Results 71 to 80 of about 64,299 (208)

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

Astronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik, P. Köchling, S. Kotov, J. Kozok, Y. Galata, L. Magrini, A. Moiseev, M. Nischang, C. Reese, P. Remmel, P. Riepe, T. Zilch, K. Werner   +12 more
wiley   +1 more source

Interrelationships between interstellar and interplanetary grains [PDF]

, 1986
The relationship between solar system dust (SSD) and interstellar dust particles (ISMD) is being reconsidered because of the discovery of isotopic anomalies in meteorites.
Clayton, D. D.
core   +2 more sources

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

Comet Dust: Connections with Interstellar Dust [PDF]

Symposium - International Astronomical Union, 1989
The Comet Halley campaigns resulted in an enormously better understanding of the composition of comets. Silicates, organic compounds, and volatile ices comprised ofH2O, CO, CO2,S2,CN, and possiblyCH4andOCSoccur in comet grains. These are all known or suspected constituents of interstellar dust.
openaire   +1 more source

Confined Chemistry in Space: Zeolite‐Supported Fe13 Nanoclusters Modulate CS Reactivity

Small Structures, Volume 7, Issue 3, March 2026.
The study explores how an Fe13 cluster confined in chabazite reshapes the reaction of CS and H2 under astrochemical conditions. Confinement promotes C–S bond cleavage over hydrogenation, directing chemistry toward CH4 and H2S formation. Additional CS enables CS2 and C2 species. Microkinetic analysis identifies protoplanetary environments where zeolites
Gerard Pareras, Albert Rimola
wiley   +1 more source

Hidden metallic iron in amorphous silicate dust?

Astronomy & Astrophysics
Context. Amorphous silicate dust is a major component in the interstellar and circumstellar dust formed in the outflow of asymptotic giant branch (AGB) stars.
Enomoto H., Takigawa A., Chihara H., Koike C.   +3 more
doaj   +1 more source

Interstellar Dust in the Solar System: Model versus In-Situ Spacecraft Data

, 2019
In the early 1990s, contemporary interstellar dust penetrating deep into the heliosphere was identified with the in-situ dust detector on board the Ulysses spacecraft.
Altobelli, Nicolas, Grün, Eberhard, Krüger, Harald, Srama, Ralf, Sterken, Veerle, Strub, Peter   +5 more
core   +1 more source

Cluster Models for Next‐Generation, Machine‐Learning‐Based Energy Functions for Molecular Simulations

Small Structures, Volume 7, Issue 2, February 2026.
This work describes how to conceive validated mixed machine learned/empirical energy functions based on finite‐sized molecular clusters for condensed phase simulations. Energy functions for pure and heterogeneous systems are one of the backbones for molecular simulation of condensed phase systems.
JingChun Wang, Meenu Upadhyay, Eric D. Boittier, Kham Lek Chaton, Valerii Andreichev, Mike Devereux, Raidel Martin Barrios, Shimoni Patel, Sena Aydin, Kai Töpfer, Markus Meuwly   +10 more
wiley   +1 more source

On the Active Sites of Mg-bearing Interstellar Dust Grains: An Experimental and Theoretical Model Study of CO2 Activation

The Astrophysical Journal
Magnesium silicates represent an important component of interstellar dust. While the formation of molecules in the interstellar region is typically thought to take place in icy mantles covering such dust particles, the bare uncovered grains are hardly ...
Sandra M. Lang, Thorsten M. Bernhardt, Joost M. Bakker   +2 more
doaj   +1 more source

The binding energies of atoms on amorphous silicate dust: A computational study

Astronomy & Astrophysics
Context. We investigate the binding energies of atoms to interstellar dust particles, which play a key role in their growth and evolution as well as the chemical reactions on their surfaces. Aims.
Hansson Kristoffer, Sameera W. M. C., Esmerian Clarke J., Bossion Duncan, Andersson Stefan, Aalto Susanne, Vlemmings Wouter, Knudsen Kirsten K., Nyman Gunnar   +8 more
doaj   +1 more source