47 citations · 99 across the 6 of their papers we have counts for
6 papers
Ultraviolet Interstellar Extinction toward High Galactic Latitudes
Ajay Mishra, Aigen Li
Nearby high Galactic latitude clouds provide a unique laboratory to study the physics and structure of the Galactic interstellar medium (ISM) and the properties of the interstellar…
Interstellar Silicon Depletion and the Ultraviolet Extinction
Ajay Mishra, Aigen Li
Spinning small silicate grains were recently invoked to account for the Galactic foreground anomalous microwave emission. These grains, if present, will absorb starlight in the far…
On the Relation between the Mysterious 21 Micrometer Emission Feature of Post-Asymptotic Giant Branch Stars and Their Mass Loss Rates
Ajay Mishra, Aigen Li, B. W. Jiang
Over two decades ago, a prominent, mysterious emission band peaking at ~20.1 micrometer was serendipitously detected in four preplanetary nebulae (PPNe; also known as "protoplaneta…
Probing the Role of Carbon in the Interstellar Ultraviolet Extinction
Ajay Mishra, Aigen Li
We probe the role of carbon in the ultraviolet (UV) extinction by examining the relations between the amount of carbon required to be locked up in dust [C/H]_dust with the 2175 Ang…
A Tale of Three Mysterious Spectral Features in Carbon-Rich Evolved Stars: The 21 Micrometer, 30 Micrometer, and "Unidentified Infrared" Emission Features
Ajay Mishra, Aigen Li, B. W. Jiang
The mysterious "21 micrometer" emission feature seen almost exclusively in the short-lived protoplanetary nebula (PPN) phase of stellar evolution remains unidentified since its dis…
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…