arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0909.2065astro-ph.GA
收藏

超新星遗迹G357 .7+0.3的风扫云和可能的恒星形成

Wind-Swept Clouds and Possible Triggered Star-Formation associated with the Supernova Remnant G357.7+0.3

J. P. Phillips, G. Ramos-Larios, J. A. Perez-Grana

摘要:

我们提出了超新星遗迹(SNR)G357.7+0.3和附近的分子云之间的相互作用的证据,导致风扫结构和明亮的发射边缘的形成。这些特征在可见光波段无法观测到,但在使用斯皮策太空望远镜(SST)进行的中红外(MIR)测绘中清晰可见。对这些云之一的明亮彗星结构G357.46+0.60的分析表明,它在5.8和8.0微米的光度带中含有强烈的多环芳烃(PAH)发射特征,并且这些特征在相对较小的空间尺度上变化很大。这个源似乎也包含一个明亮的边缘结构内的YSO,与1.25和24微米之间的急剧上升的光谱。最后,值得注意的是,另一个锥形发射区似乎与Mira V1139 Sco有关,并建议这可能代表Mira流出与SNR相互作用的情况。

英文摘要:

We present evidence for interaction between the supernova remnant (SNR) G357.7+0.3 and nearby molecular clouds, leading to the formation of wind-swept structures and bright emission rims. These features are not observed at visual wavelengths, but are clearly visible in mid-infrared (MIR) mapping undertaken using the Spitzer Space Telescope (SST). Analysis of one of these clouds, the bright cometary structure G357.46+0.60, suggests that it contains strong polycyclic aromatic hydrocarbon (PAH) emission features in the 5.8 and 8.0 microns photometric bands, and that these are highly variable over relatively small spatial scales. This source also appears to contain a YSO within the bright rim structure, with a steeply rising spectrum between 1.25 and 24 microns. Finally, it is noted that a further, conical emission region appears to be associated with the Mira V1139 Sco, and it is suggested that this may represent the case of a Mira outflow interacting with a SNR.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑