2016AJ....152..127P


Query : 2016AJ....152..127P

2016AJ....152..127P - Astron. J., 152, 127-127 (2016/November-0)

HATS-18b: an extreme short-period massive transiting planet spinning up its star.

PENEV K., HARTMAN J.D., BAKOS G.A., CICERI S., BRAHM R., BAYLISS D., BENTO J., JORDAN A., CSUBRY Z., BHATTI W., DE VAL-BORRO M., ESPINOZA N., ZHOU G., MANCINI L., RABUS M., SUC V., HENNING T., SCHMIDT B., NOYES R.W., LAZAR J., PAPP I. and SARI P.

Abstract (from CDS):

We report the discovery by the HATSouth network of HATS-18b: a 1.980±0.077MJ, 1.337–0.049+0.102RJ planet in a 0.8378 day orbit, around a solar analog star (mass 1.037±0.047M and radius 1.020–0.031+0.057R) with V=14.067±0.040 mag. The high planet mass, combined with its short orbital period, implies strong tidal coupling between the planetary orbit and the star. In fact, given its inferred age, HATS-18 shows evidence of significant tidal spin up, which together with WASP-19 (a very similar system) allows us to constrain the tidal quality factor for Sun-like stars to be in the range of 6.5\lesssimlog10(Q*/k2)\lesssim7 even after allowing for extremely pessimistic model uncertainties. In addition, the HATS-18 system is among the best systems (and often the best system) for testing a multitude of star-planet interactions, be they gravitational, magnetic, or radiative, as well as planet formation and migration theories.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): planetary systems - planets and satellites: detection - planets and satellites: gaseous planets - stars: individual: HATS-18 - stars: rotation - techniques: photometric - techniques: photometric

VizieR on-line data: <Available at CDS (J/AJ/152/127): table1.dat table2.dat>

Simbad objects: 19

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Number of rows : 19
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 KELT-1 * 00 01 26.9168207928 +39 23 01.784206464   11.23 10.63     ~ 44 0
2 HD 10069 * 01 37 25.0332798696 -45 40 40.374717456   9.74 9.30     F6IV/V 190 1
3 HD 15082 dS* 02 26 51.0582618096 +37 33 01.736482032   8.41 8.14     kA5hA8mF4 172 1
4 Cl Melotte 22 OpC 03 46 24 +24 06.8           ~ 3226 0
5 Cl Melotte 25 OpC 04 29 47 +16 56.9           ~ 2883 0
6 M 37 OpC 05 52 18 +32 32.7   6.19 5.6     ~ 361 2
7 WASP-12 ** 06 30 32.7966092352 +29 40 20.263502460   12.14 11.57     G0V 274 2
8 WASP-12b Pl 06 30 32.7966788910 +29 40 20.266334158           G0 682 1
9 HD 50064 Em* 06 51 34.1059967736 +00 17 50.466003216 8.75 9.06 8.30 7.51 6.88 B6Ie 83 1
10 NGC 2323 OpC 07 02 47.5 -08 20 16           ~ 178 0
11 NGC 2632 OpC 08 40 13 +19 37.3           ~ 1418 0
12 NGC 2682 OpC 08 51 23 +11 48.8           ~ 2202 0
13 WASP-19 V* 09 53 40.0765648584 -45 39 33.057187596   13.05 12.31 12.12 11.35 G8V 159 2
14 WASP-43 PM* 10 19 38.0088913464 -09 48 22.605801336   13.4 12.4 12.08 11.10 K7V 118 1
15 OGLE-TR 113 SB* 10 52 24.2810533560 -61 26 48.845675976     16.08 15.41 14.42 K 115 1
16 HATS-18b Pl 11 35 49.7771099628 -29 09 21.753959414           ~ 28 0
17 HATS-18 * 11 35 49.7771406312 -29 09 21.755012652   14.870 14.067     ~ 24 0
18 WASP-103 * 16 37 15.5765824488 +07 11 00.109678740     12.1     F8V 58 1
19 OGLE-TR 56 EB* 17 56 35.5016678064 -29 32 21.479240220     16.560 16.07 15.30 ~ 165 1

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2022.09.25-00:20:05

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