FORMALDEHYDE DENSITOMETRY OF STARBURST GALAXIES

@article{Mangum2008FORMALDEHYDEDO,
  title={FORMALDEHYDE DENSITOMETRY OF STARBURST GALAXIES},
  author={J. Mangum and J. Darling and K. Menten and C. Henkel},
  journal={The Astrophysical Journal},
  year={2008},
  volume={673},
  pages={832-846}
}
With a goal toward deriving the physical conditions in external galaxies, we present a survey of the formaldehyde emission in a sample of starburst systems. By extending a technique used to derive the spatial density in star formation regions in our own Galaxy, we show how the relative intensity of the 110-111 and 211-212 K-doublet transitions of H2CO can provide an accurate densitometer for the active star formation environments found in starburst galaxies. Relying on an assumed kinetic… Expand
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Densitometry and Thermometry of Starburst Galaxies
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FORMALDEHYDE DENSITOMETRY OF STARBURST GALAXIES: DENSITY-INDEPENDENT GLOBAL STAR FORMATION
Accurate techniques that allow for the derivation of the spatial density in star formation regions are rare. A technique that has found application for the derivation of spatial densities in Galactic… Expand
Densitometry and Thermometry of Starburst Galaxies
With a goal toward deriving the physical conditions in external galaxies, we have conducted a survey and subsequent high spatial resolution imaging of formaldehyde (H2CO) and ammonia (NH3) emission… Expand
Ammonia Thermometry of Star Forming Galaxies
With a goal toward deriving the physical conditions in external galaxies, we present a study of the ammonia (NH3) emission and absorption in a sample of star-forming systems. Using the unique… Expand
Dusty Star Forming Galaxies at High Redshift
Abstract Far-infrared and submillimeter wavelength surveys have now established the important role of dusty, star-forming galaxies (DSFGs) in the assembly of stellar mass and the evolution of massive… Expand
FORMALDEHYDE DENSITOMETRY OF GALACTIC STAR-FORMING REGIONS USING THE H2CO 312–313 AND 413–414 TRANSITIONS
We present Green Bank Telescope observations of the 312–313 (29 GHz) and 413–414 (48 GHz) transitions of the H2CO molecule toward a sample of 23 well-studied star-forming regions. Analysis of the… Expand
Masers in starburst galaxies
  • J. Darling
  • Physics
  • Proceedings of the International Astronomical Union
  • 2007
Abstract Masers in starburst galaxies are outstanding probes of a range of phenomena related to galaxy and black hole evolution, and offer unique high brightness temperature illumination that can be… Expand
Physical and chemical differentiation of the luminous star-forming region W49A. Results from the JCMT Spectral Legacy Survey
Context. The massive and luminous star-forming region W49A is a well-known Galactic candidate to probe the physical conditions and chemistry similar to those expected in external starburst galaxies.… Expand
Kinetic temperature of massive star forming molecular clumps measured with formaldehyde
For a general understanding of the physics involved in the star formation process, measurements of physical parameters such as temperature and density are indispensable. The chemical and physical… Expand
Thermal formaldehyde emission in NGC 7538 IRS 1
Spectral lines from formaldehyde (H2CO) molecules at cm wavelengths are typically detected in absorption and trace a broad range of environments, from diffuse gas to giant molecular clouds. In… Expand
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