J/AJ/151/17 Eight transiting light curves of WASP-43b (Jiang+, 2016)
The possible orbital decay and transit timing variations of the planet WASP-43b.
Jiang I.-G., Lai C.-Y., Savushkin A., Mkrtichian D., Antonyuk K., Griv E.,
Hsieh H.-F., Yeh L.-C.
<Astron. J., 151, 17 (2016)>
=2016AJ....151...17J 2016AJ....151...17J (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Planets ; Photometry
Keywords: planetary systems - techniques: photometric
Abstract:
Motivated by the previously reported high orbital decay rate of the
planet WASP-43b, we have obtained and present eight newly transiting
light curves. Together with other data in the literature, we perform a
self-consistent timing analysis with data covering a timescale of 1849
epochs. The results give an orbital decay rate
dP/dt=-0.02890795±0.00772547s/year, which is one order smaller than
previous values. This slow decay rate corresponds to a normally
assumed theoretical value of the stellar tidal dissipation factor. In
addition, through the frequency analysis, the transit timing
variations presented here are unlikely to be periodic, but could be
signals of a slow orbital decay.
Description:
In this project, two telescopes were employed to observe the transits
of WASP-43b. One is the 1.25m telescope (AZT-11) at the Crimean
Astrophysical Observatory (CrAO) in Nauchny, Crimea, and another is
the 60 inch telescope (P60) at Palomar Observatory in California, USA.
We successfully performed one complete transit observation with AZT-11
in 2012 and seven with P60 in 2014 and 2015. A summary of the above
observations is presented in Table1.
Objects:
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RA (ICRS) DE Designation(s) (Period)
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10 19 38.01 -09 48 22.6 WASP-43 = GSC 05490-00141 (P=0.81347753)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 47 8 The log of observations of this work
table7.dat 32 1616 The photometric light-curve data of this work
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See also:
J/PASP/127/143 : WASP-39b and WASP-43b light curves (Ricci+, 2015)
J/A+A/563/A41 : WASP-43 OSIRIS transmission spectroscopy (Murgas+, 2014)
J/A+A/563/A40 : WASP-43b g'r'i'z'JHK light curves (Chen+, 2014)
J/A+A/542/A4 : WASP-43b thirty eclipses (Gillon+, 2012)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 I1 --- Run [1/8] Observation run identifier
3- 13 A11 "Y:M:D" Date UT date
15- 20 A6 --- Inst Instrument (AZT-11 or P60) (1)
22 A1 --- Flt [R] Filter
24- 31 F8.3 d Date0 [6011/7042] Starting observation date (JD-2450000)
32 A1 --- --- [-]
33- 40 F8.3 d Date1 [6011/7042] Ending observation date (JD-2450000)
42- 43 I2 s Exp [10/30] Exposure time
45- 47 I3 --- Nimg [150/251] Number of images
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Note (1): The two facilities are defined as below:
AZT-11 = The 1.25m telescope at the Crimean Astrophysical Observatory (CrAO)
in Nauchny, Crimea;
P60 = The 60 inch telescope at Palomar Observatory in California, USA.
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 I1 --- Run [1/8] Observation run identifier (see Table1
for details)
3- 6 I4 --- Epoch [593/1860] Epoch identifier (1)
8- 23 F16.8 d BJD Barycentric Julian Date (Barycentric Dynamical
Time (TDB) based)
25- 32 F8.6 --- Flux [0.96/1.02] Relative flux
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Note (1): The epoch is the number of transit calculated from the first transit
presented in Hellier et al. (2011A&A...535L...7H 2011A&A...535L...7H). The transit observed in
Hellier et al. (2011A&A...535L...7H 2011A&A...535L...7H) is epoch 0.
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History:
From electronic version of the journal
(End) Prepared by [AAS]; Sylvain Guehenneux [CDS] 11-Jul-2016