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WR 102 is a Wolf–Rayet star in the constellation Sagittarius, an extremely rare star on the WO oxygen sequence. It is a luminous and very hot star, highly evolved and close to exploding as a supernova.
Star name Effective Temperature ()Mass (M ☉) Luminosity (L ☉) Spectral type Distance (light-years)Ref. WR 102: 200,000 16.1 380,000 WO2: 8,610 [1] [2] [3]WR 142: 200,000 28.6 912,000
WR 102c is surrounded by a shell of nebulosity which contains dust made even hotter than the star itself by intense radiation. The nebula also includes nearly 1 M ☉ of molecular hydrogen and around 10 M ☉ of ionised hydrogen, all expelled from the star. [4] There is a suggestion that WR 102c may be a binary star.
More than a hundred dolphins have been found dead in the Brazilian Amazon amid an historic drought and record-high water temperatures that in places have exceeded 102 degrees Fahrenheit.
WR 102ea is a Wolf–Rayet star in the Sagittarius constellation. It is the third most luminous star in the Quintuplet cluster after WR 102hb . With a luminosity of 2,500,000 times solar , it is also one of the most luminous stars known.
Narrowband infrared observations of several spectral features around 2 μm showed that WR 102ka was a Wolf Rayet star with a likely classification of WN10. [7] It was also proposed as a possible luminous blue variable. [8] The Spitzer Space Telescope observed WR 102ka at wavelengths of 3.6 μm, 8 μm, and 24 μm on April 20, 2005. These ...
The refractive index of water at 20 °C for visible light is 1.33. [1] The refractive index of normal ice is 1.31 (from List of refractive indices).In general, an index of refraction is a complex number with real and imaginary parts, where the latter indicates the strength of absorption loss at a particular wavelength.
Factors that could have played a role in spiking the water temperature above 100 degrees include: Air temperatures in the mid-to-upper 90s. Weak winds across the region of less than 10 mph.