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J/A+A/604/L6       EBLM J0555-57 photometry and RV       (von Boetticher+, 2017)

The EBLM Project. III. A Saturn-size low-mass star at the hydrogen-burning limit. von Boetticher A., Triaud A.H.M.J, Queloz D., Gill S., Lendl M., Delrez L., Anderson D.R., Collier Cameron A., Faedi F., Gillon M., Gomez Maqueo Chew Y., Hebb L., Hellier C., Jehin E., Maxted P.F.L., Martin D.V., Pepe F., Pollacco D., Segransan D., Smalley B., Udry S., West R. <Astron. Astrophys. 604, L6 (2017)> =2017A&A...604L...6V (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Photometry ; Radial velocities Keywords: binaries: eclipsing - binaries: spectroscopic - stars: low mass - techniques: spectroscopic - techniques: photometry - stars: individual: EBLM J0555-57Ab Abstract: We report the discovery of an eclipsing binary system with mass-ratio q After identifying a periodic photometric signal received by WASP, we obtained CORALIE spectroscopic radial velocities and follow-up light curves with the Euler and TRAPPIST telescopes. From a joint fit of these data we determine that EBLM J0555-57 consists of a sun-like primary star that is eclipsed by a low-mass companion, on a weakly eccentric 7.8-day orbit. Using a mass estimate for the primary star derived from stellar models, we determine a companion mass of 85±4MJup (0.081M) and a radius of 0.84+0.14-0.04RJup (0.084R) that is comparable to that of Saturn. EBLM J0555-57Ab has a surface gravity logg2=5.50+0.03-0.13 and is one of the densest non-stellar-remnant objects currently known. These measurements are consistent with models of low-mass stars. Description: The data is composed of one TRAPPIST photometric timeseries, two EULER photometric timeseries (one large-aperture observation of A and B components combined, one small-aperture observation of A component) and one set of CORALIE radial velocities. They provide evidence of a low mass star eclipsing EBLM J0555-57A. Objects: ---------------------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------------------- 05 55 32.69 -57 17 26.0 EBLM J0555-57 = 2MASS J05553262-5717261 ---------------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file coralie1.dat 86 20 CORALIE radial velocities I coralie2.dat 86 11 CORALIE radial velocities II eulerl.dat 64 526 Euler z band photometry, large aperture including A and B components eulers.dat 64 526 Euler z band photometry, small aperture on A component trappist.dat 230 1188 TRAPPIST z band photometry, aperture including A and B components
See also: J/A+A/549/A18 : WASP-30 and J1219-39 light + velocity curves (Triaud+, 2013) J/A+A/572/A50 : J0113+31 light + velocity curves (Gomez Maqueo Chew+, 2014) Byte-by-byte Description of file: coralie1.dat coralie2.dat
Bytes Format Units Label Explanations
1- 12 F12.6 d BJD Barycentric Julian date (BJD-2400000) 14- 21 F8.5 km/s RV Radial velocity 23- 29 F7.5 km/s e_RV 1 sigma photon noise error bars on RV 31- 38 F8.5 km/s FWHM Full-width at half-maximum of cross-correlation function 40- 45 F6.3 --- Cont Contrast of cross-correlation function 47- 54 F8.5 km/s BisSpan Span of the bisector inverse slope 56- 60 F5.3 --- pclean ?=- Probability that spectrum is NOT contaminated by blend 62 I1 --- Rej [0/1] Spectrum rejected: 1: rejected, 0: accepted (if pclean<0.01) 64- 86 A23 --- Com Comments
Byte-by-byte Description of file: eulerl.dat eulers.dat
Bytes Format Units Label Explanations
1- 11 F11.6 d HJD Heliocentric Julian Date (HJD-2450000) UTC 13- 20 F8.6 --- Flux Normalised flux 22- 29 F8.6 --- e_Flux 1 sigma error bar on the flux 31- 35 F5.2 pix xshift Centroid shift on detector 37- 41 F5.2 pix yshift Centroid shift on detector 43- 46 F4.2 --- AM Airmass 48- 52 F5.2 pix FWHM Full-width at half-maximum of centroid 54- 58 F5.2 --- Sky Sky background flux 60- 64 F5.2 s ExpTime Exposure times
Byte-by-byte Description of file: trappist.dat
Bytes Format Units Label Explanations
1- 18 F18.13 d BJD Barycentric Julian Date (BJD-2450000) UTC 20- 38 F19.17 --- Flux Normalised flux 40- 62 E23.18 --- e_Flux 1 sigma error bar on the flux 64- 87 E24.17 pix xshift Centroid shift on detector 89-114 E26.19 pix yshift Centroid shift on detector 116-133 F18.16 pix FWHMx Centroid FWHM in x 135-153 F19.16 pix FWHMy Centroid FWHM in y 155-172 F18.16 pix FWHM Centroid FWHM 174-192 F19.15 --- Sky Sky background flux 194-211 F18.16 --- AM Airmass 213-230 F18.16 s ExpTime Exposure time
Acknowledgements: Alexander von Boetticher, av478(at)cam.ac.uk
(End) A. von Boetticher [Cavendish Laboratory], P. Vannier [CDS] 27-Jun-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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