Organic compounds in carbonaceous meteorites
Covering: 1950s to the present day The carbonaceous chondrite meteorites are fragments of
asteroids that have remained relatively unprocessed since the formation of the solar system …
asteroids that have remained relatively unprocessed since the formation of the solar system …
Mass fractionation laws, mass-independent effects, and isotopic anomalies
Isotopic variations usually follow mass-dependent fractionation, meaning that the relative
variations in isotopic ratios scale with the difference in mass of the isotopes involved (eg …
variations in isotopic ratios scale with the difference in mass of the isotopes involved (eg …
[HTML][HTML] Composition and radiative properties of grains in molecular clouds and accretion disks
JB Pollack, D Hollenbach, S Beckwith… - … Journal, Part 1 …, 1994 - adsabs.harvard.edu
We define a model of the compositon and abundances of grains and gases in molecular
cloud cores and accretion disks around young stars by employing a wide range of …
cloud cores and accretion disks around young stars by employing a wide range of …
Present-day cosmic abundances-A comprehensive study of nearby early B-type stars and implications for stellar and Galactic evolution and interstellar dust models
MF Nieva, N Przybilla - Astronomy & Astrophysics, 2012 - aanda.org
Context. Early B-type stars are ideal indicators for present-day cosmic abundances since
they preserve their pristine abundances and typically do not migrate far beyond their birth …
they preserve their pristine abundances and typically do not migrate far beyond their birth …
[كتاب][B] Dust in the galactic environment
DCB Whittet - 2018 - taylorfrancis.com
Dust is a ubiquitous feature of the cosmos, im**ing directly or indirectly on most fields of
modern astronomy and astrophysics. Dust in the Galactic Environment, Second Edition …
modern astronomy and astrophysics. Dust in the Galactic Environment, Second Edition …
NuGrid stellar data set. I. Stellar yields from H to Bi for stars with metallicities Z= 0.02 and Z= 0.01
We provide a set of stellar evolution and nucleosynthesis calculations that applies
established physics assumptions simultaneously to low-and intermediate-mass and massive …
established physics assumptions simultaneously to low-and intermediate-mass and massive …
The distribution of aluminum‐26 in the early solar system—A reappraisal
A compilation of over 1500 Mg‐isotopic analyses of Al‐rich material from primitive solar
system matter (meteorites) shows clearly that 26Al existed live in the early Solar System …
system matter (meteorites) shows clearly that 26Al existed live in the early Solar System …
[PDF][PDF] The nature and distribution of the organic material in carbonaceous chondrites and interplanetary dust particles
Most of the carbon in carbonaceous chondrites is organic material that displays structures as
diverse as kerogen-like macromolecules and simpler soluble compounds ranging from polar …
diverse as kerogen-like macromolecules and simpler soluble compounds ranging from polar …
Interstellar grains in primitive meteorites: Diamond, silicon carbide, and graphite
Primitive meteorites contain a few parts per million (ppm) of pristine interstellar grains that
provide information on nuclear and chemical processes in stars. Their interstellar origin is …
provide information on nuclear and chemical processes in stars. Their interstellar origin is …
Effects of particle size distribution on opacity curves of protoplanetary disks around T Tauri stars
K Miyake, Y Nakagawa - icarus, 1993 - Elsevier
A new interpretation for observed opacity indices at submillimeter-and millimeter-
wavelength regions of circumstellar disks around T Tauri stars is presented. Recent …
wavelength regions of circumstellar disks around T Tauri stars is presented. Recent …