Over 17 shells were observed with JWST MIRI, reaching out to about 45 arcseconds, or 70,000 astronomical units (AU). These represent more than 130 years of episodic dust production. A feature called C1, that was previously detected is bright because of …

2022年10月12日 · JWST observations reveal more than 17 nested dust shells that formed in the colliding winds of the massive binary WR 140 that enrich the surrounding interstellar medium with organic compounds...

2022年10月12日 · A new image from NASA’s James Webb Space Telescope reveals a remarkable cosmic sight: at least 17 concentric dust rings emanating from a pair of stars. Located just over 5,000 light-years from Earth, the duo is collectively known as Wolf-Rayet 140.

2022年10月12日 · This image from NASA's James Webb Space Telescope reveals at least 17 concentric dust rings emanating from a pair of stars orbiting one another. Located just over 5,000 light-years from Earth, the system is known as Wolf-Rayet 140 because one of the stars is …

2025年1月13日 · Two mid-infrared images from NASA’s James Webb Space Telescope of Wolf-Rayet 140 show carbon-rich dust moving in space. At right, the two triangles from the main images are matched up to show how much difference 14 months makes: The dust is racing away from the central stars at almost 1% the speed of light.

2022年8月7日 · WR140 is one of the brightest Wolf-Rayet stars of the WC spectral class and its spectrum shows impressively broad emission lines of ionized carbon: [attachment=2107759:WR140.jpg] The star has been the target of numerous Pro-Am campaigns (http://www.threehill.../spectra_41.htm) and the JWST has very recently recorded an …

2022年10月12日 · The latest image from NASA‘s James Webb Space Telescope is a new perspective on the binary star Wolf-Rayet 140, revealing details and structure in a new light. Astronomer Ryan Lau of NSF’s NOIRLab, principal investigator of the Webb Early Release Science program that observed the star, shares his thoughts on the observations.

2025年2月4日 · The "textbook" example of an episodic dust producing WR binary, WR140 (HD193793), provides us with an ideal laboratory for investigating the dust physics and kinematics in an extreme environment. This study is among the first to utilize two separate JWST observations, from Cycle 1 ERS (July 2022) and Cycle 2 (Sept. 2023), to measure WR140's ...

Nested Dust Shells Around the Wolf–Rayet Binary WR 140 Observed With JWST Massive colliding-wind binaries that host a Wolf–Rayet (WR) star present a potentially important source of dust and chemical enrichment in the interstellar medium. However, the chemical composition and survival of dust formed from such systems is not well understood.

2022年10月12日 · We present observations from our Early Release Science program (ERS1349) with the James Webb Space Telescope (JWST) Mid-Infrared Instrument (MIRI) Medium-Resolution Spectrometer (MRS) and Imager that reveal the spectral and spatial signatures of nested circumstellar dust shells around WR~140.