J/MNRAS/381/851 SuperWASP-North extrasolar planet candidates (Clarkson+, 2007)
SuperWASP-North extrasolar planet candidates between 3h < RA < 6h.
Clarkson W.I., Enoch B., Haswell C.A., Norton A.J., Christian D.J.,
Cameron A.C., Kane S.R., Horne K.D., Lister T.A., Street R.A., West R.G.,
Wilson D.M., Evans N., Fitzsimmons A., Hellier C., Hodgkin S.T., Irwin J.,
Keenan F.P., Osborne J.P., Parley N.R., Pollacco D.L., Ryans R.,
Skillen I., Wheatley P.J.
<Mon. Not. R. Astron. Soc., 381, 851-864 (2007)>
=2007MNRAS.381..851C 2007MNRAS.381..851C
ADC_Keywords: Planets ; Stars, variable
Keywords: methods: data analysis - planetary systems - stars: variables: other
Abstract:
The Wide Angle Search for Planets (WASP) photometrically surveys a
large number of nearby stars to uncover candidate extrasolar planet
systems by virtue of small-amplitude light curve dips on a ≤5d
time-scale typical of the 'Hot-Jupiters'. Observations with the
SuperWASP-North instrument between 2004 April and September produced a
rich photometric data set of some 1.3x109 data points from 6.7
million stars. Our custom-built data acquisition and processing system
produces ∼0.02mag photometric precision at V=13.
We present the transit candidates in the 03h-06h RA range. Out of
141895 light curves with sufficient sampling to provide adequate
coverage, 2688 show statistically significant transit-like
periodicities. Out of these, 44 pass a visual inspection of the light
curve, of which 24 are removed through a set of cuts on the
statistical significance of artefacts. All but four of the remaining
20 objects are removed when prior information at higher spatial
resolution from existing catalogues is taken into account. Of the four
candidates remaining, one is considered a good candidate for follow-up
observations with three further second-priority targets. We provide
detailed information on these candidates, as well as a selection of
the false-positives and astrophysical false-alarms that were
eliminated, and discuss briefly the impact of sampling on our results.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 87 44 Candidates from the BLS search that pass an
initial visual inspection
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See also:
J/MNRAS/372/1117 : SuperWASP exoplanetary transit survey (Christian+, 2006)
J/A+A/467/785 : SuperWASP/ROSAT periodic variable stars (Norton+, 2007)
J/MNRAS/379/647 : SuperWASP-North extrasolar planet candidates (Lister+, 2007)
J/MNRAS/379/816 : SuperWASP-North extrasolar planet candidates (Street+, 2007)
J/MNRAS/384/1097 : SuperWASP-North extrasolar planet candidates (Kane+, 2008)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- SWASP SWASP designation (JHHMMSS.SS+DDMMSS.s)
21- 28 F8.6 d Per Periodicity of transit
30- 33 F4.2 h Dur Duration of transit
35- 40 F6.4 mag Depth Photometric transit depth
42- 43 I2 --- Ntr Number of transits observed
45- 48 I4 --- Nobs Number of valid observations of the object
50- 52 I3 --- N Number of valid points during transit
54- 61 F8.3 --- Dchi2 Improvement of the best-fitting transit model
over a flat light curve model
63- 68 F6.3 --- Ratio Ratio of fitting statistic Dchi2 when using
the transit model to an 'anti-transit'
brightening model
(Δχ2/Δχ2-)
70- 75 F6.3 --- Sell S/N of ellipsoidal variation
77- 82 F6.3 --- Sred S/N including correlated noise
84- 85 A2 --- Vis [P1 P2] Priority according to the candidate at
the stage of the visual examination and the
primary reason for its rejection
(if applicable)
87 A1 --- Cut [RPEA] Reasons for removal (1)
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Note (1): Reasons for removal are as follows:
R = low S/N against correlated 'red' noise (R),
E = presence of ellipsoidal variations
A = low Δχ2/Δχ2- (transit/anti-transit ratio)
P = unexplained
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 05-Dec-2008