2014AJ....147...39C


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.01CEST23:05:41

2014AJ....147...39C - Astron. J., 147, 39 (2014/February-0)

KELT-6b: a P ∼ 7.9 day hot Saturn transiting a metal-poor star with a long-period companion.

COLLINS K.A., EASTMAN J.D., BEATTY T.G., SIVERD R.J., GAUDI B.S., PEPPER J., KIELKOPF J.F., JOHNSON J.A., HOWARD A.W., FISCHER D.A., MANNER M., BIERYLA A., LATHAM D.W., FULTON B.J., GREGORIO J., BUCHHAVE L.A., JENSEN E.L.N., STASSUN K.G., PENEV K., CREPP J.R., HINKLEY S., STREET R.A., CARGILE P., MACK C.E., OBERST T.E., AVRIL R.L., MELLON S.N., McLEOD K.K., PENNY M.T., STEFANIK R.P., BERLIND P., CALKINS M.L., MAO Q., RICHERT A.J.W., DEPOY D.L., ESQUERDO G.A., GOULD A., MARSHALL J.L., OELKERS R.J., POGGE R.W., TRUEBLOOD M. and TRUEBLOOD P.

Abstract (from CDS):

We report the discovery of KELT-6b, a mildly inflated Saturn-mass planet transiting a metal-poor host. The initial transit signal was identified in KELT-North survey data, and the planetary nature of the occulter was established using a combination of follow-up photometry, high-resolution imaging, high-resolution spectroscopy, and precise radial velocity measurements. The fiducial model from a global analysis including constraints from isochrones indicates that the V = 10.38 host star (BD+31 2447) is a mildly evolved, late-F star with Teff= 6102±43 K, log g* = 4.07–0.07+0.04, and [Fe/H] = -0.28±0.04, with an inferred mass M{sstarf}= 1.09±0.04 M and radius R* = 1.58–0.09+0.16R. The planetary companion has mass MP= 0.43±0.05 MJup, radius Rp = 1.19–0.08+0.13Rjup, surface gravity log gp = 2.860.08+0.06, and density ρp 0.31–0.08+0.07g/cm3. The planet is on an orbit with semimajor axis a = 0.079±0.001 AU and eccentricity e = 0.22–0.1+0.12, which is roughly consistent with circular, and has ephemeris of Tc(BJDTDB) = 2456347.79679±0.00036 and P = 7.845631±0.000046 days. Equally plausible fits that employ empirical constraints on the host-star parameters rather than isochrones yield a larger planet mass and radius by ∼4-7. KELT-6b has surface gravity and incident flux similar to HD 209458b, but orbits a host that is more metal poor than HD 209458 by ∼0.3 dex. Thus, the KELT-6 system offers an opportunity to perform a comparative measurement of two similar planets in similar environments around stars of very different metallicities. The precise radial velocity data also reveal an acceleration indicative of a longer-period third body in the system, although the companion is not detected in Keck adaptive optics images.

Abstract Copyright:

Journal keyword(s): instrumentation: adaptive optics - planetary systems - stars: individual (KELT-6, BD+31 2447, TYC 2532-556-1, HD 209458) - techniques: photometric - techniques: spectroscopic

Status at CDS:  

Simbad objects: 41

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Number of rows : 41

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 KELT-1b LM* 00 01 26.9222 +39 23 01.675           ~ 58 1
2 HAT-P-16b Pl 00 38 17.5584478065 +42 27 47.216927539           ~ 39 1
3 WASP-18b Pl 01 37 25.0335097438 -45 40 40.376513381           ~ 199 1
4 WASP-77Ab Pl 02 28 37.2275829401 -07 03 38.378689023           ~ 20 1
5 XO-3b Pl 04 21 52.7044170433 +57 49 01.892074012           ~ 170 1
6 HAT-P-15b Pl 04 24 59.5347962291 +39 27 38.312403582           ~ 38 1
7 WASP-79b Pl 04 25 29.0168304676 -30 36 01.610961515           ~ 37 1
8 WASP-35b Pl 05 04 19.6324126613 -06 13 47.376129317           ~ 19 1
9 WASP-62b Pl 05 48 33.5937810570 -63 59 18.386834103           ~ 23 1
10 HD 42176b Pl 06 10 39.3452456624 +30 57 25.717178081           ~ 20 1
11 XO-4b Pl 07 21 33.1602110129 +58 16 05.111704885           ~ 49 1
12 HAT-P-30b Pl 08 15 47.9805310385 +05 50 12.352063199           ~ 30 1
13 HAT-P-13b Pl 08 39 31.8073600797 +47 21 07.275628863           ~ 84 1
14 WASP-84b Pl? 08 44 25.7032891140 +01 51 36.106556176           ~ 13 0
15 * rho01 Cnc e Pl 08 52 35.81093 +28 19 50.9511           ~ 379 1
16 WASP-13b Pl 09 20 24.7143829845 +33 52 56.699778302           ~ 48 1
17 KELT-3b Pl 09 54 34.3870731862 +40 23 16.978979299           ~ 19 1
18 HD 233731b Pl 10 22 43.5924378707 +50 07 42.063457528           ~ 25 1
19 WASP-34b Pl 11 01 35.8978900078 -23 51 38.384687448           ~ 30 1
20 HD 97658b Pl 11 14 33.1613362847 +25 42 37.391912066           ~ 126 1
21 BD+31 2447 * 13 03 55.6468217350 +30 38 24.279744375   10.837 10.337   9.745 F8 24 1
22 BD+31 2447b Pl 13 03 55.6468217350 +30 38 24.279744375           ~ 22 1
23 BD+22 2716b Pl 14 33 06.3573673505 +21 53 40.982782397           ~ 117 1
24 WASP-38b Pl 16 15 50.3652643210 +10 01 57.284401784           ~ 35 1
25 HD 147506b Pl 16 20 36.3579144486 +41 02 53.109043943           ~ 208 1
26 HD 149026b Pl 16 30 29.6184841164 +38 20 50.310893575           ~ 292 1
27 HAT-P-14b Pl 17 20 27.8782981532 +38 14 31.909663582           ~ 50 1
28 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11312 0
29 WASP-3b Pl 18 34 31.6255913635 +35 39 41.489193276           ~ 97 1
30 KOI-2.01 Pl 19 28 59.3538131541 +47 58 10.216250846           ~ 258 1
31 HD 189733b Pl 20 00 43.7130382888 +22 42 39.071811263           ~ 1047 1
32 HAT-P-34b Pl 20 12 46.8867073562 +18 06 17.399935067           ~ 25 1
33 HD 197286b Pl 20 44 10.2207500229 -39 13 30.859306335           ~ 48 1
34 HAT-P-17b Pl 21 38 08.7311406378 +30 29 19.445574063           ~ 50 1
35 HD 209458b Pl 22 03 10.7729598762 +18 53 03.548248479           ~ 1439 1
36 V* V376 Peg EP* 22 03 10.7729598762 +18 53 03.548248479   8.21 7.63     F9V 985 1
37 HAT-P-8b Pl 22 52 09.8635559135 +35 26 49.606963112           ~ 61 1
38 HAT-P-1b Pl 22 57 46.8443014981 +38 40 30.355384717           ~ 193 1
39 WASP-59b Pl 23 18 29.54 +24 53 21.4           ~ 24 1
40 HAT-P-6b Pl 23 39 05.8101319829 +42 27 57.503480354           ~ 66 1
41 NAME CD-35 16019Ab Pl 23 59 36.0711854449 -35 01 52.923483315           ~ 90 0

    Equat.    Gal    SGal    Ecl

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2020.04.01-23:05:41

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