Results 141 to 150 of about 49,075 (253)

Interstellar organics and possible connections with the carbonaceous components of meteorites and IDPs [PDF]

Studying the chemical and isotopic composition of interstellar ice and dust provides insight into the composition and chemical history of the solid bodies in the solar nebula and the nature of the materials subsequently brought into the inner part of the
Allamandola, L. J.
core   +1 more source

Life Cycle of Dust in the Magellanic Clouds and the Milky Way

, 2014
To a great extent, our understanding of the life cycle of dust is based on the observational and theoretical studies of the Milky Way and the Magellanic Clouds, which will be the topic of this contribution. Over past years, a large volume of observations
Henning, Thomas, Zhukovska, Svitlana
core   +1 more source

The Densities in Diffuse and Translucent Molecular Clouds: Estimates from Observations of C2 and from Three-dimensional Extinction Maps

The Astrophysical Journal
Newly computed collisional rate coefficients for the excitation of C _2 in collisions with H _2 , presented recently by Najar & Kalugina, are significantly larger than the values adopted previously in models for the excitation of the C _2 molecule, a ...
David A. Neufeld, Daniel E. Welty, Alexei V. Ivlev, Paola Caselli, Gordian Edenhofer, Nick Indriolo, Marta Obolentseva, Kedron Silsbee, Paule Sonnentrucker, Mark G. Wolfire   +9 more
doaj   +1 more source

CHIPS Science Investigation: Exploring the Interstellar Medium [PDF]

, 2003
This booklet describes the interstellar medium and the local bubble that is being studied by NASA’s Cosmic Hot Interstellar Plasma Spectrometer (CHIPS) satellite.

core  

Inverse Raman Scattering and the Diffuse Interstellar Bands: An Exploration of the Systemic Interconnections between Spontaneous and Inverse Raman Scattering and Extended Red Emission, Red Rectangle Bands, and Diffuse Interstellar Bands

The Astrophysical Journal
First identified in 1964, inverse Raman scattering (IRS) is a nonlinear stimulated phenomenon that induces Raman-scattered absorptions where Raman emissions would be expected.
Frédéric Zagury
doaj   +1 more source

Grain mantles: The impact on grain evolution and selective extinction [PDF]

Depletion studies are used to infer the presence of mantles and to constrain grain evolutionary models in the diffuse interstellar medium. The presence of these mantles appears to be important in the evolution of the grains inside diffuse as well as ...
Joseph, Charles L.
core   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

A Tale of Two Sightlines: Comparison of Hydrocarbon Dust Absorption Bands toward Cygnus OB2-12 and the Galactic Center

The Astrophysical Journal
Infrared spectra of hydrocarbon dust absorption bands toward the bright hypergiant Cygnus OB2-12 are compared to published spectra of the Quintuplet Cluster, a sightline to the Galactic center. The Cyg OB2-12 data include a new ground-based 2.86−3.70 μ m
Yvonne J. Pendleton, T. R. Geballe, Laurie E. U. Chu, Marjorie Decleir, Karl D. Gordon, A. G. G. M. Tielens, Louis J. Allamandola, Jeroen Bouwman, J. E. Chiar, Curtis Dewitt, Burcu Gunay, Thomas Henning, Vito Mennella, M. E. Palumbo, Alexey Potapov, Maisie Rashman, Sascha Zeegers   +16 more
doaj   +1 more source

Gas-phase Oxygenation and Sulfurization Processes of Fullerene Cations

The Astrophysical Journal
Atomic oxygen and sulfur are known to efficiently react with fullerenes and may thus form a long list of oxygenated and sulfurated fullerene species in the interstellar medium (ISM).
Nian Zhao, Xiaoyi Hu, Yanan Ge, Congcong Zhang, Aigen Li, Junfeng Zhen, Xuejuan Yang   +6 more
doaj   +1 more source

The Gas-phase Nitridation Processes of Fullerene Cations in the Interstellar Medium

The Astrophysical Journal
The chemical evolution of fullerene molecules is an important and interesting topic in astrochemistry. In this work, the coevolution processes occurring in fullerene cations ([C _60 ] ^+ and [C _58/56 ] ^+ ) in response to ultraviolet radiation and N ...
Yanan Ge, Congcong Zhang, Junfeng Zhen, Yuming Wang   +3 more
doaj   +1 more source