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J/A+A/608/A135 Sodium detection in WASP-69b atmosphere (Casasayas-Barris+, 2017)

Detection of sodium in the atmosphere of WASP-69b. Casasayas-Barris N., Palle E., Nowak G., Yan F., Nortmann L., Murgas F. <Astron. Astrophys. 608, A135 (2017)> =2017A&A...608A.135C (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Planets ; Spectroscopy Keywords: planetary systems - planets and satellites: individual: WASP-69b - planets and satellites: individual: HD189733b - planets and satellites: atmospheres - methods: observational - techniques: spectroscopic Abstract: We analyze the transmission spectrum around the Na I doublet at 589nm of the extrasolar planet WASP-69b, and compare the analysis to that of the well-know hot Jupiter HD 189733b. We also present the analysis of the Rossiter-McLaughlin (RM) effect for WASP-69b. We observed two transits of WASP-69b with the HARPS-North spectrograph (R=115 000) at the TNG telescope. We perform a telluric contamination subtraction based on the comparison between the observed spectra and a telluric water model. Then, the common steps of the differential spectroscopy are followed to extract the transmission spectrum. The method is tested with archival transit data of the extensively studied exoplanet HD 189733b, obtained with the HARPS-South spectrograph at ESO 3.6m telescope, and then applied to WASP-69b data. For HD 189733b, we spectrally resolve the NaI doublet and measure line contrasts of 0.72±0.05% (D2) and 0.51±0.05% (D1), and FWHMs of 0.64±0.04Å (D2) and 0.60±0.06Å (D1), in agreement with previously published results. For WASP-69b only the contrast of the D2 line can be measured (5.8±0.3%). This corresponds to a detection at the 5sigma-level of excess absorption of 0.5±0.1% in a passband of 1.5Å. By measuring the RM effect, we get an angular rotation of 0.24+0.02-0.01rad/day and a sky-projected angle between the stellar rotation axis and the normal of orbit plane of 0.4+2.0-1.9° FOR wasP-69b. Similar results to those previously presented in the literature are obtained for the RM analysis of HD 189733b. Description: The transmission spectra and (spectro-)photometric light curves of WASP-69b and HD 189733b are presented. Two transits of WASP-69b with HARPS-North at TNG telescope were retrieved and three transit archival data of HD189733b using HARPS at the 3.6m La Silla telescope were used. For each planet the transmission spectrum and the (spectro-)photometric light curves for 0.75, 1.5 and 3.0 Angstroem passbands are given. Objects: ----------------------------------------------------- RA (2000) DE Designation(s) ----------------------------------------------------- 21 00 06.19 -05 05 40.1 WASP-69b = WASP-69b 20 00 43.71 +22 42 39.1 HD189733b = HD 189733b ----------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tsw69b.dat 36 3510 Transmission spectrum of WASP-69b tshd189b.dat 36 3510 Transmission spectrum of HD189733b lcw69b.dat 70 10 Spectro-photometric light curves of WASP-69b lchd189b.dat 70 36 Spectro-photometric light curves of HD189733b
Byte-by-byte Description of file: tshd189b.dat tsw69b.dat
Bytes Format Units Label Explanations
1- 7 F7.2 0.1nm lambda Wavelength in Angstroem 9- 22 E14.8 % RFlux Relative Flux in % (1) 24- 36 E13.8 % e_RFlux Error on RFlux
Note (1): The final transmission spectrum (F) is the result of a ratio between spectra. We present the data in % with the continuum in the 0 level by applying (F-1.0)*100[%].
Byte-by-byte Description of file: lchd189b.dat lcw69b.dat
Bytes Format Units Label Explanations
1- 10 F10.7 --- Phase Orbital phase 12- 20 F9.7 --- RFlux075 Relative Flux in a 0.75 Angstroem passband (1) 22- 30 F9.7 --- e_RFlux075 Errors for a 0.75A passband 32- 40 F9.7 --- RFlux150 Relative Flux in a 1.50 Angstroem passband (1) 42- 50 F9.7 --- e_RFlux150 Errors for a 1.50A passband 52- 60 F9.7 --- RFlux300 Relative Flux in a 3.0 Angstroem passband (1) 62- 70 F9.7 --- e_RFlux300 Errors for a 3.0A passband
Note (1): The flux values are the result of ratios between spectra. The presented values are normalized to 1.
Acknowledgements: Nuria Casasayas-Barris, nuracb(at)iac.es
(End) Nuria Casasayas-Barris [IAC, Spain], Patricia Vannier [CDS] 23-Oct-2017
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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