|A detailed study of the physics and chemistry in the Planetary Nebula NGC7027
|Molecular spectroscopy at sub-mm and FIR wavelengths is an extremely powerful tool to investigate the latest stages of stellar evolution. The process of mass loss from evolved stars is not well understood, and molecular emission offers a unique avenue to trace the kinematics and structures of such objects, from AGB stars and their successors, Planetary Nebulae (PN), to massive supergiants. In addition, circumstellar shells of evolved stars foster a remarkable chemistry, producing unusual molecular species not easily observed in other environments, including long carbon chains, anions, metal-bearing molecules, and phosphorus compounds. The mechanisms by which this chemical synthesis takes place, its relationship to dust formation, and its evolution during the AGB and post AGB-phases, are all important questions that have yet to be understood. This proposal and the related other proposals submitted by our collaborators seek to answer these questions. Through the study of the emission from specific species combined with selected spectral surveys towards the PN NGC7027, we aim at understanding more specifically the physics taking place in the beginning of the PN stage, more exactly to precise the physical conditions ruling the molecular envelope, the ionized region and the thin interface between both, i.e. the PDR, through the quantification of the UV and shocks influence.
|The Herschel SPIRE Fourier Transform Spectrometer Spectral Feature Finder - II. Estimating radial velocity of SPIRE spectral observation sources . Scott Jeremy P. et al. . Monthly Notices of the Royal Astronomical Society . null . null . 2020MNRAS.496.4894S ,
Systematic characterization of the Herschel SPIRE Fourier Transform Spectrometer . Hopwood R. et al. . Monthly Notices of the Royal Astronomical Society, Volume 449, Issue 3, p.2274-2303 . 449 . 10.1093/mnras/stv353 . 2015MNRAS.449.2274H ,
|SPIRE_SpireSpectrometer_, HIFI_HifiPoint_dbs, HIFI_HifiFS_freq, HIFI_HifiMapping_fly, PACS_PacsLineSpec_point
|Herschel was launched on 14 May 2009! It is the fourth 'cornerstone' mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 µm range, bridging the gap between earlier infrared space missions and groundbased facilities.
|Publisher And Registrant
|European Space Agency
|European Space Agency, 2012, OT1_fherpin_1, SPG v14.2.0. https://doi.org/10.5270/esa-h7cac6s