2019MNRAS.490.1294B


Query : 2019MNRAS.490.1294B

2019MNRAS.490.1294B - Mon. Not. R. Astron. Soc., 490, 1294-1312 (2019/November-3)

Homogeneously derived transit timings for 17 exoplanets and reassessed TTV trends for WASP-12 and WASP-4.

BALUEV R.V., SOKOV E.N., JONES H.R.A., SHAIDULIN V.S., SOKOVA I.A., NIELSEN L.D., BENNI P., SCHNEITER E.M., VILLARREAL D'ANGELO C., FERNANDEZ-LAJUS E., DI SISTO R.P., BASTURK O., BRETTON M., WUNSCHE A., HENTUNEN V.-P., SHADICK S., JONGEN Y., KANG W., KIM T., PAKSTIENE E., QVAM J.K.T., KNIGHT C.R., GUERRA P., MARCHINI A., SALVAGGIO F., PAPINI R., EVANS P., SALISBURY M., GARCIA F., MOLINA D., GARLITZ J., ESSEIVA N., OGMEN Y., KARAVAEV Y., RUSOV S., IBRAHIMOV M.A. and KARIMOV R.G.

Abstract (from CDS):

We homogeneously analyse ∼3.2 x 105 photometric measurements for ∼1100 transit light curves belonging to 17 exoplanet hosts. The photometric data cover 16 years (2004-2019) and include amateur and professional observations. Old archival light curves were reprocessed using up-to-date exoplanetary parameters and empirically debiased limb-darkening models. We also derive self-consistent transit and radial-velocity fits for 13 targets. We confirm the non-linear transit timing variation (TTV) trend in the WASP-12 data at a high significance, and with a consistent magnitude. However, Doppler data reveal hints of a radial acceleration of about -7.5 ± 2.2 m s–1 yr–1, indicating the presence of unseen distant companions, and suggesting that roughly 10 per cent of the observed TTV was induced via the light-travel (or Roemer) effect. For WASP-4, a similar TTV trend suspected after the recent TESS observations appears controversial and model dependent. It is not supported by our homogeneous TTV sample, including 10 ground-based EXPANSION light curves obtained in 2018 simultaneously with TESS. Even if the TTV trend itself does exist in WASP-4, its magnitude and tidal nature are uncertain. Doppler data cannot entirely rule out the Roemer effect induced by possible distant companions.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: data analysis - methods: statistical - techniques: photometric - techniques: radial velocities - surveys - planetary systems

Simbad objects: 22

goto Full paper

goto View the references in ADS

Number of rows : 22
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     ~ 41 0
2 WASP-12 ** 06 30 32.7966092352 +29 40 20.263502460   12.14 11.57     G0V 269 2
3 WASP-12b Pl 06 30 32.7966788910 +29 40 20.266334158           G0 664 1
4 XO-5 * 07 46 51.9614762400 +39 05 40.460854956     12.1 11.95   G8V 45 1
5 BD+50 1471 PM* 07 48 06.4723053776 +50 13 32.920598923   12.002 11.138 10.669 10.243 G9V 153 1
6 HAT-P-13 * 08 39 31.8072358440 +47 21 07.273799280   11.15 10.42 10.40   G4 123 2
7 HAT-P-13b Pl 08 39 31.8073600797 +47 21 07.275628863           ~ 97 1
8 HAT-P-13c Pl 08 39 31.8073600797 +47 21 07.275628863           ~ 48 1
9 Ross 905 PM* 11 42 11.0933350978 +26 42 23.650782778   12.06 10.613 10.272 8.24 M3V 569 1
10 Ross 905b Pl 11 42 11.0933874353 +26 42 23.658083337           ~ 705 1
11 HAT-P-3 * 13 44 22.5937349736 +48 01 43.205733624   12.53 11.86     K1V 73 1
12 Qatar 2 PM* 13 50 37.4100326640 -06 48 14.421574044   14.0   13.45   K5V 54 1
13 BD+35 3293 V* 18 34 31.6252443960 +35 39 41.491899468   11.07 10.63 10.52   F7V 117 1
14 NAME V672 Lyr b Pl 19 04 09.8516024106 +36 37 57.445911611           ~ 319 1
15 CoRoT-2 * 19 27 06.4944378024 +01 23 01.359897468   13.422 12.568 12.204 11.49 G7V+K9V 229 2
16 HD 189733 BY* 20 00 43.7129433648 +22 42 39.073143456 9.241 8.578 7.648 7.126 6.68 K2V 805 1
17 WASP-2 V* 20 30 54.1282355304 +06 25 46.341284844   13 11.98     K1.5 124 1
18 WASP-6 * 23 12 37.7368282608 -22 40 26.273805024   12.90 11.91     G8V 80 1
19 WASP-6b Pl 23 12 37.7368657624 -22 40 26.277489164           ~ 115 1
20 WASP-52 * 23 13 58.7576098848 +08 45 40.572305352   12.9 12.0 12.03   K2V 60 1
21 WASP-4 PM* 23 34 15.0857248317 -42 03 41.047972591   13.51 12.48 11.9   G7V 149 1
22 WASP-5 V* 23 57 23.7564672192 -41 16 37.743700800   12.808 12.146 12.058 11.44 G4V 104 1

To bookmark this query, right click on this link: simbad:objects in 2019MNRAS.490.1294B and select 'bookmark this link' or equivalent in the popup menu


2022.07.06-00:53:50

© Université de Strasbourg/CNRS

    • Contact