J/A+A/549/A10 Transits of GJ 1214 (Harpsoe+, 2013)
The transiting system GJ1214: high-precision defocused transit observations
and a search for evidence of transit timing variation.
Harpsoe K.B.W., Hardis S., Hinse T.C., Jorgensen U.G., Mancini L.,
Southworth J., Alsubai K.A., Bozza V., Browne P., Burgdorf M.J.,
Calchi Novati S., Dodds P., Dominik M., Finet F., Gerner T., Hundertmark M.,
Kains N., Kerins E., Liebig C., Mathiasen M., Nesvorny D., Nikolov N.,
Penny M.T., Proft S., Rahvar S., Ricci D., Sahu K.C., Scarpetta G.,
Schafer S., Schonebeck F., Snodgrass C., Skottfelt J., Surdej J.,
Tregloan-Reed J., Wertz O.
<Astron. Astrophys. 549, A10 (2013)>
=2013A&A...549A..10H 2013A&A...549A..10H
ADC_Keywords: Stars, double and multiple ; Planets ; Photometry
Keywords: planetary systems - stars: individual: GJ1214 -
methods: statistical - methods: observational -
techniques: photometric
Abstract:
We present 11 high-precision photometric transit observations of the
transiting super-Earth planet GJ 1214 b. Combining these data with
observations from other authors, we investigate the ephemeris for
possible signs of transit timing variations (TTVs) using a Bayesian
approach.
The observations were obtained using telescope-defocusing techniques,
and achieve a high precision with random errors in the photometry as
low as 1 mmag per point. To investigate the possibility of TTVs in the
light curve, we calculate the overall probability of a TTV signal
using Bayesian methods.
Description:
This archive contains the extracted photometric data points from the
observations presented in Table 1. The files are named after the date
of observation and filter if necessary, and contain three columns. The
data reduction is described in the paper in section 2.
Objects:
---------------------------------------------
RA (2000) DE Designation(s)
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17 15 18.94 +04 57 49.7 GJ1214 = LHS 3275
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 84 11 Log of the transit observations of GJ 1214 for
this work
070610.dat 41 33 2010/07/06 DFOSC I light curve (JD=2455383)
071410.dat 41 142 2010/07/14 DFOSC I light curve (JD=2455391)
080210.dat 41 154 2010/08/02 DFOSC I light curve (JD=2455410)
082110.dat 41 154 2010/08/21 DFOSC I light curve (JD=2455429)
060311.dat 41 101 2011/06/03 DFOSC R light curve (JD=2455715)
080610i.dat 41 71 2010/08/06 DFOSC i light curve (JD=2455415)
082511g.dat 41 123 2011/08/25 BUSCA g light curve (JD=2455799)
082511r.dat 41 125 2011/08/25 BUSCA r light curve (JD=2455799)
082511z.dat 41 125 2011/08/25 BUSCA z light curve (JD=2455799)
042910i.dat 41 89 2010/04/29 GROND i light curve (JD=2455315)
042910r.dat 41 90 2010/04/29 GROND r light curve (JD=2455315)
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 "YYYY/MM/DD" Date Observation date
12- 16 A5 --- Tel Telescope instrument
(BFOSC/DFOSC/BUSCA/GROND)
18- 22 A5 "h:m" Start UTC starting time
24- 28 A5 "h:m" End UTC ending time
30- 32 I3 --- Nexp Number of exposures
34- 36 I3 s exp1 [50/150] Exposure time
37 A1 --- --- [-]
38- 39 I2 s exp2 [90]? Second exposure time
41 A1 --- Filt [IRigrz] Filter used
43- 51 A9 --- Airmass Airmass interval
53- 56 F4.2 mmag Scat Scatter
58- 67 A10 --- Ap Aperture sizes (1)
69- 72 I4 pix2 Area ? PSF area
74- 84 A11 --- FileName Name of the file with photometry
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Note (1): The three numbers are the apertures radii in pixels of the
object aperture and the inner and outer edge of the sky annulus.
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Byte-by-byte Description of file: 0*.dat
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Bytes Format Units Label Explanations
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3- 15 F13.7 d JD Julian Date of Observation (JD-2400000)
18- 27 F10.7 mag Dmag Differential magnitude
31- 39 F9.7 mag e_Dmag rms uncertainty on Dmag
41 A1 --- Filt [IRigrz] Filter used
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Acknowledgements:
Kennet Harpsoe,
(End) Kennet Harpsoe [NBI, Denmark], Patricia Vannier [CDS] 17-Oct-2012