1 to 7 of 7 Results
Nov 27, 2023
Paul Goldsmith, 2023, "The ALMA-QUARKS survey: – I. Survey description and data reduction", https://doi.org/10.48577/jpl.RI8OMQ, The Astrophysical Journal Letters, JPL Open Repository
In the Turbulent Core model, massive prestellar cores are suggested as the precursors of massive stars. However, only a handful of these candidates have been discovered so far. We conducted highresolution ALMA observations at Band 3 (∼ 2′′, 6000 au) and Band 6 (∼ 0.3′′, 900 au) t... |
Nov 27, 2023
Paul Goldsmith, 2023, "The ALMA-QUARKS survey: – I. Survey description and data reduction", https://doi.org/10.48577/jpl.V9PABL, The Astrophysical Journal Letters, JPL Open Repository
In the Turbulent Core model, massive prestellar cores are suggested as the precursors of massive stars. However, only a handful of these candidates have been discovered so far. We conducted highresolution ALMA observations at Band 3 (∼ 2′′, 6000 au) and Band 6 (∼ 0.3′′, 900 au) t... |
Nov 16, 2023
Paul Goldsmith, 2023, "The ALMA-QUARKS survey: – I. Survey description and data reduction", https://doi.org/10.48577/jpl.JWUPEE, Research in Astonomy and Astrophysics, JPL Open Repository
Abstract This paper presents an overview of the QUARKS survey, which stands for ‘Querying Underlying mechanisms of massive star formation with ALMA-Resolved gas Kinematics and Structures’. The QUARKS survey is observing 139 massive clumps covered by 156 pointings at ALMA Band 6 (... |
Jun 13, 2023
Paul Goldsmith, 2023, "ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): A forming quadruple system with continuum ‘ribbons’ and intricate outflows", https://doi.org/10.48577/jpl.DFEUE3, The Astrophyscial Journal, JPL Open Repository
One of the most poorly understood aspects of low-mass star formation is how multiple-star systems are formed. Here we present the results of Atacama Large Millimeter/submillimeter Array (ALMA) Band-6 observations towards a forming quadruple protostellar system, G206.93-16.61E2, i... |
Feb 16, 2023
Paul Goldsmith, 2023, "ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Density Structure of Centrally Condensed Prestellar Cores from Multi-scale Observations", https://doi.org/10.48577/jpl.4VNY3H, The Astrophyscial Journal, JPL Open Repository
Starless cores represent the initial stage of evolution toward (proto)star formation, and a subset of them, known as prestellar cores, with high density (∼ 106 cm−3 or higher) and being centrally concentrated are expected to be embryos of (proto)stars. Determining the density pro... |
Jan 12, 2023
Paul Goldsmith, 2023, "ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions – XV. Steady Accretion from Global Collapse to Core Feeding in Massive Hub-filament System SDC335", https://doi.org/10.48577/jpl.SQIJXN, Monthly Notices of the Royal Astronomical Society, JPL Open Repository
We present ALMA Band-3/7 observations towards “the Heart” of a massive hub-filament system (HFS) SDC335, to investigate its fragmentation and accretion. At a resolution of 0.03 pc, 3mm continuum emission resolves two massive dense cores MM1 and MM2, with 383¹¸234, and 120 𝑀sun ... |
Jan 10, 2023
Paul Goldsmith, 2023, "ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -XIII. Ongoing triggered star formation within clump-fed scenario found in the massive (∼ 1500 M⊙) clump", https://doi.org/10.48577/jpl.QR2CAZ, Monthly Notices of the Royal Astronomical Society, JPL Open Repository
Whether ionization feedback triggers the formation of massive stars is highly debated. Using ALMA 3 mm observations with a spatial resolution of ∼ 0.05 pc and a mass sensitivity of 1.1 M⊙ beam−1 at 20 K, we investigate the star formation and gas flow structures within the ionizin... |
