374 citations · 2.7k across the 43 of their papers we have counts for
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Unidentified species in envelopes around carbon stars
Biwei Jiang, Aigen Li, Ke Zhang +3
The infrared (IR) spectra of many evolved carbon-rich stars exhibit two prominent dust emission features peaking around 21um and 30um, with the former exclusively seen in proto-pla…
An Old Disk That Can Still Form a Planetary System
Edwin A. Bergin, L. Ilsedore Cleeves, Uma Gorti +11
From the masses of planets orbiting our Sun, and relative elemental abundances, it is estimated that at birth our Solar System required a minimum disk mass of ~0.01 solar masses wi…
Evidence for a Snow Line Beyond the Transitional Radius in the TW Hya Protoplanetary Disk
K. Zhang, K. M. Pontoppidan, C. Salyk +1
We present an observational reconstruction of the radial water vapor content near the surface of the TW Hya transitional protoplanetary disk, and report the first localization of t…
Secular Orbital Evolution of Compact Planet Systems
Ke Zhang, Douglas P. Hamilton, Soko Matsumura
Recent observations have shown that at least some close-in exoplanets maintain eccentric orbits despite tidal circularization timescales that are typically shorter than stellar age…
Crystalline Silicates in Evolved Stars. I. Spitzer/IRS Spectroscopy of IRAS16456-3542, 18354-0638, and 23239+5754
B. W. Jiang, Ke Zhang, Aigen Li +1
We report the Spitzer Infrared Spectrograph (IRS) observations of three evolved stars: IRAS 16456-3542, 18354-0638, and 23239+5754. The 9.9--37.2um Spitzer/IRS high resolution spec…