2018MNRAS.477L..21M

Query : 2018MNRAS.477L..21M

2018MNRAS.477L..21M - Mon. Not. R. Astron. Soc., 477, L21-L24 (2018/June-2)

Pre-discovery transits of the exoplanets WASP-18b and WASP-33b from Hipparcos.

McDONALD I. and KERINS E.

Abstract (from CDS):

We recover transits of WASP-18b and WASP-33b from Hipparcos (1989-1993) photometry. Marginal detections of HAT-P-56b and HAT-P-2b may be also present in the data. New ephemerides are fitted to WASP-18b and WASP-33b. A tentative (∼1.3σ) orbital decay is measured for WASP-18b, but the implied tidal quality factor (Q ∼ 5 x 105) is small and survival time (<106 yr) is too short to be likely. No orbital decay is measured for WASP-33b, and a limit of Q > 2 x 105 is placed. For both planets, the uncertainties in published ephemerides appear underestimated: the uncertainty in the period derivative of WASP-18b would be greatly reduced if its current ephemeris could be better determined.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): planets and satellites: dynamical evolution and stability - planets and satellites: individual: WASP-18b - planets and satellites: individual: WASP-33b - planet-star interactions - stars: variables: d Scuti

Simbad objects: 24

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Number of rows : 24
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 HD 10069 SB* 01 37 25.0332798696 -45 40 40.374717456   9.74 9.30     F6IV/V 230 1
2 HD 10069b Pl 01 37 25.0332798696 -45 40 40.374717456           ~ 369 1
3 HD 15082b Pl 02 26 51.0582618096 +37 33 01.736482032           ~ 337 1
4 HD 15082 EB* 02 26 51.0582618096 +37 33 01.736482032   8.41 8.14     kA5hA8mF4 198 1
5 HD 17156 PM* 02 49 44.4871034544 +71 45 11.629235988   8.78 8.16     F9V 174 2
6 HD 17156b Pl 02 49 44.4871034544 +71 45 11.629235988           ~ 184 1
7 HD 33643b Pl 05 13 10.9289282640 +33 19 05.400733872           ~ 57 0
8 HD 33643 PM* 05 13 10.9289282640 +33 19 05.400733872 9.010 8.97 8.540   8.129 F2 59 0
9 HD 42176b Pl 06 10 39.3452642664 +30 57 25.713412668           ~ 38 1
10 HD 42176 * 06 10 39.3452642664 +30 57 25.713412668   9.23 8.71     F7V 59 1
11 WASP-12b Pl 06 30 32.7966092352 +29 40 20.263502460           ~ 763 1
12 HD 262389b Pl 06 43 23.5326949968 +27 15 08.209166328           ~ 30 0
13 HD 262389 * 06 43 23.5326949968 +27 15 08.209166328   11.35 10.80   9.919 F8 32 0
14 HD 80606 PM* 09 22 37.5768032712 +50 36 13.435326684   9.78 9.00     G8V 330 2
15 HD 80606b Pl 09 22 37.5768032712 +50 36 13.435326684           ~ 328 1
16 Ross 905b Pl 11 42 11.0933350978 +26 42 23.650782778           ~ 810 1
17 Ross 905 PM* 11 42 11.0933350978 +26 42 23.650782778   12.06 10.613 10.272 8.24 M3V 645 1
18 WASP-113 * 14 59 29.4779405208 +46 57 36.477211680   12.464 11.729 11.695   G2 14 0
19 HD 147506b Pl 16 20 36.3576063720 +41 02 53.106772488           ~ 253 1
20 HD 147506 * 16 20 36.3576063720 +41 02 53.106772488   9.15 8.69     F8V 174 2
21 HD 189733 BY* 20 00 43.7129433648 +22 42 39.073143456 9.241 8.578 7.648 7.126 6.68 K2V 896 1
22 HD 189733b Pl 20 00 43.7129433648 +22 42 39.073143456           ~ 1436 1
23 HD 209458b Pl 22 03 10.7727465312 +18 53 03.549393384           ~ 1859 1
24 HD 209458 V* 22 03 10.7727465312 +18 53 03.549393384   8.21 7.63     F9V 1115 1

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