Results 31 to 40 of about 1,818 (183)

Diffuse Interstellar Clouds [PDF]

open access: yesHighlights of Astronomy, 1992
AbstractDiffuse clouds are interstellar objects through which starlight is not greatly extinguished. As a result, many studies rely on ultraviolet and visible measurements. The focus of this review is on spectroscopic work involving atomic and molecular lines. From these measurements, the physical and chemical makeup of the clouds is derived.
David L. Lambert, S. R. Federman
openaire   +1 more source

A chemical link between methylamine and methylene imine and implications for interstellar glycine formation

open access: yesCommunications Chemistry, 2022
The detection of glycine in comets is suggestive of a cosmic origin for amino acids on Earth, but the formation of glycine in interstellar media remains poorly understood.
Prasad Ramesh Joshi, Yuan-Pern Lee
doaj   +1 more source

Clouds in the interstellar medium [PDF]

open access: yesNature, 1980
Giant Molecular Clouds in the Galaxy. Edited by P. M. Solomon and M. G. Edmunds. Pp. 300. (Pergamon: 1980.) £18, $41.
openaire   +1 more source

Cloud-to-cloud Velocity Dispersions Across a Local Arm Segment

open access: yesThe Astrophysical Journal
Using a large sample of 9617 molecular clouds (MCs) from the Milky Way Imaging Scroll Painting survey, we mainly measure one-dimensional cloud-to-cloud velocity dispersions across a 450 deg ^2 segment of the Local Arm in the Galactic second quadrant.
Lixia Yuan, Ji Yang
doaj   +1 more source

Interstellar processes: Ortho/para conversion, radiative association, and dissociative recombination

open access: yesEPJ Web of Conferences, 2015
The study of the ortho-to-para ratio of assorted gas-phase interstellar molecules such as H2, H2O, NH3, and H2O+ has gained interest in recent years, based partially on new spectral observations of light hydrides by the Herschel Space Observatory ...
Herbst Eric
doaj   +1 more source

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

open access: yesJournal of Field Robotics, Volume 43, Issue 4, Page 2553-2584, June 2026.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos   +6 more
wiley   +1 more source

The Structure of an 80 Parsec Long Massive Filament

open access: yesThe Astronomical Journal
Using new Institut de Radioastronomie Millimétrique 30 m telescope N _2 H ^+ , C ^18 O J  = 1–0 and Atacama Pathfinder Experiment telescope ^13 CO and C ^18 O J  = 2–1 maps together with archival far-infrared continuum data, and ^12 CO, and ^13 CO J  = 1–
Qian-Ru He   +13 more
doaj   +1 more source

The Role of Benzonitrile Chlorination Explored by Dissociative Electron Attachment

open access: yesChemPhysChem, Volume 27, Issue 9, 14 May 2026.
Experimental and theoretical dissociative electron attachment study of 2‐ and 4‐chlorobenzonitrile. The dissociative electron attachment process to ortho‐ and para‐chlorobenzonitrile was investigated in the 0–12 eV energy range with a crossed‐beam time‐of‐flight mass spectrometer, supported by quantum chemical scattering calculations.
Pedro Guerra   +5 more
wiley   +1 more source

Tidal Disruption of “Snow Clouds” by Unassociated Stars

open access: yesThe Astrophysical Journal
It has been suggested that star-forming galaxies may host a substantial, dark reservoir of gas in the form of planetary-mass molecular clouds that are so cold that H _2 can condense.
Arthur G. Suvorov, Mark A. Walker
doaj   +1 more source

How catching the interstellar wind in the inner solar system led the way on a road to interdisciplinary research between heliophysics and astrophysics

open access: yesFrontiers in Astronomy and Space Sciences, 2023
Combined in situ observations of the interstellar wind through the solar system and of its pickup ions (PUIs), implanted after ionization in the solar wind, explain, in comparison with interstellar absorption lines of nearby stars, that the Sun is in an ...
Eberhard Möbius
doaj   +1 more source

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