0000000000261696

AUTHOR

Jeremy Yates

showing 2 related works from this author

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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ALMA observations of Molecules in Supernova 1987A

2017

AbstractSupernova (SN) 1987A has provided a unique opportunity to study how SN ejecta evolve in 30 years time scale. We report our ALMA spectral observations of SN 1987A, taken in 2014, 2015 and 2016, with detections of CO, 28SiO, HCO+ and SO, with weaker lines of 29SiO.We find a dip in the 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 causes mixing of gas, with heavier elements much more disturbed, making more elongated structure.Using 28SiO and its isotopologues, Si isotope ratios were estimated for the first time in SN 1…

Physics010504 meteorology & atmospheric sciencesHydrogenMetallicitychemistry.chemical_elementAstronomyAstronomy and AstrophysicsAstrophysics01 natural sciencesSupernovachemistry13. Climate actionSpace and Planetary Science0103 physical sciencesIsotopologueNeutronPair-instability supernovaEjectaLarge Magellanic Cloud010303 astronomy & astrophysicsQB0105 earth and related environmental sciencesProceedings of the International Astronomical Union
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