2025RNAAS...9...42C

Query : 2025RNAAS...9...42C

2025RNAAS...9...42C - Research Notes of the AAS, 9, 42 (2025/February-0)

Validation of Two Earth-mass Planets Orbiting GJ 1002.

CASTRO NIEVA P.A., DODSON-ROBINSON S. and RAMIREZ DELGADO V.

Abstract (from CDS):

GJ 1002 is reported to host two Earth-mass planets in the habitable zone. We applied frequency-domain techniques for validating planet discoveries to the ESPRESSO and CARMENES radial velocity (RV) and cross-correlation full width at half maximum time series. Siegel's test applied to Welch's power spectrum estimates suggests that periodicity in the RV time series may not be statistically significant. The frequency response to a sinusoid with the frequency of planet b, or pseudowindow, shows excess power near the frequency of planet c. Finally, a Monte Carlo experiment where we create new RV time series realizations by adding white noise to original data reveals that the highest periodogram peak sometimes occurs at half the frequency of planet c. More extreme-precision observations are required to confirm RV oscillations and constrain the rotation period.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Period search - Stellar activity - Stellar rotation - Radial velocity - Time series analysis

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 G 158-27 PM* 00 06 43.1973190107 -07 32 17.019101068     13.837 13.605 10.15 M5.5V 257 0

Query : 2025RNAAS...9...42C

Basic data :
G 158-27 -- High Proper Motion Star
Other object types: otypes_help 		* (2015ApJS,CNS5,...), PM* (2016ApJ,LHS,...), V* (NSV), NIR (2MASS), MIR (WISEA)
ICRS coord. (ep=J2000) : 		00 06 43.1973190107 -07 32 17.019101068 (Optical) [ 0.0445 0.0315 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		00 04 12.3766266536 -07 47 24.428620064 [ 0.0445 0.0315 90 ]
Gal coord. (ep=J2000) : 		092.4632878301376 -67.7246605502842 [ 0.0445 0.0315 90 ]
Proper motions mas/yr : 		-811.566 -1893.251 [0.064 0.034 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -33.7 [3.8] / z(~) -0.000112 [0.000013] / cz -33.70 [3.80]
   (NIR) C 2012AJ....144...99D
Parallaxes (mas): 		206.3500 [0.0474] A 2020yCat.1350....0G
Spectral type: 		M5.5V C 1983SAAOC...7..106W
Fluxes (10) :
V 13.837 [0.03] D 2012yCat.1322....0Z
R 13.605 [0.07] D 2012yCat.1322....0Z
G 11.773832 [0.002836] C 2020yCat.1350....0G
I 10.15 [~] D 2008MNRAS.389..585C
J 8.323 [0.019] C 2003yCat.2246....0C
H 7.792 [0.034] C 2003yCat.2246....0C
K 7.439 [0.021] C 2003yCat.2246....0C
g 14.637 [0.01] D 2012yCat.1322....0Z
r 13.157 [0.01] D 2012yCat.1322....0Z
i 11.042 [0.07] D 2012yCat.1322....0Z
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 4 		Display criteria :

Identifiers (25) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

LHS 2 JP11 5942 PLX 9.01 Zkh 3
CNS5 28 Karmn J00067-075 PM 00042-0747 [RHG95] 19
FBS L 10-3 2MASS J00064325-0732147 TIC 176287658 Gaia DR3 2441630500517079808
FBS 0004-077 NLTT 248 UBV M 53816 Gaia DR2 2441630500517079808
GEN# +9.80158027 NSV 15022 UCAC4 413-000170
G 158-27 8pc 213.00 USNO 210
GJ 1002 PLX 9.0 WISEA J000642.61-073237.0

References (257 between 1850 and 2026) (Total 257)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 4    Distance : 2    Var : 1    Rot : 1    Fe/H : 29    Plx : 4    PM : 8    SpT : 13   

   

Observing logs
Herschel : 2    ISO : 2   

   

External archives :

Link by name to the catalogue in VizieR :

LHS 2 FBS L 10-3 FBS 0004-077 G 158-27 GJ 1002
2MASS J00064325-0732147 NLTT 248 NSV 15022 UCAC4 413-000170 WISEA J000642.61-073237.0
Gaia DR3 2441630500517079808 Gaia DR2 2441630500517079808

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