利用SPIRE观测椭圆星系M86的尘埃形态
宇宙学与河外天体物理
2015-05-18 v1
摘要
我们展示了赫歇尔空间天文台SPIRE仪器在250-500微米波段对巨椭圆星系M86的观测结果，并研究了已分辨冷尘埃辐射的分布及其与其他星系示踪物的关系。SPIRE图像揭示了三种尘埃成分：来自中心区域的辐射；一条南北延伸的尘埃带；以及东南方向10千秒差距处的一个明亮发射特征。我们估计大约10^6太阳质量的尘埃与原子氢和电离氢在空间上重合，这些尘埃来源于邻近旋涡星系NGC4438因近期与M86的潮汐相互作用而被剥离的物质。冷气体成分的气尘比范围约为20-80。我们讨论了尘埃特征的不同加热机制。
引用
@article{arxiv.1005.1597,
title = {The dust morphology of the elliptical Galaxy M86 with SPIRE},
author = {H. L. Gomez and M. Baes and L. Cortese and M. W. L. Smith and A. Boselli and L. Ciesla and G. J. Bendo and M. Pohlen and S. di Serego Alighieri and R. Auld and M. J. Barlow and J. J. Bock and M. Bradford and V. Buat and N. Castro-Rodriguez and P. Chanial and S. Charlot and D. L. Clements and A. Cooray and D. Cormier and J. I. Davies and E. Dwek and S. Eales and D. Elbaz and M. Galametz and F. Galliano and W. K. Gear and J. Glenn and M. Griffin and S. Hony and K. G. Isaak and L. R. Levenson and N. Lu and S. Madden and B. O'Halloran and K. Okumura and S. Oliver and M. J. Page and P. Panuzzo and A. Papageorgiou and T. J. Parkin and I. Perez-Fournon and N. Rangwala and E. E. Rigby and H. Roussel and A. Rykala and N. Sacchi and M. Sauvage and M. R. P. Schirm and B. Schulz and L. Spinoglio and S. Srinivasan and J. A. Stevens and M. Symeonidis and M. Trichas and M. Vaccari and L. Vigroux and C. D. Wilson and H. Wozniak and G. S. Wright and W. W. Zeilinger},
journal= {arXiv preprint arXiv:1005.1597},
year = {2015}
}
备注
5 pages and 3 figures, accepted for A & A Herschel special issue