2015A&A...577A.109M


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.31CET18:32:34

2015A&A...577A.109M - Astronomy and Astrophysics, volume 577A, 109-109 (2015/5-1)

No variations in transit times for Qatar-1 b.

MACIEJEWSKI G., FERNANDEZ M., ACEITUNO F.J., OHLERT J., PUCHALSKI D., DIMITROV D., SEELIGER M., KITZE M., RAETZ S., ERRMANN R., GILBERT H., PANNICKE A., SCHMIDT J.-G. and NEUHAEUSER R.

Abstract (from CDS):

The transiting hot-Jupiter planet Qatar-1 b exhibits variations in transit times that could be perturbative. A hot Jupiter with a planetary companion on a nearby orbit would constitute an unprecedented planetary configuration, which is important for theories of the formation and evolution of planetary systems. We performed a photometric follow-up campaign to confirm or refute transit timing variations. We extend the baseline of transit observations by acquiring 18 new transit light curves acquired with 0.6-2.0m telescopes. These photometric time series, together with data available in the literature, were analyzed in a homogenous way to derive reliable transit parameters and their uncertainties. We show that the dataset of transit times is consistent with a linear ephemeris leaving no hint of any periodic variations with a range of 1-min. We find no compelling evidence of a close-in planetary companion to Qatar-1 b. This finding is in line with a paradigm that hot Jupiters are not components of compact multiplanetary systems. Based on dynamical simulations, we place tighter constraints on the mass of any fictitious nearby planet in the system. Furthermore, new transit light curves allowed us to redetermine system parameters with better precision than reported in previous studies. Our values generally agree with previous determinations.

Abstract Copyright:

Journal keyword(s): planets and satellites: individual: Qatar 1b - stars: individual: Qatar 1

VizieR on-line data: <Available at CDS (J/A+A/577/A109): q1data.dat>

Simbad objects: 3

goto Full paper

goto View the reference in ADS

Number of rows : 3

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 BD+35 3293 V* 18 34 31.6255913635 +35 39 41.489193276   11.07 10.63 10.52   F7V 110 1
2 Qatar 1b Pl 20 13 31.6176375816 +65 09 43.490914045           ~ 44 1
3 Qatar 1 PM* 20 13 31.6176375816 +65 09 43.490914045   13.90 12.84 12.65 11.71 ~ 36 1

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2015A&A...577A.109M and select 'bookmark this link' or equivalent in the popup menu


2020.10.31-18:32:34

© Université de Strasbourg/CNRS

    • Contact