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J/A+A/534/A16  WASP-22 and WASP-26 photometry and velocities (Anderson+, 2011)

Spin-orbit measurements and refined parameters for the exoplanet systems WASP-22 and WASP-26. Anderson D.R., Collier Cameron A., Gillon M., Hellier C., Jehin E., Lendl M., Queloz D., Smalley B., Triaud A.H.M.J., Vanhuysse M. <Astron. Astrophys. 534, A16 (2011)> =2011A&A...534A..16A
ADC_Keywords: Binaries, eclipsing ; Planets ; Radial velocities ; Photometry Keywords: binaries: eclipsing - planetary systems - stars: individual: WASP-22, WASP-26 Abstract: We report on spectroscopic and photometric observations through transits of the exoplanets WASP-22b and WASP-26b, intended to determine the systems' spin-orbit angles. We combine these data with existing data to refine the system parameters. We measure a sky-projected spin-orbit angle of 22±16 degrees for WASP-22b, showing the planet's orbit to be prograde and, perhaps, slightly misaligned. We do not detect the Rossiter-McLaughlin effect of WASP-26b due to its low amplitude and observation noise. We place 3-sigma upper limits on orbital eccentricity of 0.063 for WASP-22b and 0.050 for WASP-26b. After refining the drift in the systemic velocity of WASP-22 found by Maxted et al. (2010AJ....140.2007M), we find the third body in the system to have a separation-scaled minimum-mass of 5.3±0.3MJup (a3/5AU)2, where a3 is the orbital separation of the third body. Description: Using the HARPS spectrograph on the ESO 3.6-m telescope (La Silla, Chile), spectra of the planet host stars WASP-22 and WASP-26 were obtained through transits of their close-in planets, as well as across their orbits. The radial-velocity (RV) measurements extracted from the spectra are presented here. RVs were re-extracted from the six HARPS spectra of WASP-22 obtained by Maxted et al. (2010AJ....140.2007M) after removal of the instrumental blaze function (Triaud et al. 2010, Cat. J/A+A/524/A25) and are presented here. Photometric transit observations of WASP-22 were obtained by the 0.6-m TRAPPIST and 1.2-m Euler telescopes (both at La Silla). A transit of WASP-26b was observed by the 0.35-m telescope at Oversky Observatory, La Palma. The Oversky data were originally made available at the Exoplanet Transit Database ( The data are plotted in Figures 1 and 2. Objects: ---------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------- 03 31 16.3 -23 49 11 WASP-22 = TYC 6446-1326-1 00 18 24.7 -15 16 02 WASP-26 = TYC 5839-876-1 ---------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file phot.dat 50 1550 *WASP-22 and WASP-26 dereddened and normalised differential photometry from TRAPPIST, Euler and Oversky rv.dat 56 64 WASP-22 and WASP-26 radial velocities measured by the HARPS spectrograph
Note on phot.dat: In the second TRAPPIST transit of WASP-22, the meridian-flip was performed after HJD=2455532.64930.
See also: J/MNRAS/408/1680 : Transiting planetary system WASP-2 (Southworth+, 2010) J/MNRAS/399/287 : Transiting planetary system WASP-4 (Southworth+, 2009) J/A+A/530/A5 : WASP-4b Ks-band thermal emission detection (Caceres+, 2011) J/AJ/137/3826 : Two transits of the giant planet WASP-4b (Winn+, 2009) J/MNRAS/396/1023 : Transiting planetary system WASP-5 (Southworth+, 2009) J/A+A/501/785 : Discovery and characterization of WASP-6b (Gillon+, 2009) J/A+A/527/A8 : Transiting planetary system WASP-7 (Southworth+, 2011) J/A+A/517/L1 : Radial velocities of WASP-8b planet (Queloz+, 2010) J/ApJ/692/L100 : Relative photometry of WASP-10 (Johnson+, 2009) J/A+A/528/A65 : WASP-12b transits (Maciejewski+, 2011) J/A+A/502/391 : WASP-13b photometry and radial velocities (Skillen+, 2009) J/ApJ/707/167 : Transiting planetary system WASP-18 (Southworth+, 2009) J/A+A/513/L3 : WASP-19b H-band thermal emission (Anderson+, 2010) J/A+A/519/A98 : Transit of exoplanet WASP-21b (Bouchy+, 2010) J/A+A/520/A56 : WASP-26b RV and photometric data (Smalley+, 2010) J/A+A/526/L10 : Transits of WASP-33 (Herrero+, 2011) J/A+A/526/A130 : WASP-34b photometry and radial velocities (Smalley+, 2011) J/A+A/525/A54 : Transits of WASP-38b (Barros+, 2011) J/A+A/531/A24 : WASP-23 photometric and radial velocity data (Triaud+ 2011) J/A+A/531/A40 : Transits of WASP-39b (Faedi+, 2011) J/A+A/531/A60 : WASP-31b photometry and radial velocities (Anderson+, 2011) J/A+A/533/A88 : WASP-50b photometry and radial velocities (Gillon+, 2011) J/A+A/524/A25 : Radial Velocities on 6 exoplanet host stars (Triaud+, 2010) Byte-by-byte Description of file: phot.dat
Bytes Format Units Label Explanations
1- 13 F13.5 d HJD Heliocentric Julian Date (UTC) 15- 22 F8.6 --- RFlux Flux (relative) 24- 31 F8.6 --- e_RFlux Uncertainty on RFlux 33- 40 A8 --- Inst Instrument used (TRAPPIST, Euler or Oversky) 42- 48 A7 --- Star Star (WASP-22 or WASP-26) 50 I1 --- idx [1/5] Transit data-set index
Byte-by-byte Description of file: rv.dat
Bytes Format Units Label Explanations
1- 14 F14.6 d BJD Barycentric Julian Date (UTC) 16- 23 F8.5 km/s RV Radial velocity 25- 31 F7.5 km/s e_RV Radial velocity error 33- 39 F7.5 km/s FWHM Full width at half maximum of the cross-correlation function (CCF) 41- 48 F8.5 km/s Span Bissector span velocity of the cross-correlation function (CCF) 50- 56 A7 --- Star Star (WASP-22 or WASP-26)
Acknowledgements: David Anderson, dave.skunk(at)
(End) Patricia Vannier [CDS] 16-Sep-2011
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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