34 Interstellar Matter: Matiere Interstellaire
نویسندگان
چکیده
منابع مشابه
Local Interstellar Matter: The Apex Cloud
Several nearby individual low column density interstellar cloudlets have been identified previously based on kinematical features evident in high-resolution Ca observations near the Sun. One of these cloudlets, the ‘Apex Cloud” (AC), is within 5 pc of the Sun in the solar apex direction. The question of which interstellar cloud will constitute the next galactic environment of the Sun in princip...
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Several nearby individual low column density interstellar cloudlets have been identified based on kinematical features evident in high-resolution Ca observations near the Sun. One of these cloudlets, the ‘Apex Cloud” (AC), is within 5 pc of the Sun in the solar apex direction. The question of which interstellar cloud will constitute the next galactic environment of the Sun in principle can be d...
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La spectrométrie de photoélectrons induits par rayons-X (XPS) est actuellement une des techniques analytiques le plus abondamment utilisée pour fournir des informations sur la composition, la structure électronique et les liaisons chimiques des solides. Une analyse précise implique une mesure précise des pics de photoélectrons mais ces pics sont superposés à un fond continu en raison des diffus...
متن کاملInterstellar chemistry recorded in organic matter from primitive meteorites.
Organic matter in extraterrestrial materials has isotopic anomalies in hydrogen and nitrogen that suggest an origin in the presolar molecular cloud or perhaps in the protoplanetary disk. Interplanetary dust particles are generally regarded as the most primitive solar system matter available, in part because until recently they exhibited the most extreme isotope anomalies. However, we show that ...
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Cosmic ray antiprotons provide an important probe for the study of the galactic Dark Matter, as they could be produced by neutralino annihilations, primordial black holes evaporations or other exotic sources. On the other hand, antiprotons are anyway produced by standard nuclear reactions of cosmic ray nuclei on interstellar matter (spallations), that are known to occur in the Galaxy. This proc...
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ژورنال
عنوان ژورنال: Transactions of the International Astronomical Union
سال: 1994
ISSN: 0251-107X
DOI: 10.1017/s0251107x00008117