Results 1 to 10 of about 731,750 (386)
Global and Local Infall in the ASHES Sample (GLASHES). I. Pilot Study in G337.541
The Astrophysical JournalRecent high-angular-resolution observations indicate the need for core growth to form high-mass stars. To understand the gas dynamics at the core scale in the very early evolutionary stages before being severely affected by feedback, we have conducted ...
Kaho Morii +6 more
doaj +1 more source
TRIGONOMETRIC PARALLAXES OF MASSIVE STAR-FORMING REGIONS. VI. GALACTIC STRUCTURE, FUNDAMENTAL PARAMETERS, AND NONCIRCULAR MOTIONS [PDF]
, 2009 We are using the Very Long Baseline Array and the Japanese VLBI Exploration of Radio Astronomy project to measure trigonometric parallaxes and proper motions of masers found in high-mass star-forming regions across the Milky Way.
M. Reid +14 more
semanticscholar +1 more source
The Astrophysical JournalUnderstanding the physical properties of star-forming cores as mass reservoirs for protostars and the impact of turbulence is crucial in star formation studies.
Shingo Nozaki +3 more
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The Astrophysical JournalWe describe the construction and use of the Mid-InfraRed Interstellar Objects and Nebulae (MIRION) catalog, which was compiled from 6176 objects identified as “yellowballs” (YBs) by participants in the Milky Way Project.
Kathryn Devine +9 more
doaj +1 more source
, 2000 General properties of the Orion star-forming region are discussed, with a focus on the dense Orion Nebula Cluster (ONC). This cluster contains between 2500 and 4500 objects located within a few parsecs of the eponymous Trapezium stars. Its members are aged <1 to a few Myr and encompass the full spectrum of stellar masses <50 Msun, as well as ...
Hillenbrand, Lynne A. +2 more
openaire +2 more sources
Dynamical evolution of star-forming regions - II. Basic kinematics [PDF]
, 2016 We follow the dynamical evolution of young star-forming regions with a wide range of initial conditions and examine how the radial velocity dispersion, $\sigma$, evolves over time.
R. Parker, N. Wright
semanticscholar +1 more source
Dense Cores in IRDC G14.225-0.506 Revealed by ALMA Observations
The Astrophysical JournalDense cores in massive, parsec-scale molecular clumps are sites that harbor protocluster formation. We present results from observations toward a hub–filament structure of a massive infrared (IR) dark cloud G14.225-0.506 using the Atacama Large ...
Yanhanle Zhao +4 more
doaj +1 more source
The Dependence of Star Formation Efficiency on Gas Surface Density
, 2013 Studies by Lada (2010) and Heiderman (2010) have suggested that star formation mostly occurs above a threshold in gas surface density Sigma of Sigma_c = 120 Msun pc^{-2} (A_K = 0.8). Heiderman infer a threshold by combining low-mass star-forming regions,
Burkert, Andreas, Hartmann, Lee
core +1 more source
The Astrophysical JournalNew JWST near-infrared imaging of the nearby galaxy NGC 628 from the JWST Cycle 1 program Feedback in Emerging extrAgalactic Star clusTers (JWST-FEAST) is combined with archival JWST mid-infrared imaging to calibrate the 21 μ m emission as a star ...
Daniela Calzetti +21 more
doaj +1 more source
The Astrophysical Journal Supplement SeriesWe use the H41 α recombination line to create templates of the millimeter free–free emission in the ALMA-IMF continuum maps, which allows us to separate it from dust emission.
Roberto Galván-Madrid +27 more
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