Results 61 to 70 of about 877,168 (238)
Interstellar Extinction in the Direction of The Barnard 1 Dark Cloud in Perseus
Open Astronomy, 2003 Spectral and luminosity classes, absolute magnitudes, color excesses, interstellar extinctions and distances are determined for 98 stars down to 18 mag in the Barnard 1 dark cloud belonging to the Per OB2 association. The classification of stars is based
Černis K., Straižys V.
doaj +1 more source
Observations of Multiphase, High-velocity, Shocked Gas in the Vela Supernova Remnant
The Astrophysical Journal, 2023 We present an analysis of high-resolution far-UV archival spectra obtained with the Space Telescope Imaging Spectrograph on the Hubble Space Telescope of the star HD 75309, which probes high-velocity shocked gas in the Vela supernova remnant (SNR).
Adam M. Ritchey
doaj +1 more source
Modeling sulfur depletion in interstellar clouds [PDF]
Astronomy & Astrophysics, 2019 Context. The elemental depletion of interstellar sulfur from the gas phase has been a recurring challenge for astrochemical models. Observations show that sulfur remains relatively non-depleted with respect to its cosmic value throughout the diffuse and translucent stages of an interstellar molecular cloud, but its atomic and molecular gas-phase ...
Jacob C. Laas, Paola Caselli
openaire +3 more sources
Energy Dissipation in Interstellar Cloud Collisions [PDF]
, 1997 We present a study of the kinetic energy dissipation in interstellar cloud collisions. The main aim is to understand the dependence of the elasticity (defined as the ratio of the final to the initial kinetic energy of the clouds) on the velocity and mass
M. Ricotti, A. Ferrara, F. Miniati
semanticscholar +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
Evidence of a High Carbon Abundance in the Local Interstellar Cloud [PDF]
, 2006 The nature of the local interstellar cloud (LIC) is highly constrained by the combination of in situ heliospheric and line-of-sight data toward nearby stars.
J. Slavin, P. Frisch
semanticscholar +1 more source
Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.Abstract 10Be deposition in ice cores is widely used for solar reconstructions, but its interpretation is complicated by volcanic influences. Using the state‐of‐the‐art aerosol‐climate model ECHAM6.3‐HAM2.3‐SALSA2.0: 10Be, we assess the impacts of three major volcanic eruptions: Agung (1963), El Chichón (1982) and Pinatubo (1991). All eruptions enhance
Minjie Zheng +8 more
wiley +1 more source
Small-Scale Interstellar Na I Structure Toward M92 [PDF]
, 2001 We have used integral field echelle spectroscopy with the DensePak fiber-optic array on the KPNO WIYN telescope to observe the central 27" x 43" of the globular cluster M92 in the Na I D wavelength region at a spatial resolution of 4".
David M. Meyer +6 more
core +3 more sources
The mass spectrum of interstellar clouds [PDF]
International Astronomical Union Colloquium, 1989 AbstractThe abundance of 21-cm absorption lines seen in surveys at high latitudes can be translated into a line of sight abundance of clouds vs. column density using an empirical relationship between temperature and optical depth. As VLA surveys of 21-cm absorption at low latitudes are now becoming available, it is possible to study the variation of ...
John M. Dickey, Robert W. Garwood
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Interstellar cloud structure: the statistics of centroid velocities [PDF]
, 2006 Context. The statistical properties of maps of line centroids have been used for almost 50 years, but there is still no general agreement on their interpretation. Aims.
V. Ossenkopf +3 more
semanticscholar +1 more source