2011ApJ...730...10H


Query : 2011ApJ...730...10H

2011ApJ...730...10H - Astrophys. J., 730, 10 (2011/March-3)

The NASA-UC Eta-Earth program. III. A super-Earth orbiting HD 97658 and a neptune-mass planet orbiting GL 785.

HOWARD A.W., JOHNSON J.A., MARCY G.W., FISCHER D.A., WRIGHT J.T., HENRY G.W., ISAACSON H., VALENTI J.A., ANDERSON J. and PISKUNOV N.E.

Abstract (from CDS):

We report the discovery of planets orbiting two bright, nearby early K dwarf stars, HD 97658 and Gl 785. These planets were detected by Keplerian modeling of radial velocities measured with Keck-HIRES for the NASA-UC Eta-Earth Survey. HD 97658 b is a close-in super-Earth with minimum mass Msin i = 8.2 ±1.2 M, orbital period P = 9.494±0.005 days, and an orbit that is consistent with circular. Gl 785 b is a Neptune-mass planet with Msin i = 21.6±2.0 M, P = 74.39±0.12 days, and orbital eccentricity e = 0.30±0.09. Photometric observations with the T12 0.8 m automatic photometric telescope at Fairborn Observatory show that HD 97658 is photometrically constant at the radial velocity period to 0.09 mmag, supporting the existence of the planet.

Abstract Copyright:

Journal keyword(s): planetary systems - stars: individual (HD 97658, Gl 785) - techniques: radial velocities

Simbad objects: 7

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Number of rows : 7
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 HD 97658 PM* 11 14 33.1612754184 +25 42 37.390358520 9.049 8.569 7.714 7.259 6.835 K1V 183 1
2 HD 97658b Pl 11 14 33.1612754184 +25 42 37.390358520           ~ 212 1
3 HD 99518 PM* 11 27 08.9930112528 +25 01 40.085655132   8.03 7.73     F0 26 0
4 HAT-P-26b Pl 14 12 37.5331103311 +04 03 36.116569918           ~ 162 1
5 BD+47 2936b Pl 19 50 50.2472976936 +48 04 51.101390496           ~ 416 1
6 HD 192310 PM* 20 15 17.3913760474 -27 01 58.711625384   6.63 5.723 5.98 8.74 K2+V 319 1
7 HD 192310b Pl 20 15 17.3913760474 -27 01 58.711625384           ~ 34 1

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