Results 41 to 50 of about 792,921 (206)

Novel algorithms for the understanding of the chemical cosmos [PDF]

open access: yes, 2015
Molecular data from the interstellar medium (ISM) contain information that holds the key to understanding our chemically controlled cosmos and to unlocking the secrets of our universe.
Makrymallis, A
core  

Molecular filming: A director's grammar for visualizing chemistry in motion

open access: yesBulletin of the Korean Chemical Society, Volume 47, Issue 9, Page 1042-1057, September 2026.
Molecular filming names the practice, not just the product, of ultrafast structural science. In deliberate analogy to molecular editing, which rewrites connectivity in space, molecular filming records geometry in time, assembling time‐ordered structural frames into a movie of atomic motion and recasting the field as a grammar of directorial choices ...
Hyotcherl Ihee
wiley   +1 more source

The Structure of an 80 Parsec Long Massive Filament

open access: yesThe Astronomical Journal
Using new Institut de Radioastronomie Millimétrique 30 m telescope N _2 H ^+ , C ^18 O J  = 1–0 and Atacama Pathfinder Experiment telescope ^13 CO and C ^18 O J  = 2–1 maps together with archival far-infrared continuum data, and ^12 CO, and ^13 CO J  = 1–
Qian-Ru He   +13 more
doaj   +1 more source

Binary Formation in a 100 μm Dark Massive Core

open access: yesThe Astrophysical Journal, 2023
We report high-resolution ALMA observations toward a massive protostellar core C1-Sa (∼30 M _⊙ ) in the Dragon infrared dark cloud. At the resolution of 140 au, the core fragments into two kernels (C1-Sa1 and C1-Sa2) with a projected separation of ∼1400 ...
Shuo Kong   +6 more
doaj   +1 more source

A study of the nine interstellar dark clouds

open access: yesThe Astrophysical Journal Supplement Series, 1981
An investigation of the physical and chemical properties of nine interstellar dark clouds is reported. Observations of a variety of atomic and molecular species have been obtained and the clouds have been partially mapped in the near infrared. The observations have been compared with theoretical models of the line emission and absorption from ...
openaire   +1 more source

Simulating molecular cloud regulated star formation in Galaxies [PDF]

open access: yes, 2007
This thesis is primarily concerned with understanding the process of galaxy formation via the simulation of the interstellar medium, star formation and supernova feedback.
Booth, Craig Martin
core  

Evaluating maturity of organic matter in hydrated C1 and CM‐like clasts and a dehydrated clast within a polymict eucrite and a howardite

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 8, Page 1965-1993, August 2026.
Abstract Volatile‐rich xenolithic clasts in different types of brecciated meteorites represent unique pristine solar system material. This study investigates the maturity and thermal history of organic matter using Raman spectroscopy and aqueous alteration effects using infrared spectroscopy in the matrix of 15 volatile‐rich clasts (C1 and CM‐like ...
Swarna Prava Das   +7 more
wiley   +1 more source

Interstellar C3N - Detection in Taurus dark clouds

open access: yesThe Astrophysical Journal, 1980
We report the first detection of the radical C/sub 3/N in interstellar sources, at the centers of the two dark clouds TMC 1 and TMC 2. The very small line widths observed for this low-order transition (N=3..-->..2) allow a partial resolution of the hyperfine structure and a tentative estimate of this radical's hyperfine constants.
P. Friberg   +3 more
openaire   +1 more source

Raman analysis of organic refractory materials after energetic processing: Evidence for amorphous carbon on TNOs and comets

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 8, Page 1994-2015, August 2026.
Abstract Amorphous carbon (αC) is found in various extraterrestrial particles, including those thought to originate from the outer Solar System. αC can form through two main processes involving C‐rich materials: exposure to energetic charged particles and thermal processing.
M. Germanà   +10 more
wiley   +1 more source

Investigation into Triggered Star Formation by Radiative Driven Implosion [PDF]

open access: yes, 2016
When massive stars form, they emit strong, hydrogen ionising radiation fields into their molecular cloud environment, forming HII regions. This is believed to be capable of inducing effects which can trigger further star formation through a process known
Kinnear, Timothy Michael
core  

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