File:WR140.png
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Summary
| Description |
English: The binary in the center has an orbital period of 7.94 years and each time at the periastron the dust production of the collision-wind binary increases. I counted about 20 "shells" and because each ring is about 7.94 years apart, you can say that the entire nebula was created in about 160 years.
The star is 6064.6 light-years distant (Gaia DR3) and the last time we saw the periastron passage was around 2017. So the innermost shell should have formed 4048 BC and the outermost shell should have formed around 4206 BC. Filters: F770W, F1500W, F2100W Proposal ID 1349 (Ryan Lau et al.): https://www.stsci.edu/jwst/science-execution/program-information.html?id=1349 Reference that these shells were created by the binary interaction: https://ui.adsabs.harvard.edu/abs/2002ApJ...567L.137M/abstract |
| Date | (released) |
| Source | Own work |
| Author | NASA, ESA, CSA JWST MIRI & Ryan Lau et al.; Processed by Meli thev |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 17:18, 1 August 2022 | | 1,143 × 785 (1.36 MB) | Meli thev | Uploaded own work with UploadWizard |
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