SIMBAD references

2015AJ....150...12B - Astron. J., 150, 12 (2015/July-0)

KELT-7b: a hot Jupiter transiting a bright V = 8.54 rapidly rotating F-star.

BIERYLA A., COLLINS K., BEATTY T.G., EASTMAN J., SIVERD R.J., PEPPER J., GAUDI B.S., STASSUN K.G., CANAS C., LATHAM D.W., BUCHHAVE L.A., SANCHIS-OJEDA R., WINN J.N., JENSEN E.L.N., KIELKOPF J.F., McLEOD K.K., GREGORIO J., COLON K.D., STREET R., ROSS R., PENNY M., MELLON S.N., OBERST T.E., FULTON B.J., WANG J., BERLIND P., CALKINS M.L., ESQUERDO G.A., DEPOY D.L., GOULD A., MARSHALL J., POGGE R., TRUEBLOOD M. and TRUEBLOOD P.

Abstract (from CDS):

We report the discovery of KELT-7b, a transiting hot Jupiter with a mass of 1.28 ± 0.18 MJ, radius of 1.533–0.047+0.046 RJ, and an orbital period of 2.7347749± 0.00000039 days. The bright host star (HD 33643; KELT-7) is an F-star with V = 8.54, Teff= 6789–49+50 K, [Fe/H] = 0.139–0.081+0.075, and log g = 4.149 ± 0.019. It has a mass of 1.535–0.054+0.066 M, a radius of 1.732–0.045+0.043 R, and is the fifth most massive, fifth hottest, and the ninth brightest star known to host a transiting planet. It is also the brightest star around which Kilodegree Extremely Little Telescope (KELT) has discovered a transiting planet. Thus, KELT-7b is an ideal target for detailed characterization given its relatively low surface gravity, high equilibrium temperature, and bright host star. The rapid rotation of the star (73± 0.5 km/s) results in a Rossiter-McLaughlin effect with an unusually large amplitude of several hundred m/s. We find that the orbit normal of the planet is likely to be well-aligned with the stellar spin axis, with a projected spin-orbit alignment of λ = 9.°7±5.°2. This is currently the second most rapidly rotating star to have a reflex signal (and thus mass determination) due to a planetary companion measured.

Abstract Copyright:

Journal keyword(s): planetary systems - stars: individual: KELT - techniques: photometric - techniques: spectroscopic

VizieR on-line data: <Available at CDS (J/AJ/150/12): table1.dat>

Simbad objects: 11

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2021.01.26-01:03:15

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