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CO emission as an effective measure of gas masses of protoplanetary disks
Maxime Ruaud, Uma Gorti, David Hollenbach
Many astrochemical models of observed CO isotopologue line emission, earlier considered a good proxy measure of H and hence disk gas mass, favor large deviations in the carbon…
Distribution of Water Vapor in Molecular Clouds. II
Gary J. Melnick, Volker Tolls, Ronald L. Snell +8
The depth-dependent abundance of both gas-phase and solid-state water within dense, quiescent, molecular clouds is important to both the cloud chemistry and gas cooling. Where wate…
Probing ISM Structure in Trumpler 14 & Carina I Using The Stratospheric Terahertz Observatory 2
Young Min Seo, Paul F. Goldsmith, Chris Walker +26
We present observations of the Trumpler 14/Carina I region carried out using the Stratospheric Terahertz Observatory 2 (STO2). The Trumpler 14/Carina I region is in the west part o…
The High Mass Slope of the IMF
Antonio Parravano, David Hollenbach, Christopher F. McKee
Recent papers have found that the inferred slope of the high-mass ( M) IMF for field stars in the solar vicinity has a larger value () than the slopes (…
Stars, Gas, and Dark Matter in the Solar Neighborhood
Christopher F. McKee, Antonio Parravano, David J. Hollenbach
The surface density and vertical distribution of stars, stellar remnants, and gas in the solar vicinity form important ingredients for understanding the star formation history of t…
Extended Carbon Line Emission in the Galaxy: Searching for Dark Molecular Gas along the G328 Sightline
Michael G. Burton, Michael C. B. Ashley, Catherine Braiding +6
We present spectral data cubes of the [CI] 809GHz, 12CO 115GHz, 13CO 110GHz and HI 1.4GHz line emission from an 1 square degree region along the l = 328° (G328) sightline in the Ga…