J/MNRAS/437/3133 Candidate Neptunes around late-type dwarfs (Gaidos+, 2014)
Trawling for transits in a sea of noise: A Search for Exoplanets by Analysis of
WASP Optical Lightcurves and Follow-up (SEAWOLF).
Gaidos E., Anderson D.R., Lepine S., Colon K.D., Maravelias G., Narita N.,
Chang, E., Beyer J., Fukui, A., Armstrong J.D., Zezas, A., Fulton B.J.,
Mann A.W., West, R.G., Faedi F.
<Mon. Not. R. Astron. Soc. 437, 3133 (2014)>
=2014MNRAS.437.3133G 2014MNRAS.437.3133G
ADC_Keywords: Stars, double and multiple ; Stars, late-type ; Planets
Keywords: techniques: photometric - surveys -
planets and satellites: detection -
planets and satellites: formation - planets and satellites: general -
stars: late-type
Abstract:
Studies of transiting Neptune-size planets orbiting close to nearby
bright stars can inform theories of planet formation because mass and
radius and therefore mean density can be accurately estimated and
compared with interior models. The distribution of such planets with
stellar mass and orbital period relative to their Jovian-mass
counterparts can test scenarios of orbital migration, and whether
"hot" (period <10d) Neptunes evolved from "hot" Jupiters as a result
of mass loss. We searched 1763 late K and early M dwarf stars for
transiting Neptunes by analyzing photometry from the Wide Angle Search
for Planets and obtaining high-precision (≤10-3) follow-up
photometry of stars with candidate transit signals.
We identified 92 candidate signals among 80 other stars and carried
out 148 observations of predicted candidate transits with 1-2m
telescopes.
Description:
For our search sample we identified late-type (K4 to M4) dwarf stars
in the inaugural (2004) fields of the WASPNorth survey (Christian et
al., 2006, Cat. J/MNRAS/372/1117).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 85 7 Telescopes used to obtain follow-up observations
table2.dat 70 92 Candidate transit systems identified in WASP data
table3.dat 45 148 Observations of candidate transits
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See also:
I/298 : LSPM-North Catalog (Lepine+ 2005)
J/MNRAS/372/1117 : SuperWASP exoplanetary transit survey (Christian+, 2006)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 23 A23 --- Tel Telescope
25- 28 F4.2 m Diam Diameter of the telescope
30- 37 F8.5 deg Lat Latitude of telescope
39 A1 --- n_Lat [N] Orientation of latitude
41- 49 F9.5 deg Lon Longitude of telescope
51 A1 --- n_Lon [EW] Orientation of longitude
53- 66 A14 --- Inst Instrument(s)
67 A1 --- r_Inst [b] Reference (1)
69- 82 A14 --- Band Passband(s)
84- 85 I2 ---- Nobs [1/66] Number of usable data of a candidate
transit event (C>0)
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Note (1): Yanagisawa et al. (2006, in Society of Photo-Optical Instrumentation
Engineers (SPIE) Conference Series, Vol. 6269, Society of Photo-Optical
Instrumentation Engineers (SPIE) Conference Series)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Star Name of star (HHMMm+DDMM)
11 A1 --- m_Star [ABC] Multiple signals from the same star
13- 14 I2 h RAh Right Ascension J2000 (hours)
16- 17 I2 min RAm Right Ascension J2000 (minutes)
19- 22 F4.1 s RAs Right Ascension J2000 (seconds)
24 A1 --- DE- Declination J2000 (sign)
25- 26 I2 deg DEd Declination J2000 (degrees)
28- 29 I2 arcmin DEm Declination J2000 (minutes)
31- 32 I2 arcsec DEs Declination J2000 (seconds)
34- 37 F4.1 mag Vmag V magnitude
39- 42 F4.2 mag V-J V-J colour index
44- 49 F6.3 d Per [1/24] Period
52- 60 F9.4 d Tc Ephemeris (BJD-2450000)
63- 68 F6.1 10-3 Depth [1/26] Transit depth δ
70 A1 --- St [XAN?] Status (1)
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Note on (1): Status as follows:
X = ruled out
? = ambiguous or insufficient data
A = candidate
N = not observed
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Star Name of star (HHMMm+DDMM)
11 A1 --- m_Star [ABC] Multiple signals from the same star
13- 25 A13 --- Tel Telescope (as defined in table1.dat)
27- 33 F7.2 d Tc Predicted transit center
(Geocentric JD-2450000)
35- 39 F5.1 10-3 Dlim [0.3/118] Detection limit δd
41- 45 F5.3 --- C [0/1] Observational completeness
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Acknowledgements:
Eric Gaidos, gaidos(at)hawaii.edu
(End) Eric Gaidos [Univ. Hawaii], Patricia Vannier [CDS] 04-Nov-2013