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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/27930
Title: HADES RV Programme with HARPS-N at TNG. V. A super-Earth on the inner edge of the habitable zone of the nearby M dwarf GJ 625
Authors: Suárez Mascareño, A.
González Hernández, J. I.
Rebolo, R.
Velasco, S.
Toledo-Padrón, B.
AFFER, Laura 
Perger, M.
MICELA, Giuseppina 
Ribas, I.
MALDONADO PRADO, Jesus 
LETO, Giuseppe 
Zanmar Sanchez, R.
SCANDARIATO, GAETANO 
Damasso, M.
SOZZETTI, Alessandro 
Esposito, M.
COVINO, Elvira 
MAGGIO, Antonio 
LANZA, Antonino Francesco 
DESIDERA, Silvano 
Rosich, A.
BIGNAMINI, ANDREA 
CLAUDI, Riccardo 
BENATTI, SERENA 
BORSA, Francesco 
Pedani, M.
MOLINARI, Emilio Carlo 
Morales, J. C.
Herrero, E.
Lafarga, M.
Issue Date: 2017
Journal: ASTRONOMY & ASTROPHYSICS 
Number: 605
First Page: A92
Abstract: We report the discovery of a super-Earth orbiting at the inner edge of the habitable zone of the star GJ 625 based on the analysis of the radial-velocity (RV) time series from the HARPS-N spectrograph, consisting of 151 HARPS-N measurements taken over 3.5 yr. GJ 625 b is a planet with a minimum mass Msini of 2.82 ± 0.51 M⊕ with an orbital period of 14.628 ± 0.013 days at a distance of 0.078 AU from its parent star. The host star is the quiet M2 V star GJ 625, located at 6.5 pc from the Sun. We find the presence of a second radial-velocity signal in the range 74-85 days that we relate to the stellar rotation after analyzing the time series of Ca II H&K and Hα spectroscopic indicators, the variations of the FWHM of the CCF, and the APT2 photometric light curves. We find no evidence linking the short-period radial-velocity signal to any activity proxy. Based on observations made with the Italian Telescopio Nazionale Galileo (TNG), operated on the island of La Palma by the INAF - Fundación Galileo Galilei at the Roche de Los Muchachos Observatory of the Instituto de Astrofísica de Canarias (IAC); photometric observations made with the robotic telescope APT2 (within the EXORAP program) located at Serra La Nave on Mt. Etna; and lucky imaging observations made with the Telescopio Carlos Sánchez operated on the island of Tenerife by the Instituto de Astrofísica de Canarias in the Spanish Observatorio del Teide.Tables A.1-A.5 are only available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (<A href="http://130.79.128.5">http://130.79.128.5</A>) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/605/A92">http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/605/A92
URI: http://hdl.handle.net/20.500.12386/27930
URL: https://www.aanda.org/articles/aa/abs/2017/09/aa30957-17/aa30957-17.html
ISSN: 0004-6361
DOI: 10.1051/0004-6361/201730957
Bibcode ADS: 2017A&A...605A..92S
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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