINS K.A., KIELKOPF J.F., VISGAITIS T., REED P.A., ESCAMILLA A., YAZDI S., McLEOD K.K., LUNSFORD L.T., SPENCER M., JONER M.D., GREGORIO J., GAILLARD C., MATT K., DUMONT M.T., STEPHENS D.C., COHEN D.H., JENSEN E.L.N., CALCHI NOVATI S., BOZZA V., LABADIE-BARTZ J., SIVERD R.J., LUND M.B., BEATTY T.G., EASTMAN J.D., PENNY M.T., MANNER M., ZAMBELLI R., FULTON B.J., STOCKDALE C., DEPOY D.L., MARSHALL J.L., POGGE R.W., GOULD A., TRUEBLOOD M. and TRUEBLOOD P.

Abstract (from CDS):

We announce the discovery of KELT-16b, a highly irradiated, ultra-short period hot Jupiter transiting the relatively bright (V = 11.7) star TYC 2688-1839-1/KELT-16. A global analysis of the system shows KELT-16 to be an F7V star with Teff=6236±54 K, logg*=4.253–0.036+0.031, [Fe/H]=-0.002–0.085+0.086, M*=1.211–0.046+0.043 M, and R* =1.360–0.053+0.064R. The planet is a relatively high-mass inflated gas giant with MP=2.75–0.15+0.16MJ, RP=1.415–0.067+0.084RJ, density ρP=1.20±0.18 g cm–3, surface gravity log gP=3.530–0.049+0.042, and Teq=2453–47+55 K. The best-fitting linear ephemeris is TC=2457247.24791±0.00019BJDTDB and P=0.9689951±0.0000024 day. KELT-16b joins WASP-18b, -19b, -43b, -103b, and HATS-18b as the only giant transiting planets with P < 1 day. Its ultra-short period and high irradiation make it a benchmark target for atmospheric studies by the Hubble Space Telescope, Spitzer, and eventually the James Webb Space Telescope. For example, as a hotter, higher-mass analog of WASP-43b, KELT-16b may feature an atmospheric temperature-pressure inversion and day-to-night temperature swing extreme enough for TiO to rain out at the terminator. KELT-16b could also join WASP-43b in extending tests of the observed mass-metallicity relation of the solar system gas giants to higher masses. KELT-16b currently orbits at a mere ∼1.7 Roche radii from its host star, and could be tidally disrupted in as little as a few x105 years (for a stellar tidal quality factor of Q*^′=105^). Finally, the likely existence of a widely separated bound stellar companion in the KELT-16 system makes it possible that Kozai-Lidov (KL) oscillations played a role in driving KELT-16b inward to its current precarious orbit.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): planets and satellites: detection - planets and satellites: gaseous planets - methods: observational - techniques: photometric - techniques: radial velocities - techniques: radial velocities

Simbad objects: 11

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2023.01.30-02:25:13

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