2026 天文年會 (ASROC Annual Meeting)

Session

Poster - SF

Not scheduled

College of Hakka Studies at NYCU, Zhubei, Hsinchu County 國立陽明交通大學客家學院(竹北六家校區)

26. CHIMPS2: A Comprehensive Catalogue of Molecular Clouds, Clumps, and Cores in the Inner Galactic Plane

Ying Hsuan Liu

Poster

CHIMPS2 is the follow-up to the $^{13}\mathrm{CO}$/$\mathrm{C}^{18}\mathrm{O}$(J = 3→ 2) Heterodyne Inner Milky Way Plane Survey (CHIMPS) and the CO High-Resolution Survey(COHRS) and is a Large Program on the JCMT. The CHIMPS2 Inner Galaxy observations cover longitudes between 13° and 47° with $-0.5^\circ \leq b \leq 0.5^\circ$. When combined with the complementary...

68. Current Status and Future Plans of the Nobeyama Radio Observatory

Rin Yamada (National Astronomical Observatory of Japan)

Poster

The Nobeyama 45-m radio telescope, located at an altitude of 1,400 m in Nagano, Japan, has been a world-leading facility for millimeter-wave astronomy since 1982. Its large aperture provides high spatial resolution ($\sim$15$''$ at 110~GHz), while the four-beam FOREST receiver enables efficient wide-area mapping across 86--116 GHz. Several large survey programs have been conducted with this...

33. From Clouds to Stars: Exploring the Connection Between GMC Mass and HII Region Luminosity

YANG YI JHEN

Poster

This research project aims to compare the mass function of giant molecular clouds (GMCs) with the luminosity function of the H II region to better understand the relationship between the mass distribution of GMC and the luminosity distribution of the H II region. We use the PHANGS-MUSE instrument to obtain luminosity data for the H II region and the PHANGS-ALMA instrument to obtain mass data...

152. Impact of Vertical Boundaries on the Convective Overstability in Protoplanetary Discs

tzuan kuo (國立臺灣大學數學系)

Poster

Convective Overstability (COS) is a hydrodynamic instability in protoplanetary discs (PPDs) that is thought to form large-scale structures like zonal flows (or pressure bumps) and vortices. These structures are supposed to trap dust grains, potentially accelerating planetesimal formation. However, current numerical models rely heavily on periodic vertical boundary conditions (VBCs). Because...

14. Instabilities as the Origin of Protostellar Streamers in Numerical Simulations

Vianey Camacho (National Taiwan Normal University)

Poster

Elongated infalling structures, known as streamers, are increasingly observed around young stellar objects (YSOs), suggesting anisotropic accretion onto protoplanetary disks. These features may influence disk evolution by inducing shocks, transporting chemically distinct material, and triggering accretion variability, yet their physical origin remains uncertain. We explore a new mechanism for...

13. Low and Constant Star Formation Efficiencies in the Gravitational Hierarchical Collapse Scenario

Vianey Camacho (National Taiwan Normal University)

Poster

We investigate the Schmidt–Kennicutt relation and the star formation efficiency per free-fall time ($\epsilon_{\mathrm{ff}}$) in simulations of filamentary molecular clouds undergoing gravitational collapse. We study early evolutionary stages, with global star formation efficiencies of $\sim 2-10 \%$, using surface-density ($\Sigma$) maps like observational studies. Our simulations reproduce...

161. Modeling of the Embedded Disk Around the Class 0 Protostar IRAS 04166+2706

Ms Wing Yu Siu (ASIAA)

Poster

We present radiative transfer modeling of the 1.3 mm dust-continuum emission in the Class 0 protostar IRAS 04166+2706, observed as part of the ALMA Large Program ``Early Planet Formation in Embedded Disks (eDisk).'' Using the radiative transfer code RADMC-3D, we construct disk models characterized by an exponential-taper surface density profile, which describes the radial distribution of dust...

146. Molecular Outflow of IRAS 16544-1604 in CB68

Ting-Chen Chen (NTHU IoA)

Poster

Protostellar outflows play an important role in the early stages of star formation by regulating angular momentum. We targeted the molecular outflow of an isolated source, CB68, which hosts the Class 0 protostar IRAS16544-1604. By combining ALMA and ACA observations, we identified a bipolar molecular outflow with an extent ranging from ~9,000 to 15,000 au. The CO(2-1) and $^{13}$CO (2-1)...

34. Radiative Turbulent Mixing Layer Driven by Rayleigh-Taylor and Kelvin-Helmholtz Instabilities

Yin-Jhen Huang (Department of Physics, National Taiwan University)

Poster

Radiative turbulent mixing layers are central to the evolution of interstellar and circumgalactic gas, characterized by rapid radiative cooling at intermediate temperatures. While recent studies have focused extensively on cooling driven by the Kelvin-Helmholtz (KH) instability, the role of the Rayleigh-Taylor (RT) instability, a key mechanism in supernova remnants, remains largely...

145. The Musca Molecular Filament is a Star-Forming Cloud

Hsiang-Yu Chen (National Central University)

Poster

While the Chamaeleon cloud complex harbors hundreds of newly born stars, the adjacent Musca filament is considered to be at a quiescent stage of star formation. To assess whether Musca is prestellar or already forming stars, we studied a $\sim0.5^\circ \times 2^\circ$ region along the filament using near- to mid-infrared data from 2MASS and AllWISE. Here we report more than a dozen embedded...