2010A&A...522A..29L


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.16CET14:12:30

2010A&A...522A..29L - Astronomy and Astrophysics, volume 522, A29-29 (2010/11-1)

New parameters and transit timing studies for OGLE2-TR-L9 b.

LENDL M., AFONSO C., KOPPENHOEFER J., NIKOLOV N., HENNING T., SWAIN M. and GREINER J.

Abstract (from CDS):

Repeated observations of exoplanet transits allow us to refine the planetary parameters and probe them for any time dependent variations. In particular deviations of the period from a strictly linear ephemeris, transit timing variations (TTVs), can indicate the presence of additional bodies in the planetary system. Our goal was to reexamine the largely unstudied OGLE2-TR-L9 system with high cadence, multi-color photometry in order to refine the planetary parameters and probe the system for TTVs. We observed five full transits of OGLE2-TR-L9 with the GROND instrument at the ESO/MPG 2.2m telescope at La Silla Observatory. GROND is a multichannel imager that allowed us to gather simultaneous light curves in the g', r', i', and z' filters. From our analysis we find that the semi-major axis and the inclination differ from the previously published values. With the newly observed transits, we were able to refine the ephemeris to 2454492.80008(±0.00014)+2.48553417(±6.4x10–7)E. The newly derived parameters are a=0.0418±0.0015AU, rp=1.67±0.05Rj, and inc=82.47°±0.12, differing significantly in a and inc from the previously published values. Within our data, we find indications for TTVs.

Abstract Copyright:

Journal keyword(s): techniques: photometric - planetary systems - planets and satellites: individual: OGLE2-TR-L9 b

VizieR on-line data: <Available at CDS (J/A+A/522/A29): tableg.dat tablei.dat tabler.dat tablez.dat>

Simbad objects: 2

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Number of rows : 2

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 NAME OGLE2-TR-L9b Pl 11 07 55.181 -61 08 46.58           ~ 22 1
2 NAME OGLE2-TR-L9 * 11 07 55.181 -61 08 46.58       14.74 14.00 F3 32 1

    Equat.    Gal    SGal    Ecl

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2019.12.16-14:12:30

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