Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-05-14
Astronomy and Astrophysics
Astrophysics
Revised version, 10 pages with low resolution figures suitable for arXiv, accepted to MNRAS. The manuscript with full resoluti
Scientific paper
10.1111/j.1365-2966.2008.12920.x
Precision radial velocity (RV) measurements of the Sun-like dwarf 14 Herculis published by Naef et. al (2004), Butler et. al (2006) and Wittenmyer et al (2007) reveal a Jovian planet in a 1760 day orbit and a trend indicating the second distant object. On the grounds of dynamical considerations, we test a hypothesis that the trend can be explained by the presence of an additional giant planet. We derive dynamical limits to th orbital parameters of the putative outer Jovian companion in an orbit within ~13 AU. In this case, the mutual interactions between the Jovian planets are important for the long-term stability of the system. The best self-consistent and stable Newtonian fit to an edge-on configuration of Jovian planets has the outer planet in 9 AU orbit with a moderate eccentricity ~0.2 and confined to a zone spanned by the low-order mean motion resonances 5:1 and 6:1. This solution lies in a shallow minimum of \Chi and persists over a wide range of the system inclination. Other stable configurations within 1\sigma confidence interval of the best fit are possible for the semi-major axis of the outer planet in the range of (6,13) AU and the eccentricity in the range of (0,0.3). The orbital inclination cannot yet be determined but when it decreases, both planetary masses approach ~10 Jupiter masses and for ~30 deg the hierarchy of the masses is reversed.
Gozdziewski Krzysztof
Konacki Maciej
Migaszewski Cezary
No associations
LandOfFree
A dynamical analysis of the 14 Her planetary system does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A dynamical analysis of the 14 Her planetary system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A dynamical analysis of the 14 Her planetary system will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-365251