NGC 4151核区亚秒尺度HI
天体物理学
2007-05-23 v1
摘要
我们报告了对NGC 4151射电喷流和核区HI吸收的灵敏、高分辨率21-cm VLBA+VLA观测。25毫弧秒（1.6 pc）分辨率的连续光谱图像揭示了高度准直的射电喷流，位于此前MERLIN和VLA所见的离散成分之下。检测到对整个3 pc范围内的连续光成分的空间和动力学复杂的HI吸收，后者根据Ulvestad等人预测的包含AGN的成分相符。相反，我们建议该吸收成分位于东侧反喷流的组成部分，将其排除作为AGN位置的候选。
引用
@article{arxiv.astro-ph/0012229,
title = {Subparsec-scale HI in the nucleus of NGC 4151},
author = {C. G. Mundell and J. M. Wrobel and A. Pedlar and J. F. Gallimore},
journal= {arXiv preprint arXiv:astro-ph/0012229},
year = {2007}
}
备注
2 pages, 1 figure, to appear in proceedings of IAU Symposium 205: Galaxies and their Constituents at the Highest Angular Resolutions, Manchester UK, August 2000. To be published by ASP, edited by R. Schilizzi, S. Vogel, F. Paresce, M. Elvis