SUPERGIANT SHELLS AND MOLECULAR CLOUD FORMATION IN THE LARGE MAGELLANIC CLOUD [PDF]
, 2012 We investigate the influence of large-scale stellar feedback on the formation of molecular clouds in the Large Magellanic Cloud (LMC). Examining the relationship between H i and 12CO(J = 1–0) in supergiant shells (SGSs), we find that the molecular ...
J. Dawson +6 more
semanticscholar +3 more sources
A BUBBLING NEARBY MOLECULAR CLOUD: COMPLETE SHELLS IN PERSEUS [PDF]
, 2011 We present a study of the shells (and bubbles) in the Perseus molecular cloud using the COMPLETE survey large-scale 12CO(1–0) and 13CO(1–0) maps. The 12 shells reported here are spread throughout most of the Perseus cloud and have circular or arc-like ...
H. Arce +4 more
semanticscholar +3 more sources
An Ice Age JWST inventory of dense molecular cloud ices [PDF]
Nature Astronomy, 2023 Icy grain mantles are the main reservoir of the volatile elements that link chemical processes in dark, interstellar clouds with the formation of planets and the composition of their atmospheres.
M. McClure +41 more
semanticscholar +1 more source
Molecular Cloud Populations in the Context of Their Host Galaxy Environments: A Multiwavelength Perspective [PDF]
Astronomical Journal, 2022 We present a rich, multiwavelength, multiscale database built around the PHANGS–ALMA CO (2 − 1) survey and ancillary data. We use this database to present the distributions of molecular cloud populations and subgalactic environments in 80 PHANGS galaxies,
J. Sun 孙 +37 more
semanticscholar +1 more source
3D magnetic-field morphology of the Perseus molecular cloud [PDF]
Astronomy & Astrophysics, 2022 Context. Despite recent observational and theoretical advances in mapping the magnetic fields associated with molecular clouds, their three-dimensional (3D) morphology remains unresolved.
M. Tahani +13 more
semanticscholar +1 more source
Giant molecular cloud catalogues for PHANGS-ALMA: methods and initial results [PDF]
Monthly notices of the Royal Astronomical Society, 2021 We present improved methods for segmenting CO emission from galaxies into individual molecular clouds, providing an update to the cprops algorithms presented by Rosolowsky & Leroy.
E. Rosolowsky +28 more
semanticscholar +1 more source
Ice-nucleating particles in northern Greenland: annual cycles, biological contribution and parameterizations [PDF]
Atmospheric Chemistry and Physics, 2023 Ice-nucleating particles (INPs) can initiate ice formation in clouds at temperatures above −38 ∘C through heterogeneous ice nucleation. As a result, INPs affect cloud microphysical and radiative properties, cloud lifetime, and precipitation behavior and
K. C. H. Sze +7 more
doaj +1 more source
Nebula-Relay Hypothesis: The Chirality of Biological Molecules in Molecular Clouds
Frontiers in Astronomy and Space Sciences, 2022 The chiral puzzle of biological molecules is thought to be closely related to the origin of life and is still a mystery so far. Previously, we proposed a new model on the origin of life, Nebula-Relay hypothesis, which assumed that the life on Earth ...
Lei Feng, Lei Feng, Lei Feng
doaj +1 more source
A Cloud-Scale View of the Molecular Gas Disk in the Whirlpool Galaxy and Beyond [PDF]
EPJ Web of Conferences, 2022 The nearby galaxy M51 (also known as the Whirlpool galaxy) hosts an iconic grand-design spiral pattern and both IRAM facilities conducted the first cloud-scale (∼50 pc resolution) survey of the molecular gas reservoir across a the disk of a massive star ...
Schinnerer Eva +8 more
doaj +1 more source
Multi-line characterization of whole molecular clouds using stratified random sampling [PDF]
EPJ Web of Conferences, 2022 We have developed a new technique to characterize the multi-line emission from molecular clouds using statistical sampling. Our method uses available extinction maps to select a relatively small sample of cloud positions that cover the full range of ...
Tafalla Mario +2 more
doaj +1 more source