Evidence for a Molecular Cloud Origin for Gamma-Ray Bursts: Implications for the Nature of Star Formation in the Universe [PDF]
, 2001 It appears that the majority of rapidly-, well-localized gamma-ray bursts with undetected, or dark, optical afterglows, or `dark bursts' for short, occur in clouds of size R > 10L_{49}^{1/2} pc and mass M > 3x10^5L_{49} M_{sun}, where L is the isotropic ...
Dal Fiume D. +7 more
core +2 more sources
Gravitational fragmentation caught in the act: the filamentary Musca molecular cloud [PDF]
, 2015 Filamentary structures are common in molecular clouds. Explaining how they fragment to dense cores is a missing step in understanding their role in star formation.
J. Kainulainen +5 more
semanticscholar +1 more source
THE PHYSICAL CONDITIONS IN A PRE-SUPER STAR CLUSTER MOLECULAR CLOUD IN THE ANTENNAE GALAXIES [PDF]
, 2015 We present an analysis of the physical conditions in an extreme molecular cloud in the Antennae merging galaxies. This cloud has properties consistant with those required to form a globular cluster. We have obtained ALMA CO and 870 μm observations of the
K. Johnson +9 more
semanticscholar +1 more source
‘The Brick’ is not abrick: a comprehensive study of the structure and dynamics of the central molecular zone cloud G0.253+0.016 [PDF]
Monthly notices of the Royal Astronomical Society, 2019 In this paper we provide a comprehensive description of the internal dynamics of G0.253+0.016 (a.k.a. 'the Brick'); one of the most massive and dense molecular clouds in the Galaxy to lack signatures of widespread star formation. As a potential host to a
J. Henshaw +22 more
semanticscholar +1 more source
Impact Of Magnetic Fields On Molecular Cloud Formation & Evolution [PDF]
, 2015 We use magnetohydrodynamical simulations of converging flows to investigate the process of molecular cloud formation and evolution out of the magnetised ISM.
B. Kortgen, R. Banerjee
semanticscholar +1 more source
Cloud-scale Molecular Gas Properties in 15 Nearby Galaxies [PDF]
Astrophysical Journal, 2018 We measure the velocity dispersion, σ, and surface density, Σ, of the molecular gas in nearby galaxies from CO spectral line cubes with spatial resolution 45–120 pc, matched to the size of individual giant molecular clouds. Combining 11 galaxies from the
Jiayi Sun +21 more
semanticscholar +1 more source
Fragmentation in molecular clouds [PDF]
Symposium - International Astronomical Union, 1991 B209. Fragments are detected in the outer parts of the B209 molecular cloud in a region of density 1000 cm−3 using 12CO, 13CO, H2CO, IRAS 60 and 100 μm images, discernable as velocity components, and have characteristics: <Rfragment>∼ 0.4 pc; <Mfragment>∼ 2 M⊙; <MVRfragment>∼ 1.6 M⊙ km/s pc; Tgas ∼ 11 K; Tdust> ∼ 16 K??. The system
Frank O. Clark +2 more
openaire +1 more source
Cloud-cloud Collision in the Galactic Center 50 km s$^{-1}$ Molecular Cloud [PDF]
, 2015 We performed a search of star-forming sites influenced by external factors, such as SNRs, HII regions, and cloud-cloud collisions, to understand the star-forming activity in the Galactic center region using the NRO Galactic Center Survey in SiO $v=0, J=2-
M. Tsuboi, A. Miyazaki, K. Uehara
semanticscholar +1 more source
Light Element Nucleosynthesis in a Molecular Cloud Interacting with a Supernova Remnant and the Origin of Beryllium-10 in the Protosolar Nebula [PDF]
, 2014 The presence of short-lived radionuclides in the early solar system provides important information about the astrophysical environment in which the solar system formed.
de Séréville, Nicolas +2 more
core +2 more sources
SUBMILLIMETER POLARIZATION SPECTRUM IN THE VELA C MOLECULAR CLOUD [PDF]
, 2015 Polarization maps of the Vela C molecular cloud were obtained at 250, 350, and 500 μm during the 2012 flight of the balloon-borne telescope BLASTPol.
N. Gandilo +29 more
semanticscholar +1 more source