2013A&A...555A..92V


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.09CEST02:17:57

2013A&A...555A..92V - Astronomy and Astrophysics, volume 555A, 92-92 (2013/7-1)

Qatar-1: indications for possible transit timing variations.

VON ESSEN C., SCHROETER S., AGOL E. and SCHMITT J.H.M.M.

Abstract (from CDS):

Variations in the timing of transiting exoplanets provide a powerful tool for detecting additional planets in the system. Thus, the aim of this paper is to discuss the plausibility of transit timing variations (TTVs) on the Qatar-1 system by means of primary transit light curves analysis. Furthermore, we provide an interpretation of the timing variation. We observed Qatar-1 between March 2011 and October 2012 using the 1.2m OLT telescope in Germany and the 0.6m PTST telescope in Spain. We present 26 primary transits of the hot Jupiter Qatar-1b. In total, our light curves cover a baseline of 18 months. We report on indications for possible long-term TTVs. Assuming that these TTVs are true, we present two different scenarios that could explain them. Our reported ∼190 days TTV signal can be reproduced by either a weak perturber in resonance with Qatar-1b, or by a massive body in the brown dwarf regime. More observations and radial velocity monitoring are required to better constrain the perturber's characteristics. We also refine the ephemeris of Qatar-1b, which we find to be T0=2456157.42204±0.0001BJDTDB and P=1.4200246±0.0000007-days, and improve the system orbital parameters.

Abstract Copyright:

Journal keyword(s): methods: data analysis - methods: observational - techniques: photometric - eclipses

VizieR on-line data: <Available at CDS (J/A+A/555/A92): list.dat sp/*>

Simbad objects: 15

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Number of rows : 15

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 HAT-P-13 * 08 39 31.8073600797 +47 21 07.275628863   11.15 10.42 10.40   G4 114 2
2 NAME OGLE-TR-111b Pl 10 53 17.8066842748 -61 24 20.606379347           ~ 107 1
3 BD+35 3293b Pl 18 34 31.6255913635 +35 39 41.489193276           ~ 99 1
4 Kepler-30 Ro* 19 01 08.0746750853 +38 56 50.218666290   16.50   15.95 14.55 ~ 121 1
5 Kepler-9 Ro* 19 02 17.7544105084 +38 24 03.177247136     13.9 14.09   G2 157 1
6 Kepler-19 Ro* 19 21 40.9995767736 +37 51 06.436261131   12.88 12.04 12.02   ~ 68 1
7 Kepler-31 Ro* 19 36 05.5270041046 +45 51 11.106441920           ~ 55 1
8 Kepler-11 Ro* 19 48 27.6228219845 +41 54 32.902654079       14.00   G2V 297 1
9 Kepler-32 Ro* 19 51 22.1742182229 +46 34 27.389715146           M1V 86 1
10 Kepler-18 Ro* 19 52 19.0688249829 +44 44 46.807526602       13.93   ~ 98 1
11 Kepler-29 Ro* 19 53 23.6020058528 +47 29 28.436169957           ~ 55 1
12 Qatar 1b Pl 20 13 31.6176375816 +65 09 43.490914045           ~ 39 1
13 Qatar 1 PM* 20 13 31.6176375816 +65 09 43.490914045   13.90 12.84 12.65 11.71 ~ 35 1
14 WASP-10b Pl 23 15 58.3005497925 +31 27 46.294728182           ~ 91 1
15 WASP-5b Pl 23 57 23.7565609528 -41 16 37.745589460           ~ 74 1

    Equat.    Gal    SGal    Ecl

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2020.08.09-02:17:57

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