Results 91 to 100 of about 25,001 (219)
Interstellar lithium - Differential depletion in diffuse clouds
The Astrophysical Journal, 1986 Les observations de LiId6708 ont conduit a la detection en direction de sept etoiles et a des limites en direction de quinze ...
openaire +1 more source
Plasma Production by Laser Ablation of Heavy Metals
Contributions to Plasma Physics, Volume 65, Issue 7, August 2025.ABSTRACT An Nd:YAG focused laser operating at 1064 nm, 3 ns pulse width, 360 mJ pulse energy, is employed to irradiate heavy metals, such as Ta, W, Pt, Au, and Pb. The in‐vacuum irradiation produces an expanding plasma at the target surface which has high density, temperature, and kinetic energy of emitted ions. Ions have a velocity of the order of 104
L. Torrisi, M. Cutroneo, A. Torrisi
wiley +1 more source
Dust Absorption toward Supernova Remnant W44
The Astronomical JournalSupernova remnants (SNRs) can strongly affect the chemical composition of the interstellar dust. In this paper, we investigate to what degree the dust and ices are modified by observing four stars expected to be absorbed by a giant molecular cloud ...
Tian-Yu Tu +3 more
doaj +1 more source
Diffuse Interstellar Bands Toward HD 62542 [PDF]
, 2005 Diffuse interstellar bands (DIBs) have been detected for the first time along the peculiar translucent line of sight toward HD 62542, which passes through a diffuse cloud core.
Blake, Geoffrey A. +2 more
core +1 more source
Enigma of H 3 + in Diffuse Interstellar Clouds [PDF]
, 2003 H 3 + is of fundamental importance to interstellar chemistry both because it is a hydrogenic species (and >9O% of all nuclei in the universe are hydrogen nuclei; see Fig. 1) and because it serves as the universal protonator, initiating a chain of ion-neutral reactions that is responsible for the formation of most interstellar molecules.
Benjamin J. McCall, Takeshi Oka
openaire +1 more source
The Astrophysical JournalThe dominant sources of photoionizing radiation in the extreme-ultraviolet (EUV) incident on the exterior of the local interstellar clouds include two nearby early B-type stars, ϵ CMa (124 ± 2 pc) and β CMa (151 ± 5 pc), three hot dwarfs, and the Local ...
J. Michael Shull +3 more
doaj +1 more source
Structure formation in a colliding flow: The Herschel view of the Draco nebula [PDF]
, 2017 The Draco nebula is a high Galactic latitude interstellar cloud likely to have been formed by the collision of a Galactic halo cloud entering the disk of the Milky Way.
Abergel, A. +11 more
core +2 more sources
Deep Space Network Radio Science and Ground‐Based Planetary Radar in the Next Decade
Radio Science, Volume 60, Issue 7, July 2025.Abstract The Deep Space Network (DSN) has been a core operational element of NASA's crewed and robotic exploration of the Solar System since the early 1960s. The primary role of the DSN has been to acquire telemetry and navigation data, but over the years, its radiometric and radar capabilities have expanded to form a system for obtaining unique ...
R. S. Park +13 more
wiley +1 more source
H i Kinematics and the E(B − V)/N(H i) Ratio
The Astrophysical JournalThe λ 21 cm H i emission that is used to trace the gas-to-dust ratio at high Galactic latitudes has contributions from material beyond the Milky Way disk, with uncertain and likely subsolar metallicity and dust content.
Harvey Liszt
doaj +1 more source
Matrix Isolation and Solvation of the Benzonitrile Radical Anion
Chemistry – A European Journal, Volume 31, Issue 35, June 23, 2025.Hydrated electrons are potent reducing agents that may play significant roles in chemical evolution within astrochemical and prebiotic environments. Benzonitrile, a molecule present in the interstellar medium (ISM), can capture electrons in amorphous water ice at cryogenic temperatures, forming a radical anion.
Shubhra Sarkar +2 more
wiley +1 more source