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X-ray, Optical and UV Observations of the Young Supernova Remnant in the Irregular Galaxy NGC 4449
- Source :
- Symposium - International Astronomical Union. 101:579-582
- Publication Year :
- 1983
- Publisher :
- Cambridge University Press (CUP), 1983.
-
Abstract
- A powerful young supernova remnant (SNR) similar to Cas A has recently been discovered in the irregular galaxy NGC 4449. We have obtained X-ray, optical and ultraviolet data which allow us to investigate possible models for this object and estimate its age. Several lines of argument indicate a massive star of order 25 M⊙ as the precursor to this remnant. If the x-ray emission is attributed to a reverse shock in the ejecta, the remnant should be ∼ 120 years old.
Details
- ISSN :
- 00741809
- Volume :
- 101
- Database :
- OpenAIRE
- Journal :
- Symposium - International Astronomical Union
- Accession number :
- edsair.doi...........4ae9588d7a599fcc3758ba5a12af194f