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139 papers · 1 filter
Polycyclic Aromatic Hydrocarbon in Protoplanetary Disks around Herbig Ae/Be and T Tauri Stars
Ji Yeon Seok, Aigen Li
A distinct set of broad emission features at 3.3, 6.2, 7.7, 8.6, 11.3, and 12.7 m, is often detected in protoplanetary disks (PPDs). These features are commonly attributed to po…
On the Silicate Crystallinities of Oxygen-Rich Evolved Stars and Their Mass Loss Rates
Jiaming Liu, Biwei Jiang, Aigen Li +1
For decades ever since the early detection in the 1990s of the emission spectral features of crystalline silicates in oxygen-rich evolved stars, there is a long-standing debate on…
CANDELS Multiwavelength Catalogs: Source Identification and Photometry in the CANDELS COSMOS Survey Field
H. Nayyeri, S. Hemmati, B. Mobasher +36
We present a multi-wavelength photometric catalog in the COSMOS field as part of the observations by the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS). T…
Inertial Chow rings of toric stacks
Thomas Coleman, Dan Edidin
For any vector bundle on a toric Deligne-Mumford stack $\ix$ the formalism of \cite{EJK:16} defines two intertial products and on the Chow group…
Spin precession and spin waves in a chiral electron gas: beyond Larmor's theorem
Shahrzad Karimi, Florent Baboux, Florent Perez +3
Larmor's theorem holds for magnetic systems that are invariant under spin rotation. In the presence of spin-orbit coupling this invariance is lost and Larmor's theorem is broken: f…
Silicate Dust in Active Galactic Nuclei
Yanxia Xie, Aigen Li, Lei Hao
The unification theory of active galactic nuclei (AGNs) hypothesizes that all AGNs are surrounded by an anisotropic dust torus and are essentially the same objects but viewed from…