Shocks as a secondary source of ionization in diffuse ionized gas halos

被引：0
|
作者：
Collins, JA [1 ]
Rand, RJ [1 ]
机构：
[1] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA
来源：
GAS AND GALAXY EVOLUTION: A CONFERENCE IN HONOR OF THE 20TH ANNIVERSARY OF THE VLA | 2001年 / 240卷
关键词：
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Using spectroscopic data for the edge-on spiral NGC 5775, discussed in a paper by Rand in these proceedings, we attempt to address the issue of how Diffuse Ionized Gas (DIG) halos are energized. Data are interpreted in the context of composite photo-ionization/shock models. We find that an increasing contribution from shocks with z is necessary to explain observed line ratios. In addition, the runs of [O-III]/Halpha vs. z in NGC 5775 suggest that shocks make a greater contribution in regions where DIG is of a filamentary morphology.
引用
收藏
页码：392 / 393
页数：2
相关论文
共 50 条
  • [1] Kinematics of diffuse ionized gas halos
    Rand, RJ
    Extra-Planar Gas, 2005, 331 : 163 - 169
  • [2] Further spectroscopy of the diffuse ionized gas in NGC 891 and evidence for a secondary source of ionization
    Rand, RJ
    ASTROPHYSICAL JOURNAL, 1998, 501 (01): : 137 - 152
  • [3] Physical conditions in diffuse ionized gas halos
    Collins, JA
    Rand, RJ
    GALAXY DISKS AND DISK GALAXIES, 2001, 230 : 307 - 308
  • [4] Diffuse Ionized Gas Halos Seen with HST
    Dettmar, Ralf-Juergen
    Rossa, Joern
    Dahlem, Michael
    van der Marel, Roeland
    IMPACT OF HST ON EUROPEAN ASTRONOMY, 2010, : 161 - 163
  • [5] Diffuse ionized gas in halos of spiral galaxies
    Ralf-Jürgen Dettmar
    Astrophysics and Space Science, 2004, 289 : 349 - 357
  • [6] Diffuse ionized gas in halos of spiral galaxies
    Dettmar, RJ
    ASTROPHYSICS AND SPACE SCIENCE, 2004, 289 (3-4) : 349 - 357
  • [7] Ionization sources and physical conditions in the diffuse ionized gas halos of four edge-on galaxies
    Collins, JA
    Rand, RJ
    ASTROPHYSICAL JOURNAL, 2001, 551 (01): : 57 - 71
  • [8] THE IONIZATION OF THE DIFFUSE IONIZED-GAS
    DOMGORGEN, H
    MATHIS, JS
    ASTROPHYSICAL JOURNAL, 1994, 428 (02): : 647 - 653
  • [9] Kinematics of diffuse ionized gas halos: A ballistic model of halo rotation
    Collins, JA
    Benjamin, RA
    Rand, RJ
    ASTROPHYSICAL JOURNAL, 2002, 578 (01): : 98 - 108
  • [10] Spectroscopy of diffuse ionized gas in halos of selected edge-on galaxies
    Tüllmann, R
    Dettmar, RJ
    ASTRONOMY & ASTROPHYSICS, 2000, 362 (01) : 119 - 132
12345