Results 31 to 40 of about 4,544,171 (395)
Star Formation Rates of Massive Molecular Clouds in the Central Molecular Zone [PDF]
Astrophysical Journal, 2019 We investigate star formation at very early evolutionary phases in five massive clouds in the inner 500 pc of the Galaxy, the Central Molecular Zone (CMZ).
Xing 行 Lu 吕 +10 more
semanticscholar +1 more source
Molecular-Clump Detection Based on an Improved YOLOv5 Joint Density Peak Clustering
Universe, 2023 The detection and analysis of molecular clumps can lead to a better understanding of star formation in the Milky Way. Herein, we present a molecular-clump-detection method based on improved YOLOv5 joint Density Peak Clustering (DPC). The method employs a
Jin-Bo Hu +6 more
doaj +1 more source
Study the Effect of Perturbation in the Evolution of the Filamentary Molecular Clouds [PDF]
Iranian Journal of Astronomy and Astrophysics, 2020 Observatory studies indicate that stars are caused by the collapse of dense molecular clouds, and thermal instability can be a factor in creating this collapse.
Maryam Mesgaran, Khodadad Kokabi
doaj +1 more source
Distances to molecular clouds at high galactic latitudes based on Gaia DR2 [PDF]
Astronomy & Astrophysics, 2019 We report the distances of molecular clouds at high Galactic latitudes (|b| > 10°) derived from parallax and G-band extinction (AG) measurements in the second Gaia data release, Gaia DR2. Aided by Bayesian analyses, we determined distances by identifying
Q. Yan +6 more
semanticscholar +1 more source
The Global Evolution of Giant Molecular Clouds II: The Role of Accretion [PDF]
, 2011 We present virial models for the global evolution of giant molecular clouds. Focusing on the presence of an accretion flow, and accounting for the amount of mass, momentum, and energy supplied by accretion and star formation feedback, we are able to ...
Abdo +79 more
core +2 more sources
Molecular Precursors of the RNA-World in Space: New Nitriles in the G+0.693−0.027 Molecular Cloud
Frontiers in Astronomy and Space Sciences, 2022 Nitriles play a key role as molecular precursors in prebiotic experiments based on the RNA-world scenario for the origin of life. These chemical compounds could have been partially delivered to the young Earth from extraterrestrial objects, stressing the
Víctor M. Rivilla +15 more
doaj +1 more source
Filaments in the Lupus molecular clouds [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 We have studied the filaments extracted from the column density maps of the nearby Lupus 1, 3, and 4 molecular clouds, derived from photometric maps observed with the Herschel satellite. Filaments in the Lupus clouds have quite low column densities, with a median value of $\sim$1.5$\times$10$^{21}$ cm$^{-2}$ and most have masses per unit length lower ...
Davide Elia +23 more
openaire +8 more sources
A Herschel [C II] Galactic plane survey II: CO-dark H2 in clouds [PDF]
, 2014 ABRIDGED: Context: HI and CO large scale surveys of the Milky Way trace the diffuse atomic clouds and the dense shielded regions of molecular hydrogen clouds.
Goldsmith, P. F. +4 more
core +1 more source
Molecular Clouds in Spiral Galaxies [PDF]
Symposium - International Astronomical Union, 1983 A large observational program investigating the 2.6 mm CO line in spiral galaxies is being conducted by myself and Nick Scoville using the 14 m telescope of the Five College Radio Astronomy Observatory (HPBW = 50″). Thus far we have observed 46 galaxies of types Sa, Sb, Sc and Irr, detected 31, and mapped 16.
Judith S. Young
openalex +4 more sources
Statistical study of dust properties in LMC molecular clouds [PDF]
, 2010 The objective of this paper is to construct a catalog providing the dust properties and the star formation efficiency (SFE) of the molecular clouds in the Large Magellanic Cloud (LMC).
Akiko Kawamura +36 more
core +2 more sources