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• W3101770525 abstract "We present a multiwavelength examination of the supernova remnant (SNR) S26 in the nearby galaxy NGC 300 using data from Chandra X-ray Observatory, XMM-Newton X-ray Observatory, Hubble Space Telescope (HST), the Very Large Array, and the Australia Telescope Compact Array. We simultaneously fit all of the available X-ray data with a thermal plasma model and find a temperature of $0.77 pm 0.13$ keV with a hydrogen column density of ($9.7^{+6.4}_{-4.8}$)$times 10^{20}$ cm$^{-2}$. HST imaging allows us to measure a semimajor axis of $0.78 pm 0.10$ arcsec ($7.5 pm 1.0$ pc) and a semiminor axis of $0.69^{+0.14}_{-0.12}$ arcsec ($6.7^{+1.2}_{-1.4}$ pc). This precise size helps to constrain the age and velocity of the shock to be ($3.3^{+0.7}_{-0.6}$)$times 10^{3}$ yr and $411^{+275}_{-122}$ km s$^{-1}$. We also fit photometry of the surrounding stars to infer the age and mass of the progenitor star to be $8 pm 1$ Myr and $25^{+1}_{-5}$ M$_{odot}$. Based on measured radio properties of the source and assuming equipartition, the estimated radio luminosity of $sim 1.7 times 10^{34}$ erg s$^{-1}$ over the $10^{8}-10^{11}$ Hz frequency range results in a minimum magnetic field associated with this SNR of $0.067$ mG and the minimum energy needed to power the observed synchrotron emission of $1.5 times 10^{49}$ erg. The size and temperature of N300-S26 appear to be similar to the Galactic SNR G311.5-0.3 except that G311.5-0.3 has a significantly lower X-ray luminosity, is older, and has a slower shock velocity." @default.
• W3101770525 created "2020-11-23" @default.
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• W3101770525 date "2019-05-17" @default.
• W3101770525 modified "2023-09-25" @default.
• W3101770525 title "Multiwavelength Study of the X-Ray Bright Supernova Remnant N300-S26 in NGC 300" @default.
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• W3101770525 doi "https://doi.org/10.3847/1538-4357/ab189d" @default.
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