The Anglo-Australian Planet Search. XXIII. Two New Jupiter Analogs

Abstract

We report the discovery of two long-period giant planets from the Anglo-Australian Planet Search. HD 154857c is in a multiple-planet system, while HD 114613b appears to be solitary. HD 114613b has an orbital period P=10.5 years, and a minimum mass m sin i of 0.48 Jupiter masses; HD 154857c has P=9.5 years and m sin i=2.6 Jupiter masses. These new data confirm the planetary nature of the previously unconstrained long-period object in the HD 154857 system. We have performed detailed dynamical stability simulations which show that the HD 154857 two-planet system is stable on timescales of at least 100 million years. These results highlight the continued importance of "legacy" surveys with long observational baselines; these ongoing campaigns are critical for determining the population of Jupiter analogs, and hence of those planetary systems with architectures most like our own Solar system.

Accepted for publication in ApJ

References in corpus (14)

• The generalised Lomb-Scargle periodogram. A new formalism for the floating-mean and Keplerian periodograms
• New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey
• Spectroscopic parameters for 451 stars in the HARPS GTO planet search program. Stellar [Fe/H] and the frequency of exo-Neptunes
• Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 parsecs: The Southern Sample
• Structure and Evolution of Nearby Stars with Planets II. Physical Properties of ~1000 Cool Stars from the SPOCS Catalog
• Radial velocity planets de-aliased. A new, short period for Super-Earth 55 Cnc e
• Search for Associations Containing Young stars (SACY): I. Sample & Searching Method
• Detection Limits from the McDonald Observatory Planet Search Program
• Stellar Parameters and Metallicities of Stars Hosting Jovian and Neptunian Mass Planets: A Possible Dependence of Planetary Mass on Metallicity
• An Activity Catalogue of Southern Stars
• Long-Period Objects in the Extrasolar Planetary Systems 47 UMa and 14 Her
• A Jupiter-like Planet Orbiting the Nearby M Dwarf GJ832
• Jupiter - friend or foe? I: the asteroids
• On the HU Aquarii planetary system hypothesis

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