IEEE1 个月
Chemical enrichment by Wolf-Rayet stars: non-solar metallicities
Abstract: Following on from our recent Paper I, we present theoretical models of Wolf-Rayet (WR) stars for non-solar metallicities from Z = 0.03 to 0.0001 by mass fraction with different mass-loss ...
IEEE11 个月
An extensive spectroscopic time series of three Wolf–Rayet stars – I. The lifetime of ...
Abstract: During the summer of 2013, a 4-month spectroscopic campaign took place to observe the variabilities in three Wolf–Rayet stars. The spectroscopic data have been analysed for WR 134 (WN6b), to ...
Gizmodo12 天
Beautifully Detailed Webb Image Shows ‘Shelled’ Star on the Verge of Death
Only one of the stars in WR 140 is a Wolf-Rayet star, roughly 10 times more massive than the Sun. Webb has imaged Wolf-Rayet stars before; in 2023, the space observatory captured a brilliant view ...
ScienceAlert11 天
JWST Snaps Colossal Waves of Star Dust That Dwarf Our Own Solar System
In new work, the JWST was tasked with observing the dust itself. "Massive colliding-wind binaries that host a Wolf–Rayet (WR) star present a potentially important source of dust and chemical ...
Space.com10 天
James Webb Space Telescope watches planet-forming dust shells zooming through space
Its partner is a Wolf–Rayet (WR) star. Such stars are massive as well, but toward the end of their life they become tumultuous as internal instabilities lead them to hurriedly shed mass in ...