The Formation of Molecular Clouds and Massive Stars
In this talk I consider two questions. First, I investigate the formation of molecular clouds from diffuse interstellar gas. It has been argued that the...
The galactic wind in the circum-nuclear zone of NGC 6946
Using the H-II region H-alpha emission detected in high-resolution long slit spectra of the normal spiral NGC 6946 out to 6 kpc from the center, and along 8...
The importance of improved collision cross sections in deriving interstellar cloud parameters from rotational line spectra
It is shown how present uncertainties in the ability to compute collisional cross sections for rotational transitions can lead to order of magnitude errors in...
The JCMT BISTRO Survey: A Spiral Magnetic Field in a Hub-filament Structure, Monoceros R2
We present and analyze observations of polarized dust emission at 850 μm toward the central 1 × 1 pc hub-filament structure of Monoceros R2 (Mon R2). The data...
The JCMT BISTRO Survey: Studying the Complex Magnetic Field of L43
We present observations of polarized dust emission at 850 μm from the L43 molecular cloud, which sits in the Ophiuchus cloud complex. The data were taken using...
The Local Interstellar Medium - A test-bed for the galactic ISM
A method to explore the column density of the Local Interstellar Medium (LISM) using absorptions in the resonance H and K lines of Mg II. The intrinsic...
The M(17)SW molecular source - Internally or externally heated?
From a measurement of the J = 3 - 2 rotational emission line of hydrogen isocyanide, and a literature value for that J = 1 - 0 line (Snell, 1979), the...
Recent data on, and interpretations of the Kleinmann-Low nebula are examined. It is suggested that associated high velocity gas is radiatively accelerated by a...
What happened to the Milky Way 8 billion years ago?
The formation and evolution of galaxies across cosmic time proceeds in different phases, paced by their internal evolution and external factors like gas...