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WR 140 is a visually moderately bright Wolf–Rayet star placed within the spectroscopic binary star, SBC9 1232, [7] whose primary star is an evolved spectral class O4–5 star. [7] It is located in the constellation of Cygnus , lying in the sky at the centre of the triangle formed by Deneb , γ Cygni and δ Cygni .
NGC 6888 (Crescent Nebula) NGC 2359 (Thor's Helmet Nebula) M1-67 (Luminous Blue Variable Nebula) NGC 3199 (Nebula around WR 18) These nebulae exhibit intricate structures revealed in visible light as well as infrared, X-ray, and other wavelengths, providing insight into the powerful stellar winds and evolutionary processes around Wolf-Rayet stars.
NGC 2359 (also known as Thor's Helmet) is an emission nebula [3] in the constellation Canis Major. The nebula is approximately 3,670 parsecs (11.96 thousand light years) away and 30 light-years in size. The central star is the Wolf-Rayet star WR7, an extremely hot star thought to be in a brief pre-supernova stage of evolution.
WR 124 is a Wolf–Rayet star in the constellation of Sagitta surrounded by a ring nebula of expelled material known as M1-67. [9] It is one of the fastest runaway stars in the Milky Way with a radial velocity around 200 km/s. It was discovered by Paul W. Merrill in 1938, identified as a high-velocity Wolf–Rayet star. [10]
It is located 1.65 billion light years away from Earth and is a Seyfert galaxy and an ultraluminous infrared galaxy. [1] IRAS 01003-2238 is also classified as a Wolf-Rayet galaxy , making the object one of the most distant known.
WR 135 is a variable Wolf-Rayet star located around 6,000 light years away from Earth in the constellation of Cygnus, surrounded by a faint bubble nebula blown by the intense radiation and fast wind from the star. It is just over four times the radius of the sun, but due to a temperature of 63,000 K it is 250,000 times as luminous as the sun.
NGC 588 is a prominent, giant H II ionized [5] diffuse nebula located in the outskirts of the galaxy Messier 33's spiral arms, within the Triangulum constellation. [6] [4] The nebula has two Wolf-Rayet stars, NGC 588-UIT 008 and NGC 588-MC3 and a fairly large population of main sequence stars of 2 to 20 solar masses.
VFTS 682 is a Wolf–Rayet star in the Large Magellanic Cloud.It is located over 29 parsecs (95 ly) north-east of the massive cluster R136 in the Tarantula Nebula. [5] It is 138 times the mass of the Sun and 3.2 million times more luminous, which makes it one of the most massive and most luminous stars known.