Results 51 to 60 of about 52,443 (248)
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 the Local Interstellar Cloud [PDF]
International Astronomical Union Colloquium, 1997 AbstractConstraints on the ambient (circumsolar) interstellar medium can be derived from observations of interstellar neutrals or their derivatives in the heliosphere. New results have been recently obtained which, when combined with optical and UV observations of the nearby stars (HST-GHRS, EUVE), remove long-standing contradictions and allow us to ...
openaire +2 more sources
Do the Antennas of DEMETER Spacecraft Detect Dust Impacts?
Journal of Geophysical Research: Space Physics, Volume 130, Issue 5, May 2025.Abstract This study investigates pulses detected by the electric field instrument, ICE (Instrument Champ Electrique) onboard the DEMETER spacecraft. Using an automated identification algorithm, we identified 1,000 short pulses recorded in 2005 and 2010. The spatial distribution of these signals, primarily localized over South America and near the South
Samia Ijaz +3 more
wiley +1 more source
A modified theoretical Σ − D relation for supernova remnants: I. The case of constant temperature within the supernova remnant [PDF]
Serbian Astronomical Journal, 2003 We present a modification of the theoretical Σ − D relation for supernova remnants (SNRs) in the adiabatic expansion phase. This modification is based on the convolution of the relation first derived by Shklovsky with the Σ − D relation derived in this ...
Urošević Dejan V. +2 more
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Multi‐isotope (N, O, Ti, and Cr) study of C1 and CM‐like clasts—Probing unsampled C1 material
Meteoritics &Planetary Science, Volume 60, Issue 5, Page 1073-1094, May 2025.Abstract A multi‐element isotope (N, O, Ti, and Cr) study was conducted on C1 and CM‐like clasts hosted in achondrites and chondrite breccias to understand the genesis of these chondritic clasts. The mineralogy, O, and N isotopes confirm that CM‐like clasts in howardites and polymict eucrites closely resemble CM chondrite‐like material.
Markus Patzek +9 more
wiley +1 more source
Pulsar scintillation patterns and strangelets
, 2013 We propose that interstellar extreme scattering events, usually observed as pulsar scintillations, may be caused by a coherent agent rather than the usually assumed turbulence of $\rm H_2$ clouds.
Pen, Ue-Li +2 more
core +2 more sources
Gas and Dust in Interstellar Clouds [PDF]
Symposium - International Astronomical Union, 1973 Detailed measurements have been made of the H, OH and H2CO lines formed in the L1534 dense dust cloud; some H and H2CO observations have been made of the dust cloud lying behind the Orion cluster. These indicate a similar distribution of the 3 species throughout the dust clouds.
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Volume measurement of microparticles using SEM photogrammetry and 3‐D reconstruction
Meteoritics &Planetary Science, Volume 60, Issue 5, Page 1227-1235, May 2025.Abstract In this paper, we introduce a method for volume measurement of microparticles that includes scanning electron microscope photogrammetry with 3‐D model construction. Our results show that our method limits the volume uncertainty to ±10%, which is a significant improvement compared to previous methods (which likely overestimated volume by 100 ...
Y. Zheng +4 more
wiley +1 more source
Geophysical Research LettersOur solar system's path has recently been shown to potentially intersect dense interstellar clouds 2 and 7 million years ago: the Local Lynx of Cold Cloud and the edge of the Local Bubble.
Jesse A. Miller +4 more
doaj +1 more source
THE ABUNDANCE OF BORON IN DIFFUSE INTERSTELLAR CLOUDS [PDF]
The Astrophysical Journal, 2011 We present a comprehensive survey of boron abundances in diffuse interstellar clouds from observations made with the Space Telescope Imaging Spectrograph (STIS) of the Hubble Space Telescope. Our sample of 56 Galactic sight lines is the result of a complete search of archival STIS data for the B II 1362 resonance line, with each detection confirmed by ...
David L. Lambert +6 more
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