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124 papers
Resolved Dust Emission and CO Isotopologues in Giant Molecular Clouds of the Andromeda Galaxy
Chloe Bosomworth, Jan Forbrich, Charles J. Lada +1
Dust emission at submillimeter wavelengths can be used to reliably trace the basic properties of molecular clouds. Early results from a recent Submillimeter Array (SMA) survey of t…
Differential virial analysis: a new technique to determine the dynamical state of molecular clouds
Mark R. Krumholz, Charles J. Lada, Jan Forbrich
Since molecular clouds form stars, at least some parts of them must be in a state of collapse. However, there is a long-standing debate as to whether that collapse is local, involv…
The Role of Pressure in the Structure and Stability of GMCs in the Andromeda Galaxy
C. J. Lada, J. Forbrich, M. R. Krumholz +1
We revisit the role of pressure in the structure, stability and confinement of Giant Molecular Clouds (GMCs) in light of recently published observations and analysis of the GMCs in…
Cloud-scale elemental abundance variations and the CO-to-dust-mass conversion factor in M31
Chloe Bosomworth, Jan Forbrich, Charles J. Lada +3
From a spectroscopic survey of candidate H II regions in the Andromeda galaxy (M31) with MMT/Hectospec, we have identified 294 H II regions using emission line ratios and calculate…
The Molecular Clouds of M31
Charles J. Lada, Jan Forbrich, Glen Petitpas +1
Deep interferometric observations of CO and dust continuum emission are obtained with the Sub-Millimeter Array (SMA) at 230 GHz to investigate the physical nature of the giant mole…
Tracing Dense Gas in Six Resolved GMCs of the Andromeda Galaxy
Jan Forbrich, Charles J. Lada, Jérôme Pety +1
We present dense-gas--tracing molecular observations of six resolved Giant Molecular Clouds (GMCs) in the Andromeda Galaxy (M31). Using the NOEMA interferometer, we observed the tr…