来源:http://coolcosmos.ipac.caltech.e ... ss_rcw38/index.html
RCW 38 is at a distance of ~1.7 kpc (~5500 light years) from us, near the famous Vela supernova remnant and the Gum nebula. This starforming region contains a number of highly massive O stars embedded in a dense obscuring cloud. The stars are about 2 million years old, indicating that star formation is ongoing is this relatively young region. As seen in the 2MASS near-infrared Image mosaic, the nebulosity associated with RCW 38 is extensive across a large area, with dust lanes and patches running throughout. Other, smaller obscured star-forming regions are nearby, with less-obscured young, massive stars and associated reflection nebulae also in the field. Image credit: 2MASS/R. Hurt
RCW 38星团位于船帆座 (Vela)内,包含数千颗形成不到100万年的恒星。星团有5光年的范围,并有弥漫的星云笼罩。
RCW38的简介,译文来源:http://www.cpus.gov.cn/zlg/yuzhou/ztf36.htm
恒星通常是从混着尘埃的云气中诞生出来。恒星诞生区RCW38内的疏散星团,年龄实在非常的轻,它还包在厚厚的尘埃云内,因此恒星所发出的可见光会被尘埃吸收,所以RCW38内的星团通常是隐而不见的。不过尘埃吸收红外光的效率较差,所以在红外光波段观测RCW38时,就可以看到藏在尘埃里的恒星。下面这张经过处理的代表色马赛克影像,是由二微米巡天计划相机所拍摄的。在这张红外光波段影像里,可以看见星团内许多明亮的蓝色亮星、一团团明亮的发射星云、以及壮观的黝黑尘埃带。RCW38位于南天的船帆座内。
^-^为方便大家打开阅读就不贴大图了,如果想看大图可以下载附件。注:分卷压缩,全部下载后才能解压。
[ 本帖最后由 寻找拉玛 于 2008-2-15 15:20 编辑 ] |
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