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Extrasolar planet population synthesis. Ii. Statistical comparison with observations. Astron. Astrophys.
| Content Provider | CiteSeerX |
|---|---|
| Author | Mordasini, Christoph Alibert, Yann Benz, Willy Naef, Dominique |
| Abstract | Context. This is the second paper in a series of papers showing the results of extrasolar planet population synthesis calculations using our extended core accretion model. In the companion paper (Paper I), we have presented in detail the methods we use. In subsequent papers, we shall discuss the effect of the host star’s mass on the planetary population and the influence of various properties of protoplanetary disks. Aims. In this second paper, we focus on planets orbiting solar-like stars. The goal is to use the main characteristics of the actually observed extrasolar planet population to derive in a statistical manner constraints on the planet formation models. Methods. Drawing initial conditions for our models at random from probability distributions derived as closely as possible from observations, we synthesize a number of planetary populations. By applying an observational detection bias appropriate for radial velocity surveys, we identify the potentially detectable synthetic planets. The properties of these planets are compared in quantitative statistical tests with the properties of a carefully selected sub-population of actually observed extrasolar planets. Results. We use a two dimensional Kolmogorov-Smirnov test to compare the mass-distance distributions of synthetic and observed planets, as well as the one dimensional version of the test to compare the M sin i, the semimajor axis and the [Fe/H] distribution. We find that while many combinations of parameters lead to unacceptable distributions, a number of models can account to a reasonable degree of statistical significance for most of the properties of the observed sample. We concurrently account for many other observed |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Statistical Comparison Extrasolar Planet Population Synthesis Planetary Population Second Paper Protoplanetary Disk Extrasolar Planet Quantitative Statistical Test Observational Detection Bias Appropriate Statistical Significance Solar-like Star Many Combination Various Property Main Characteristic Dimensional Version Observed Sample Host Star Mass Mass-distance Distribution Extrasolar Planet Population Synthesis Calculation Companion Paper Reasonable Degree Observed Extrasolar Planet Population Initial Condition Core Accretion Model Unacceptable Distribution Subsequent Paper Radial Velocity Survey Semimajor Axis Probability Distribution Fe Distribution Planet Formation Model Statistical Manner Constraint Observed Planet Detectable Synthetic Planet Dimensional Kolmogorov-smirnov Test |
| Content Type | Text |
