2023
DOI: 10.3847/1538-4357/acb8b6
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Hubble Space Telescope Proper Motion Measurements of Supernova Remnant N132D: Center of Expansion and Age

Abstract: We present proper motion measurements of the oxygen-rich ejecta of the LMC supernova remnant N132D using two epochs of Hubble Space Telescope Advanced Camera for Surveys data spanning 16 years. The proper motions of 120 individual knots of oxygen-rich gas were measured and used to calculate a center of expansion (CoE) of α = 5h25m01.ˢ71 and δ = −69°38′41.″64 (J2000) with a 1σ uncertainty of 2.″90. This new CoE measurement is 9.″2 and 10.″8 from two previous CoE estimates based on the geometry of the optically … Show more

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Cited by 2 publications
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