| Description |
The mechanisms involved in the formation of massive stars, and particularly the process of feedback from already-formed stars, are not well understood. Recent models of star formation have started to investigate the role of mechanic (outflows) and radiative feedback, but observational evidence for these processes altering the star formation process has been lacking. In an analysis of the HEXOS data, we have found that high-J HCN lines are perfectly suited to study this phenomenon: in SgrB2(M), they show areversal of the infall profile at high J, indicating that in the inner regions the onset of feedback is halting the inflow, and the gas is actually expanding again. In this proposal, we want to apply this powerful technique to a sample of high-mass star-forming cores at similar stages of development as SgrB2(M). |
| Keywords |
Herschel Space Observatory data, ESA Herschel mission dataset, far-infrared astronomy observations, submillimeter astronomy data, infrared space telescope observations, PACS photometer data, PACS spectrometer data, SPIRE photometer data, SPIRE Fourier transform spectrometer data, HIFI heterodyne spectroscopy data, far-infrared spectroscopy dataset, submillimeter spectral line observations, cold universe observations dataset, star formation infrared data, molecular cloud far-infrared observations, interstellar medium spectroscopy data, protoplanetary disk infrared observations, galaxy evolution far-infrared data, dust emission submillimeter observations, cosmic infrared background measurements, extragalactic infrared survey data, calibrated level 2 data products, FITS files astronomy, spectral cubes far-infrared, flux-calibrated maps, continuum photometry data, spectral energy distribution measurements, ESA Herschel Science Archive data |
