M36(NGC1960)位於御夫座, 又稱風車星團(pinwheel cluster), 是御夫座三個疏散星團中最細小的一個, 它離我們約四千一百光年, 直徑約十四光年, 在這範圍目前找到屬它的星約有六十顆。它是一個相當年青的星團, 估計年紀是二千五百萬歲。2008年有包括台灣天文學者顏吉鴻發表的報告, 指西梅茲147(Simeis147, 即小弟目前頭像)的那顆超新星, 很大機會是來自M36 。
from: http://www.ifa.hawaii.edu/publications/ ... 08-201.pdfNGC 1960 has recently attracted attention as the most likely origin of a massive OB star that exploded about 40,000 yr ago, creating the supernova remnant Simeis 147, a large ( 3◦ diameter), ..... With a spatial separation of only 220 pc from Simeis 147, NGC 1960 is the closest candidate cluster. Assuming an age of NGC 1960 of between 10 and 40 Myr, this distance would be transversed if the progenitor OB star was moving away from NGC 1960 with a velocity of between 5 and 20 km sec−1.
Takahashi Sky90+reducer FL400mm f/4.4, SBIG ST8300C, Paramount GTS, Autoguided @Siding Spring, NSW
Colour 2mins X 5, PixInsight, PS
