Results 181 to 190 of about 902 (203)
Some of the next articles are maybe not open access.
Sublimation from icy jets as a probe of the interstellar volatile content of comets
Nature, 1999Comets are some of the most primitive bodies left over from the Solar System's early history. They may preserve both interstellar material and material from the proto-solar nebula, and so studies of their volatile components can provide clues about the evolution of gases and ices, as a collapsing molecular cloud transforms into a mature planetary ...
Blake, Geoffrey A. +4 more
openaire +3 more sources
Solids and Volatiles in Comets
1999Comets occupy a key position in the cycles of ices and dust in the Universe. Their nuclei have mostly kept intact the composition and morphology they had at their formation. The return of a comet close to the Earth and Sun is thus an appreciated opportunity to investigate the original state of the material which built up our Solar System.
openaire +1 more source
Volatiles in comets as probes to the early solar system
AIP Conference Proceedings, 2014Comets are considered as the remnants of the planetesimals (building blocks of the planets) formed in the proto-planetary disk of the Sun. They have retained the information about the formation and evolutional history of the early solar system. To investigate the chemical and physical conditions of the proto-planetary disk, comets have been studied as ...
openaire +1 more source
Infrared Observations Of Volatile Molecules In Comet Hale-Bopp
Earth, Moon, and Planets, 1997Infrared observations of comets C/1996 B2 (Hyakutake) and C/1995 O1 (Hale-Bopp) benefited from the high spectral resolution and sensitivity of echelle spectrometers now equipping ground-based telescopes and from the availability of the Infrared Space Observatory (ISO). From the ground, several hydrocarbons were unambiguously detected for the first time:
openaire +1 more source
On the Flux of Water and Minor Volatiles from the Surface of Comet Nuclei
Space Science Reviews, 1999Surface temperature and the available effective energy strongly influence the mass flux of H2O and minor volatiles from the nucleus. We perform computer simulations to model the gas flux from volatile, icy components in porous ice-dust surfaces, in order to better understand results from observations of comets.
J Benkhoff
exaly +2 more sources
Volatile Species in Comet 67P/Churyumov-Gerasimenko
ACS Earth and Space Chemistry, 2019Comets contain abundant amounts of organic and inorganic species. Many of the volatile molecules in comets have also been observed in the interstellar medium and some of them even with similar relative abundances, indicating formation under similar conditions or even sharing a common chemical pathway. There is a growing amount of evidence that suggests
Rubin, Martin +4 more
openaire +1 more source
The Volatile Composition of Comets Deduced from Ultraviolet Spectroscopy
1991The application of vacuum ultraviolet spectroscopy to the study of the composition of the volatile component of cometary coma is reviewed, particularly in the context of comparison with in situ measurements obtained during the recent apparition of comet P/Halley.
openaire +1 more source
The Solar Wind Removal of Volatiles from Comets — Perspectives on the Rosetta Mission
2004The Rosetta-mission is a mission on cosmogony — the evolution of celestial bodies in the solar system. One aspect of this is the solar wind interaction with small bodies approaching the inner solar system, such as comets. A comet will be subject to strong forcing by the Sun near perihelion.
R. Lundin, H. Nilsson
openaire +1 more source
Organic Molecules and Volatiles in Comets
Elements, 2018Hikaru Yabuta +2 more
openaire +1 more source
Association of volatile species to the main ices in comet 67P/Churyumov-Gerasimenko
ESA’s Rosetta mission accompanied comet 67P/Churyumov-Gerasimenko (67P) for over two years between 2014 – 2016. On board was ROSINA, the Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (Balsiger et al. 2007), which measured, in situ, the composition of the gaseous coma.The set of molecules monitored included highly ...Rubin, Martin +15 more
openaire +2 more sources