A5092950214- Astrophysics and Star Formation Studies
- Astro and Planetary Science
- Molecular Spectroscopy and Structure
- Atmospheric Ozone and Climate
- Advanced Chemical Physics Studies
- Geological Studies and Exploration
- Scientific Research and Discoveries
Nagoya University
2023-2024
Recent Atacama Large Millimeter/submillimeter Array (ALMA) observations have revealed an increasing number of compact protostellar disks with radii less than a few tens astronomical units and that young Class 0/I objects intrinsic size diversity. To deepen our understanding the origin such tiny disks, we performed highest-resolution configuration ALMA at beam $\sim$0$''$03 (4 au) on very low-luminosity 0 protostar embedded in Taurus dense core MC 27/L1521F. The 1.3 mm continuum measurement...
Abstract Transferring a significant fraction of the magnetic flux from dense cloud core is essential in star formation process. A ringlike structure produced by loss has been predicted theoretically, but no observational identification presented. We have performed ALMA observations Class I protostar IRS 2 Corona Australis star-forming region and resolved distinctive gas ring C 18 O ( J = 2–1) line emission. The center this ∼5000 au away protostar, with diameter ∼7000 au. radial velocity ≲ 1...
Abstract Recent Atacama Large Millimeter/submillimeter Array (ALMA) observations have revealed an increasing number of compact protostellar disks with radii less than a few tens astronomical units and that young Class 0/I objects intrinsic size diversity. To deepen our understanding the origin such tiny disks, we performed highest-resolution configuration ALMA at beam ∼0.″03 (4 au) on very low-luminosity 0 protostar embedded in Taurus dense core MC 27/L1521F. The 1.3 mm continuum measurement...
Abstract We report Atacama Large Millimeter/submillimeter Array/Atacama Compact Array observations of a high-density region the Corona Australis cloud forming young star cluster, and results resolving internal structures. In addition to embedded Class 0/I protostars in continuum, number complex dense filamentary structures are detected C 18 O SO lines by 7 m array. These substructures molecular clump that total power array as extended emission. identify 101 37 with widths few thousand...
We report on ALMA ACA observations of a high-density region the Corona Australis cloud forming young star cluster, and results resolving internal structures. In addition to embedded Class 0/I protostars in continuum, number complex dense filamentary structures are detected C18O SO lines by 7m array. These sub-structures molecular clump that TP array as extended emission. identify 101 37 with few thousand AU widths SO, respectively, called feathers. The typical column density feathers is...
Transferring a significant fraction of the magnetic flux from dense cloud core is essential in star formation process. A ring-like structure produced by loss has been predicted theoretically, but no observational identification presented. We have performed ALMA observations Class I protostar IRS 2 Corona Australis star-forming region and resolved distinctive gas ring C$^{18}$O ($J$ = 2-1) line emission. The center this $\sim$5,000 au away protostar, with diameter $\sim$7,000 au. radial...