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J/A+A/612/A95       K2-141 b radial velocity and light curve   (Barragan+, 2018)

K2-141 b: a 5-MEarth super-Earth Transiting a K7 V star every 6.7 h. Barragan O., Gandolfi D., Dai F., Livingston J., Persson C.M., Hirano T., Narita N., Csizmadia Sz., Winn J.N., Nespral D., Prieto-Arranz J., Smith A.M.S., Nowak G., Albrecht S., Antoniciello G., Bo Justesen A., Cabrera J., Cochran W.D., Deeg H.., Eigmuller P., Endl M., Erikson A., Fridlund M., Fukui A., Grziwa S., Guenther E., Hatzes A.P., Hidalgo D., Johnson M.C., Korth J., Palle E., Patzold M., Rauer H., Tanaka Y., Van Eylen V. <Astron. Astrophys. 612, A95 (2018)> =2018A&A...612A..95B (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Stars, K-type ; Planets ; Photometry ; Radial velocities Keywords: planetary systems - planets and satellites: individual: EPIC 246393474 b - stars: fundamental parameters - stars: individual: EPIC 246393474 - techniques: photometric - techniques: radial velocities Abstract: We report on the discovery of K2-141 b (EPIC 246393474 b), an ultra-short-period super-Earth on a 6.7-hour orbit transiting an active K7 V star based on data from K2 campaign 12. We confirmed the planet's existence and measured its mass with a series of follow-up observations: seeing-limited MuSCAT imaging, NESSI high-resolution speckle observations, and FIES and HARPS high-precision radial-velocity monitoring. K2-141 b has a mass of 5.31±0.46M and radius of 1.54+0.10-0.09R, yielding a mean density of 8.00+1.83-1.45g/cm3 and suggesting a rocky-iron composition. Models indicate that iron cannot exceed ∼70% of the total mass. With an orbital period of only 6.7 hours, K2-141 b is the shortest-period planet known to date with a precisely determined mass. Description: Light curve and radial velocities for K2-141 (EPIC 246393474). Light curve comes from campaing 12 of the extended Kepler mission, K2. Radial velocity data was obtained with HARPS at th3 3.6m telescope, ESO. FIES data comes from observations at the Nordic Optical Telescope (NOT). Objects: ----------------------------------------------------------- RA (2000) DE Designation(s) ----------------------------------------------------------- 23 23 39.97 -01 11 21.4 K2-141 = 2MASS J23233996-0111215 ----------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file rvharps.dat 62 25 HARPS RV measurements rvfies.dat 36 9 FIES RV measurements lck2.dat 26 3353 K2 data
Byte-by-byte Description of file: rvharps.dat
Bytes Format Units Label Explanations
1- 11 F11.6 d BJD Time (BJD-2450000) 13- 19 F7.4 km/s RV Radial velocity 21- 26 F6.4 km/s e_RV Radial velocity error 28- 33 F6.4 km/s BIS Bisector 35- 40 F6.4 km/s FWHM Full Width Half Maximum 42- 46 F5.3 --- S S-index 48- 52 F5.3 --- e_S S-index error 54- 57 I4 s Texp Exposure time 59- 62 F4.1 --- SN Signal-to-Noise at 5500Å
Byte-by-byte Description of file: rvfies.dat
Bytes Format Units Label Explanations
1- 11 F11.6 d BJD Time (BJD-2450000) 13- 19 F7.4 km/s RV Radial velocity 21- 26 F6.4 km/s e_RV Radial velocity error 28- 31 I4 s Texp Exposure time 33- 36 F4.1 --- SN Signal-to-Noise at 5500Å
Byte-by-byte Description of file: lck2.dat
Bytes Format Units Label Explanations
1- 14 F14.9 d BJD Time (BJD-2450000) 16- 26 F11.9 --- Flux Normalized stellar flux
Acknowledgements: Oscar Barragan, oscaribv(at)gmail.com
(End) Oscar Barragan [UniTo, Italy], Patricia Vannier [CDS] 22-Jan-2018
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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