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Planet formation around stars of various masses: The snow line and the frequency of giant planets
Grant M. Kennedy, Scott J. Kenyon
We use a semi-analytic circumstellar disk model that considers movement of the snow line through evolution of accretion and the central star to investigate how gas giant frequency…
Discovery of Gas Accretion Onto Stars in 13 Myr old h and chi Persei
Thayne Currie, Scott Kenyon, Zoltan Balog +2
We report the discovery of accretion disks associated with ~ 13 Myr-old intermediate/low-mass stars in h and chi Persei. Optical spectroscopy of ~ 5000 stars in these clusters and…
The Rise and Fall of Debris Disks: MIPS Observations of h and chi Persei and the Evolution of Mid-IR Emission from Planet Formation
Thayne Currie, Scott Kenyon, Zoltan Balog +3
We describe Spitzer/MIPS observations of the double cluster, h and Persei, covering a 0.6 square-degree area surrounding the cores of both clusters. The data are combine…
Terrestrial Zone Debris Disk Candidates in h and chi Persei
Thayne Currie, Scott J. Kenyon, George Rieke +2
We analyze 8 sources with strong mid-infrared excesses in the 13 Myr-old double cluster h and chi Persei. New optical spectra and broadband SEDs (0.36-8 mu_m) are consistent with c…
Formation and Collisional Evolution of Kuiper Belt Objects
Scott J. Kenyon, Benjamin C. Bromley, David P. O'Brien +1
This chapter summarizes analytic theory and numerical calculations for the formation and collisional evolution of KBOs at 20--150 AU. We describe the main predictions of a baseline…
Spitzer/IRAC and JHKs Observations of h & chi Persei: Constraints on Protoplanetary Disk and Massive Cluster Evolution at ~ 10^{7} yr
Thayne Currie, Zoltan Balog, S. J. Kenyon +12
We describe IRAC 3.6-8 mu_m observations and ground-based near-IR JHKs photometry from Mimir and 2MASS of the massive double cluster h & chi Persei complete to J=15.5 (M ~ 1.3 Msun…