Results 31 to 40 of about 1,445,074 (221)

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

Dark Supernova Remnants Revealed by CO-Line Bubbles in the W43 Molecular Complex along the 4-kpc Galactic Arm

open access: yesGalaxies, 2021
Fine structure of the density distribution in giant molecular clouds (GMCs) around W43 (G31+00+90 km s−1at ∼5.5 kpc) was analyzed using the FUGIN* CO-line survey at high-angular (20”∼0.5 pc) and velocity (1.3 km s−1) resolutions (*Four-receiver-system ...
Yoshiaki Sofue
doaj   +1 more source

Magnetic Fields in the Infrared Dark Cloud G34.43+0.24 [PDF]

open access: yesThe Astrophysical Journal, 2019
Abstract We present the B-fields mapped in IRDC G34.43+0.24 using 850 μm polarized dust emission observed with the POL-2 instrument at the James Clerk Maxwell telescope. We examine the magnetic field geometries and strengths in the northern, central, and southern regions of the filament.
Archana Soam   +42 more
openaire   +6 more sources

Infrared dark cloud cores in the SCUBA Legacy Catalogue [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2009
18 pages, 3 tables, 10 ...
Parsons, H.   +2 more
openaire   +2 more sources

NIKA2 observations around LBV stars Emission from stars and circumstellar material [PDF]

open access: yesEPJ Web of Conferences, 2020
Luminous Blue Variable (LBV) stars are evolved massive objects, previous to core-collapse supernova. LBVs are characterized by photometric and spectroscopic variability, produced by strong and dense winds, mass-loss events and very intense UV radiation ...
Ricardo Rizzo J.   +2 more
doaj   +1 more source

INITIAL FRAGMENTATION IN THE INFRARED DARK CLOUD G28.53−0.25 [PDF]

open access: yesThe Astrophysical Journal, 2015
20 pages, 10 figures, 6 tables, ApJ ...
Xing Lu   +3 more
openaire   +2 more sources

The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). IX. Physical Properties and Spatial Distribution of Cores in IRDCs

open access: yesThe Astrophysical Journal, 2023
The initial conditions found in infrared dark clouds (IRDCs) provide insights on how high-mass stars and stellar clusters form. We have conducted high-angular resolution and high-sensitivity observations toward thirty-nine massive IRDC clumps, which have
Kaho Morii   +15 more
doaj   +1 more source

Multicomponent Kinematics in a Massive Filamentary Infrared Dark Cloud [PDF]

open access: yesThe Astrophysical Journal, 2019
Abstract To probe the initial conditions for high-mass star and cluster formation, we investigate the properties of dense filaments within the infrared dark cloud (IRDC) G035.39–00.33 (G035.39) in a combined Very Large Array and Green Bank Telescope mosaic tracing the NH3 (1, 1) and (2, 2) emission down to 0.08 pc scales.
Vlas Sokolov   +8 more
openaire   +4 more sources

Molecular line observations of infrared dark clouds. II. Physical conditions [PDF]

open access: yes, 2009
Using a source selection biased toward high-mass star-forming regions, we used a large velocity gradient code to calculate the H2 densities and CS column densities for a sample of Midcourse Space Experiment 8 mum infrared dark cores.
David Gibson   +9 more
core   +1 more source

THE DYNAMICAL STATE OF THE SERPENS SOUTH FILAMENTARY INFRARED DARK CLOUD [PDF]

open access: yesThe Astrophysical Journal, 2013
43 pages, 31 figures, accepted by ...
Tanaka, Tomohiro   +8 more
openaire   +3 more sources

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