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 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 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:
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RA (2000) DE Designation(s)
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14 01 03.19 -02 39 17.5 GJ 536 = HD 122303
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 84 158 HARPS & HAPRS-N data
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See also:
J/A+A/549/A109 : HARPS XXXI. The M-dwarf sample (Bonfils+, 2013)
Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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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
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Acknowledgements:
Alejandro Suarez Mascareno, asm(at)iac.es
(End) Patricia Vannier [CDS] 15-Nov-2016