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  Titanium hidden in dust

Iyudin, A. F., Müller, E., & Obergaulinger, M. (2019). Titanium hidden in dust. Monthly Notices of the Royal Astronomical Society, 485(3), 3288-3295. doi:10.1093/mnras/stz419.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-71E0-F Version Permalink: http://hdl.handle.net/21.11116/0000-0004-71E1-E
Genre: Journal Article

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Iyudin, A. F., Author
Müller, E.1, Author              
Obergaulinger, M., Author
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1Stellar Astrophysics, MPI for Astrophysics, Max Planck Society, ou_159882              

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 Abstract: Cassiopeia A, one of the most intriguing Galactic supernova remnants, has been a target of many observational efforts including most recent observations by Atacama Large Millimeter/submillimeter Array (ALMA), Hubble, Herschel, Spitzer, NuSTAR, INTEGRAL, and other observatories. We use recent gamma-ray lines observations of the radioactive products of Cas A supernova explosive nucleosynthesis and spectral energy densities derived for Cas A at infrared wavelengths to speculate about the possibility of radioactive 44Ti  being locked into large dust grains. This suggestion is also supported by the possible observation of a pre-supernova outburst about 80 yr before the actual Cas A supernova explosion in 1671 ad by Italian astronomer G. D. Cassini. The plausibility of such a scenario is discussed also with reference to recent supernovae, and to the contribution of core-collapse supernovae to the overall dust production in the Galaxy.

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 Dates: 2019-02-11
 Publication Status: Published online
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 Rev. Type: Peer
 Identifiers: DOI: 10.1093/mnras/stz419
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Title: Monthly Notices of the Royal Astronomical Society
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Source Genre: Journal
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Publ. Info: OXFORD : OXFORD UNIV PRESS
Pages: - Volume / Issue: 485 (3) Sequence Number: - Start / End Page: 3288 - 3295 Identifier: ISSN: 0035-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000021470