J/MNRAS/445/1114 WASP-69b, WASP-70Ab and WASP-84b (Anderson+, 2014)
Three newly discovered sub-Jupiter-mass planets: WASP-69b and WASP-84b transit
active K dwarfs and WASP-70Ab transits the evolved primary of a G4+K3 binary.
Anderson D.R., Collier Cameron A., Delrez L., Doyle A.P., Faedi F.,
Fumel A., Gillon M., Gomez Maqueo Chew Y., Hellier C., Jehin E., Lendl M.,
Maxted P.F.L., Pepe F., Pollacco D., Queloz D., Segransan D., Skillen I.,
Smalley B., Smith A.M.S., Southworth J., Triaud A.H.M.J., Turner O.D.,
Udry S., West R.G.
<Mon. Not. R. Astron. Soc., 445, 1114-1129 (2014)>
=2014MNRAS.445.1114A 2014MNRAS.445.1114A
ADC_Keywords: Binaries, eclipsing ; Stars, double and multiple ; Planets ;
Photometry ; Radial velocities
Keywords: techniques: photometric - techniques: radial velocities -
planets and satellites: detection -
planets and satellites: individual: WASP-69b -
planets and satellites: individual: WASP-70Ab -
planets and satellites: individual: WASP-84b
Abstract:
We report the discovery of the transiting exoplanets WASP-69b,
WASP-70Ab and WASP-84b, each of which orbits a bright star (V∼10).
WASP-69b is a bloated Saturn-mass planet (0.26MJup, 1.06RJup) in a
3.868-d period around an active, ∼1-Gyr, mid-K dwarf. ROSAT detected
X-rays 60±27" from WASP-69. If the star is the source then the
planet could be undergoing mass-loss at a rate of ∼1012g/s. This is
one to two orders of magnitude higher than the evaporation rate
estimated for HD 209458b and HD 189733b, both of which have exhibited
anomalously large Lyman α absorption during transit. WASP-70Ab
is a sub-Jupiter-mass planet (0.59MJup, 1.16RJup) in a 3.713-d
orbit around the primary of a spatially resolved, 9-10-Gyr, G4+K3
binary, with a separation of 3.3 arcsec ( ≥800AU). WASP-84b is a
sub-Jupiter-mass planet (0.69MJup, 0.94RJup) in an 8.523-d orbit
around an active, ∼1-Gyr, early-K dwarf. Of the transiting planets
discovered from the ground to date, WASP-84b has the third-longest
period. For the active stars WASP-69 and WASP-84, we pre-whitened the
radial velocities using a low-order harmonic series. We found that
this reduced the residual scatter more than did the oft-used method of
pre-whitening with a fit between residual radial velocity and bisector
span. The system parameters were essentially unaffected by
pre-whitening.
Description:
Three tables of data on the three planet host stars are provided:
table2.dat is the WASP survey photometry; table3.dat is the radial
velocities from CORALIE and HARPS; and table4.dat is the high-SNR
photometry taken with EulerCam, TRAPPIST and RISE.
Objects:
-----------------------------------------------------
RA (2000) DE Designation(s)
-----------------------------------------------------
21 00 06.19 -05 05 40.1 WASP-69 = BD-05 5432
21 01 54.48 -13 25 59.8 WASP-70 = HD 358155
08 44 25.71 +01 51 36.0 WASP-84 = TYC 211-706-1
-----------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 60 106235 WASP survey photometry
table3.dat 57 68 CORALIE and HARPS radial velocities
table4.dat 60 10328 EulerCam, TRAPPIST and RISE transit photometry
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Set [1/19] Index of dataset
4- 8 A5 --- --- [WASP-]
9- 10 I2 --- WASP [69/84] WASP star number (69, 70 or 84)
12- 22 A11 --- Field Field name
24- 27 I4 yr Season [2008/2011] Season
29- 31 I3 --- Camera [141/226] Camera number
33- 43 F11.6 d HJD Heliocentric Julian Date (UTC) at mid-exposure
(HJD-2450000)
45- 51 F7.4 mag mag WASP (broad, 400-700nm) magnitude
53- 60 F8.4 mag e_mag [0.001/107] Magnitude error
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 I1 --- Set [1/4] Index of dataset
3- 7 A5 --- --- [WASP-]
8- 9 I2 --- WASP [69/84] WASP star number (69, 70 or 84)
10 A1 --- --- [A] for WASP-70
12- 18 A7 --- Spect Spectrograph: CORALIE or HARPS
20- 30 F11.6 d BJD Barycentric Julian Date (UTC) at mid-exposure
(BJD-2450000)
32- 40 F9.5 km/s RV Radial velocity
42- 48 F7.5 km/s e_RV Error on radial velocity
50- 57 F8.5 km/s BSpan Bisector Span
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 I1 --- Set Index of dataset
3- 7 A5 --- --- [WASP-]
8- 9 I2 --- WASP [69/84] WASP star number (69, 70 or 84)
10 A1 --- --- [A] for WASP-70
12- 19 A8 --- Imager Imager name: RISE, TRAPPIST or EulerCam
21- 23 A3 --- Filt Filter (1)
30- 40 F11.6 d BJD Barycentric Julian Date (UTC) at mid-exposure
(BJD-2450000)
42- 50 F9.7 --- NFlux Normalised flux
52- 60 F9.7 --- e_NFlux Normalised flux error
--------------------------------------------------------------------------------
Note (1): Filters are r (Gunn) and z' (Sloan) for WPAS-69,
r (Gunn) and Iz' for WASP-70A, and z' (Sloan) and VR for WASP-84
--------------------------------------------------------------------------------
Acknowledgements:
David R. Anderson, d.r.anderson(at)keele.ac.uk
(End) Patricia Vannier [CDS] 09-Apr-2015