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
From Diffuse Gas to Dense Molecular Cloud Cores [PDF]
, 2020 Molecular clouds are a fundamental ingredient of galaxies: they are the channels that transform the diffuse gas into stars. The detailed process of how they do it is not completely understood. We review the current knowledge of molecular clouds and their
J. Ballesteros-Paredes +10 more
semanticscholar +1 more source
A Velocity Structure Analysis of Giant Molecular Cloud Associated with HII Region S152 [PDF]
Journal of Astronomy and Space Sciences, 2005 S152 is a small bright emission nebula located in the Perseus arm. Its optical diameter corresponds to 1.5 pc for an adopted distance 3.5 kpc. However, S152 is a part of a giant molecular cloud complex, which consists of several dense cores, containing ...
Woo-Yeol Choi +3 more
doaj +1 more source
Anatomy of Orion Molecular Clouds—The Astrochemistry Perspective/Approach
Frontiers in Astronomy and Space Sciences, 2021 The Orion molecular cloud (OMC) complex is the nearest and perhaps the best-studied giant molecular cloud complex within which low-mass and massive star formation occur. A variety of molecular species, from diatomic molecules to complex organic molecules
Dipen Sahu, Sheng-Yuan Liu, Tie Liu
doaj +1 more source
Turbulent molecular clouds [PDF]
The Astronomy and Astrophysics Review, 2012 To be published in AARv, 58 pages, 13 figures (higher resolution figures will be available on line)
Patrick Hennebelle +2 more
openaire +5 more sources