57 citations · 296 across the 10 of their papers we have counts for
8 papers · 1 filter
Graphene and Carbon Nanotubes in Space
X. H. Chen, Z. C. Xiao, Aigen Li +1
As the fourth most abundant element in the universe, carbon plays an important role in the physical and chemical evolution of the interstellar medium. Due to its unique property to…
The Carriers of the "Unidentified" Infrared Emission Features: Clues from Polycyclic Aromatic Hydrocarbons with Aliphatic Sidegroups
Xuejuan Yang, R. Glaser, Aigen Li +1
The "unidentified" infrared emission (UIE) features at 3.3, 6.2, 7.7, 8.6, and 11.3 m are ubiquitously seen in various astrophysical regions. The UIE features are characteristic…
Polycyclic Aromatic Hydrocarbons with Aliphatic Sidegroups: Intensity Scaling for the C-H Stretching Modes and Astrophysical Implications
Xuejuan Yang, Aigen Li, R. Glaser +1
The so-called unidentified infrared emission (UIE) features at 3.3, 6.2, 7.7, 8.6, and 11.3 m ubiquitously seen in a wide variety of astrophysical regions are generally attribut…
Diffuse Interstellar Bands and the Ultraviolet Extinction Curves: The Missing Link Revisited
F. Y. Xiang, Aigen Li, J. X. Zhong
A large number of interstellar absorption features at ~ 4000Å -- 1.8 μm, known as the "diffuse interstellar bands" (DIBs), remains unidentified. Most recent works relate them to la…
On the Aliphatic versus Aromatic Content of the Carriers of the "Unidentified" Infrared Emission Features
Xuejuan Yang, Rainer Glaser, Aigen Li +1
Although it is generally accepted that the so-called "unidentified" infrared emission (UIE) features at 3.3, 6.2, 7.7, 8.6, and 11.3 micrometer are characteristic of the stretching…
The C--H Stretching Features at 3.2--3.5 Micrometer of Polycyclic Aromatic Hydrocarbons with Aliphatic Sidegroups
Xuejuan Yang, Aigen Li, Rainer Glaser +1
The so-called unidentified infrared emission (UIE) features at 3.3, 6.2, 7.7, 8.6, and 11.3 micrometer are ubiquitously seen in a wide variety of astrophysical regions. The UIE fea…
The Carriers of the Interstellar Unidentified Infrared Emission Features: Constraints from the Interstellar C-H Stretching Features at 3.2-3.5 Micrometers
X. J. Yang, R. Glaser, Aigen Li +1
The unidentified infrared emission (UIE) features at 3.3, 6.2, 7.7, 8.6, and 11.3 micrometer, commonly attributed to polycyclic aromatic hydrocarbon (PAH) molecules, have been rece…
A Tale of Two Mysteries in Interstellar Astrophysics: The 2175 Angstrom Extinction Bump and Diffuse Interstellar Bands
F. Y. Xiang, Aigen Li, J. X. Zhong
The diffuse interstellar bands (DIBs) are ubiquitous absorption spectral features arising from the tenuous material in the space between stars -- the interstellar medium (ISM). Sin…