2015ApJ...803....8H


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.22CEST04:39:18

2015ApJ...803....8H - Astrophys. J., 803, 8 (2015/April-2)

Refined properties of the HD 130322 planetary system.

HINKEL N.R., KANE S.R., HENRY G.W., FENG Y.K., BOYAJIAN T., WRIGHT J., FISCHER D.A. and HOWARD A.W.

Abstract (from CDS):

Exoplanetary systems closest to the Sun, with the brightest host stars, provide the most favorable opportunities for characterization studies of the host star and their planet(s). The Transit Ephemeris Refinement and Monitoring Survey uses both new radial velocity (RV) measurements and photometry in order to greatly improve planetary orbit uncertainties and the fundamental properties of the star, in this case HD 130322. The only companion, HD 130322b, orbits in a relatively circular orbit, e = 0.029 every ∼10.7 days. We have compiled RV measurements from multiple sources, including 12 unpublished from the Keck I telescope, over the course of ∼14 yr and have reduced the uncertainty in the transit midpoint to ∼2 hr. The transit probability for the b-companion is 4.7%, where Mpsin i = 1.15 MJ and a = 0.0925 AU. In this paper, we compile photometric data from the T11 0.8 m Automated Photoelectric Telescope at Fairborn Observatory taken over ∼14 yr, including the constrained transit window, which results in a dispositive null result for both full transit exclusion of HD 130322b to a depth of 0.017 mag and grazing transit exclusion to a depth of ∼0.001 mag. Our analysis of the starspot activity via the photometric data reveals a highly accurate stellar rotation period: 26.53±0.70 days. In addition, the brightness of the host with respect to the comparison stars is anti-correlated with the Ca ii H and K indices, typical for a young solar-type star.

Abstract Copyright:

Journal keyword(s): planetary systems - stars: individual: HD 130322 - techniques: photometric - techniques: radial velocities

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 - 2019
#notes
1 HD 129755 PM* 14 44 30.5949672043 -03 21 47.938833836   7.96 7.58     F0V 22 0
2 HD 130322b Pl 14 47 32.7265637197 -00 16 53.305928889           ~ 54 1
3 HD 130322 PM* 14 47 32.7265637197 -00 16 53.305928889   8.82 8.04     K0V 224 1
4 HD 130557 * 14 48 54.0940797484 -00 50 51.574386719   6.105 6.136     A0IV 63 0
5 HD 132932 * 15 01 43.9441191372 +00 42 53.364824586   8.16 7.73     F3V 10 0
6 HD 154345 PM* 17 02 36.4039047898 +47 04 54.762678953   7.50   6.3   G9 223 1

    Equat.    Gal    SGal    Ecl

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2019.10.22-04:39:18

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