期刊
ASTRONOMICAL JOURNAL
卷 131, 期 4, 页码 2140-2163出版社
IOP PUBLISHING LTD
DOI: 10.1086/500532
关键词
galaxies : star clusters; H (II) regions; ISM : individual (30 Doradus); stars : winds, outflows; supernova remnants; X-rays : ISM
We present an X-ray tour of diffuse emission in the 30 Doradus star-forming complex in the Large Magellanic Cloud using high spatial resolution X-ray images and spatially resolved spectra obtained with the Advanced CCD Imaging Spectrometer on board the Chandra X-Ray Observatory. The dominant X-ray feature of the 30 Doradus nebula is the intricate network of diffuse emission generated by interacting stellar winds and supernovae working together to create vast superbubbles filled with hot plasma. We construct maps of the region showing variations in plasma temperature (T = 3-9 million degrees), absorption [N-H (1-6) x 10(21) cm(-2)], and absorption-corrected X-ray surface brightness [S-X = (3-126) x 10(31) ergs s(-1) pc(-2)]. Enhanced images reveal the pulsar wind nebula in the composite supernova remnant N157B, and the Chandra data show spectral evolution from nonthermal synchrotron emission in the N157B core to a thermal plasma in its outer regions. In a companion paper we show that R136, the central massive star cluster, is resolved at the arcsecond level into almost 100 X-ray sources. Through X-ray studies of 30 Doradus the complete life cycle of such a massive stellar cluster can be revealed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据