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Transitional and Pre-Transitional disks: Gap Opening by Multiple Planets?
Zhaohuan Zhu, Richard P. Nelson, Lee Hartmann +2
We use 2D hydrodynamic simulations of viscous disks to examine whether dynamically-interacting multiple giant planets can explain the large gaps (spanning over one order of magnitu…
A Spitzer IRS Study of Infrared Variability in Transitional and Pre-Transitional Disks around T Tauri Stars
C. Espaillat, E. Furlan, P. D'Alessio +5
We present a Spitzer IRS study of variability in 14 T Tauri stars in the Taurus and Chamaeleon star-forming regions. The sample is composed of transitional and pre-transitional obj…
Disk Imaging Survey of Chemistry with SMA (DISCS): I. Taurus Protoplanetary Disk Data
Karin I. Oberg, Chunhua Qi, Jeffrey K. J. Fogel +5
Chemistry plays an important role in the structure and evolution of protoplanetary disks, with implications for the composition of comets and planets. This is the first of a series…
Wall emission in circumbinary disks: the case of CoKu Tau/4
Erick Nagel, Paola D'Alessio, Nuria Calvet +4
A few years ago, the mid-IR spectrum of a Weak Line T Tauri Star, CoKu Tau/4, was explained as emission from the inner wall of a circumstellar disk, with the inner disk truncated a…
Unveiling the Structure of Pre-Transitional Disks
C. Espaillat, P. D'Alessio, J. Hernández +6
In the past few years, several disks with inner holes that are empty of small dust grains have been detected and are known as transitional disks. Recently, Spitzer has identified a…