2017A&A...605A..92S

Query : 2017A&A...605A..92S

2017A&A...605A..92S - Astronomy and Astrophysics, volume 605A, 92-92 (2017/9-1)

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.

SUAREZ MASCARENO A., GONZALEZ HERNANDEZ J.I., REBOLO R., VELASCO S., TOLEDO-PADRON B., AFFER L., PERGER M., MICELA G., RIBAS I., MALDONADO J., LETO G., ZANMAR SANCHEZ R., SCANDARIATO G., DAMASSO M., SOZZETTI A., ESPOSITO M., COVINO E., MAGGIO A., LANZA A.F., DESIDERA S., ROSICH A., BIGNAMINI A., CLAUDI R., BENATTI S., BORSA F., PEDANI M., MOLINARI E., MORALES J.C., HERRERO E. and LAFARGA M.

Abstract (from CDS):

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 3.5yr. GJ 625 b is a planet with a minimum mass Msini of 2.82±0.51M⊕ with an orbital period of 14.628±0.013 days at a distance of 0.078AU from its parent star. The host star is the quiet M2 V star GJ 625, located at 6.5pc from the Sun. We find the presence of a second radial-velocity signal in the range 74-85 days that we relate to stellar rotation after analysing 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.

Abstract Copyright: © ESO, 2017

Journal keyword(s): planetary systems - techniques: radial velocities - stars: activity - stars: chromospheres - stars: individual: GJ 625 - planets and satellites: detection - planets and satellites: detection

VizieR on-line data: <Available at CDS (J/A+A/605/A92): table1.dat table2.dat table3.dat table4.dat table5.dat>

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 GJ 3942 b Pl 16 09 03.1407662856 +52 56 37.956748812           ~ 12 0
2 NAME G 202-48b Pl 16 25 24.6230388531 +54 18 14.765465640           ~ 17 0
3 G 202-48 PM* 16 25 24.6230388531 +54 18 14.765465640   11.78 10.07 9.66   M1.5V 207 0
4 BD+11 3149b Pl 17 16 00.6368683489 +11 03 27.615757436           ~ 14 0
5 BD+11 3149 PM* 17 16 00.6368683489 +11 03 27.615757436 13.521 12.338 10.828 9.858 8.767 M1V 72 0
6 BD+11 3149c Pl 17 16 00.6368683489 +11 03 27.615757436           ~ 15 0

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