Search results for "[PACS] Supernovae"

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ALMA spectral survey of Supernova 1987A – molecular inventory, chemistry, dynamics and explosive nucleosynthesis

2017

We report the first molecular line survey of Supernova 1987A in the millimetre wavelength range. In the ALMA 210--300 and 340--360 GHz spectra, we detected cold (20--170 K) CO, 28SiO, HCO+ and SO, with weaker lines of 29SiO from ejecta. This is the first identification of HCO+ and SO in a young supernova remnant. We find a dip in the J=6--5 and 5--4 SiO line profiles, suggesting that the ejecta morphology is likely elongated. The difference of the CO and SiO line profiles is consistent with hydrodynamic simulations, which show that Rayleigh-Taylor instabilities cause mixing of gas, with heavier elements much more disturbed, making more elongated structure. We obtained isotopologue ratios of…

CIRCUMSTELLAR RINGMetallicityLINE EMISSIONINFRARED WATER-VAPORFOS: Physical sciencesAstrophysics01 natural sciences7. Clean energySpectral lineISM [radio lines]CORE-COLLAPSE SUPERNOVAENucleosynthesis0103 physical sciencesIsotopologueEjectaSupernova remnantLarge Magellanic CloudCARBON-MONOXIDE010303 astronomy & astrophysicsSolar and Stellar Astrophysics (astro-ph.SR)molecules [ISM]QBHigh Energy Astrophysical Phenomena (astro-ph.HE)Physicsabundances [ISM]010308 nuclear & particles physicssupernova remnants [ISM]II-P SUPERNOVAEAstronomyindividual: Supernova 1987A [supernovae]NEBULA M 1-92Astronomy and AstrophysicsSupernovaAstrophysics - Solar and Stellar AstrophysicsPhysics and Astronomy13. Climate actionSpace and Planetary ScienceLARGE-MAGELLANIC-CLOUDAstrophysics - High Energy Astrophysical PhenomenaMASSIVE STARSSN 1987AMonthly Notices of the Royal Astronomical Society
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