Sher 25とは 意味・読み方・使い方

Sher 25 is an old blue supergiant star located approximately 20,000 light years from the Sun in the H II region NGC 3603 of the Milky Way galaxy. It's a spectral type B1.5Iab (Blue Supergiant) star with an apparent magnitude is 12.2, and located at right ascension 11^h 15^m 7.8^s, declination -61° 15′ 17″ in the constellation Carina. It is commonly thought that Sher 25 is near the point of going supernova, as it has recently thrown off matter in a pattern similar to that of the supernova 1987A in the Large Magellanic Cloud, with a circumstellar ring and bipolar outflow filaments. Its mass is equivalent to 60 times the mass of our Sun (solar masses). Most stars that are the size of Sher 25 may leave a pulsar remnant. The temperature is estimated to be about 30,000 Kelvin (54,000 Fahrenheit)