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J/A+A/597/A108      GJ 536 HARPS and HARPS-N data      (Suarez Mascareno+, 2017)

A super-Earth orbiting the nearby M-dwarf GJ 536. Suarez Mascareno A., Gonzalez Hernandez J.I., Rebolo R., Astudillo-Defru N., Bonfils X., Bouchy F., Delfosse X., Forveille T., Lovis C., Mayor M., Murgas F., Pepe F., Santos N.C., Udry S., Wunsche A., Velasco S. <Astron. Astrophys. 597, A108 (2017)> =2017A&A...597A.108S (SIMBAD/NED BibCode)
ADC_Keywords: Stars, dwarfs ; Stars, double and multiple ; Planets ; Radial velocities Keywords: techniques: radial velocity - stars: rotation - planets and satellites: terrestrial planets - stars: individual: GJ 536 - stars: activity - planets and satellites: general Abstract: We report the discovery of a super-Earth orbiting the star GJ 536 based on the analysis of the radial-velocity time series from the HARPS and HARPS-N spectrographs. GJ 536 b is a planet with a minimum mass Msini of 5.36±0.69M with an orbital period of 8.7076±0.0025 days at a distance of 0.066610(13) AU, and an orbit that is consistent with circular. The host star is the moderately quiet M1 V star GJ 536, located at 10 pc from the Sun. We find the presence of a second signal at 43 days that we relate to stellar rotation after analysing the time series of Ca II H&K and Halpha spectroscopic indicators and photometric data from the ASAS archive. We find no evidence linking the short period signal to any activity proxy. We also tentatively derived a stellar magnetic cycle of less than 3 years. Description: The star GJ 536 is part of the Bonfils et al. (2013, Cat. J/A+A/549/A109) sample and has been extensively monitored since mid-2004. We have used 146 HARPS spectra taken over 11.7 yr along with 12 HARPS-N spectra taken during April and May 2016. HARPS (Mayor et al., 2003Msngr.114...20M) and HARPS-N (Cosentino et al. 2012, in Ground-based and Airborne Instrumentation for Astronomy IV, SPIE, 8446, 84461) are two fibre-fed high-resolution echelle spectrographs installed at the 3.6m ESO telescope in La Silla Observatory (Chile) and at the Telescopio Nazionale Galileo in the Roque de los Muchachos Observatory (Spain), respectively. Objects: ------------------------------------------------ RA (2000) DE Designation(s) ------------------------------------------------ 14 01 03.19 -02 39 17.5 GJ 536 = HD 122303 ------------------------------------------------ File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table5.dat 84 158 HARPS & HAPRS-N data
See also: J/A+A/549/A109 : HARPS XXXI. The M-dwarf sample (Bonfils+, 2013) Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 9 F9.4 d JD Julian date (JD-2450000) 11- 21 F11.4 m/s RV Radial velocity 23- 28 F6.4 m/s e_RV Radial velocity uncertainty 30- 38 F9.4 m/s FWHM FWHM of the CCF 40- 47 F8.4 m/s Span Bisector span velocity 49- 54 F6.4 [-] Smw Mount Wilson S index 56- 61 F6.4 [-] e_Smw Mount Wilson S index uncertainty 63- 68 F6.4 [-] Ha Halpha index 70- 75 F6.4 [-] e_Ha Halpha index uncertainty 77- 84 A8 [-] Flag Special considerations
Acknowledgements: Alejandro Suarez Mascareno, asm(at)
(End) Patricia Vannier [CDS] 15-Nov-2016
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