Narrow-Angle Astrometry with the Space Interferometry Mission: The Search for Extra-Solar Planets. II. Detection and Characterization of Planetary Systems

Abstract

(Abridged) The probability of detecting additional companions is essentially unchanged with respect to the single-planet configurations, but after fitting and subtraction of orbits with astrometric signal-to-noise ratio $\alpha /{\sigma }_d\to 1$ the false detection rates can be enhanced by up to a factor 2; the periodogram approach results in robust multiple-planet detection for systems with periods shorter than the SIM mission length, even at low values of $\alpha /{\sigma }_d$, while the least squares technique combined with Fourier series expansions is arguably preferable in the long-period regime. The accuracy on multiple-planet orbit reconstruction and mass determination suffers a typical degradation of 30-40% with respect to single-planet solutions; mass and orbital inclination can be measured to better than 10% for periods as short as 0.1 yr, and for $\alpha /{\sigma }_d$ as low as $\sim 5$, while $\alpha /{\sigma }_d\simeq 100$ is required in order to measure with similar accuracy systems harboring objects with periods as long as three times the mission duration. For systems with all components producing $\alpha /{\sigma }_d\simeq 10$ or greater, quasi-coplanarity can be reliably established with uncertainties of a few degrees, for periods in the range $0.1\le T\le 15$ yr; in systems where at least one component has $\alpha /{\sigma }_d\to 1$, coplanarity measurements are compromised, with typical uncertainties on the mutual inclinations of order of $30^{\circ }-40^{\circ }$. Our findings are illustrative of the importance of the contribution SIM will make to the fields of formation and evolution of planetary systems.

arXiv comment61 pages, 14 figures, 5 tables, to appear in the September 2003 Issue of the Publications of the Astronomical Society of the Pacific

References in corpus (35)

• Detection of Planetary Transits Across a Sun-like Star
• Detection of an Extrasolar Planet Atmosphere
• GAIA: Composition, Formation and Evolution of the Galaxy
• The Lick Planet Search: Detectability and Mass Thresholds
• The Spectroscopic Orbit of the Planetary Companion Transiting HD209458
• Formation of giant planets by fragmentation of protoplanetary disks
• The Palomar Testbed Interferometer
• Short-Term Dynamical Interactions Among Extrasolar Planets
• A Mass for the Extrasolar Planet Gl 876b Determined from Hubble Space Telescope Fine Guidance Sensor 3 Astrometry and High-Precision Radial Velocities
• A Planet at 5 AU Around 55 Cancri
• On disc driven inward migration of resonantly coupled planets with application to the system around GJ876
• Dynamical Habitability of Known Extrasolar Planetary Systems
• The CORALIE survey for southern extra-solar planets VIII. The very low-mass companions of HD141937, HD162020, HD168443, HD202206: brown dwarfs or superplanets?
• Re-processing the Hipparcos Transit Data and Intermediate Astrometric Data of spectroscopic binaries. I. Ba, CH and Tc-poor S stars
• Extra-solar planets around HD196050, HD216437 and HD160691
• Possible Commensurabilities Among Pairs of Extrasolar Planets
• The Dynamical Simulations of the Planets Orbiting GJ 876
• Apsidal Alignment in Upsilon Andromedae
• Could the 55 Cancri Planetary System Really Be in the 3:1 Mean Motion Resonance?
• The Upsilon Andromedae System: Models and Stability
• Eccentricity Excitation and Apsidal Resonance Capture in the Planetary System Upsilon Andromedae
• A Dynamical Analysis of the 47 UMa Planetary System
• Space-borne global astrometric surveys: the hunt for extra-solar planets
• The range of masses and periods explored by radial velocity searches for planetary companions
• Eccentricity Evolution of Extrasolar Multiple Planetary Systems due to the Depletion of Nascent Protostellar Disks
• Detection and measurement of planetary systems with GAIA
• Sensitivity of the Radial Velocity Technique in Detecting Outer Planets
• Detecting Outer Planets in Edge-On Orbits: Combining Radial Velocity and Astrometric Techniques
• The Janus head of the HD 12661 planetary system
• A Statistical Examination of the Short Term Stability of the Upsilon Andromedae System
• Precise Masses for Wolf 1062 AB from Hubble Space Telescope Interferometric Astrometry and McDonald Observatory Radial Velocities
• Sensitivity of the Astrometric Technique in Detecting Outer Planets
• Global dynamics and stability limits for planetary systems around HD 12661, HD 38529, HD 37124 and HD 160691
• The Planetary System of Upsilon Andromedae
• Narrow-Angle Astrometry with the Space Interferometry Mission: The Search for Extra-solar Planets. I. Detection and Characterization of Single Planets

Cited by in corpus (13)

• DHP Framework: Digital Health Passports Using Blockchain -- Use case on international tourism during the COVID-19 pandemic
• On detecting terrestrial planets with timing of giant planet transits
• Taking the Measure of the Universe: Precision Astrometry with SIM PlanetQuest
• Double-blind test program for astrometric planet detection with Gaia
• Astrometric Methods and Instrumentation to Identify and Characterize Extrasolar Planets: A Review
• On the Possible Correlation Between the Orbital Periods of Extra-solar Planets and the Metallicity of the Host Stars
• Astrometric Detection of Terrestrial Planets in the Habitable Zones of Nearby Stars with SIM PlanetQuest
• The Effects of Multiple Companions on the Efficiency of the SIM Planet Searches
• Simulation and analysis of sub-μas precision astrometric data for planet-finding
• Detection of Periodicity Based on Independence Tests - III. Phase Distance Correlation Periodogram
• Astrometric effects of solar-like magnetic activity in late-type stars and their relevance for the detection of extrasolar planets
• SIM PlanetQuest Key Project Precursor Observations to Detect Gas Giant Planets Around Young Stars
• Choice of Observing Schedules for Astrometric Planet Searches