| Description |
We propose to investigate the physical, chemical and dynamical properties of a sample of newly found high-mass pre- and proto-stellar cores identified by the Herschel infrared GALactic Plane Survey (Hi-GAL; Molinari et al. 2010). We will performobservations of the o-NH3(1_0-0_0) line (and, simultaneously, also ofthe o-H2O(1_10-1_01) transition) that willallow us to identify both similarities and differences between the physical and chemical conditions before and after the formation of a warm/hot source inside the dusty core identified in the SPIRE/PACS maps. Hence, these observations will improve our knowledge of the earliest phases in the evolution of high-mass stars. We will also attempt the detection of the NH(1-0) line towards a smaller sample ofsources, in order to improve our knowledge of the N-chemistry during early high-mass star formation. |
| 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 |
