H [CSC]ii[/CSC] Regions and Diffuse Ionized Gas in 11 Nearby Spiral Galaxies

2002 ◽  
Vol 124 (6) ◽  
pp. 3118-3134 ◽  
Author(s):  
David A. Thilker ◽  
René A. M. Walterbos ◽  
Robert Braun ◽  
Charles G. Hoopes
Keyword(s):  
Spiral Galaxies ◽  
Ionized Gas ◽  
Diffuse Ionized Gas

scholarly journals THE RELATIONSHIP BETWEEN THE DENSE NEUTRAL AND DIFFUSE IONIZED GAS IN THE THICK DISKS OF TWO EDGE-ON SPIRAL GALAXIES

2013 ◽  
Vol 145 (3) ◽  
pp. 62 ◽  
Author(s):  
Katherine M. Rueff ◽  
J. Christopher Howk ◽  
Marissa Pitterle ◽  
Alec S. Hirschauer ◽  
Andrew J. Fox ◽  
...  
Keyword(s):  
Spiral Galaxies ◽  
Ionized Gas ◽  
Diffuse Ionized Gas ◽  
Thick Disks ◽  
The Relationship

Diffuse Ionized Gas in Spiral Galaxies: Probing Lyman Continuum Photon Leakage From H II Regions?

1996 ◽  
Vol 111 ◽  
pp. 2265 ◽  
Author(s):  
Annette M. N. Ferguson ◽  
Rosemary F. G. Wyse ◽  
J. S., III Gallagher ◽  
Deidre A. Hunter
Keyword(s):  
Spiral Galaxies ◽  
H Ii Regions ◽  
Ionized Gas ◽  
Lyman Continuum ◽  
Diffuse Ionized Gas

Far‐Ultraviolet and Hα Imaging of Nearby Spiral Galaxies: The OB Stellar Population in the Diffuse Ionized Gas

2001 ◽  
Vol 559 (2) ◽  
pp. 878-891 ◽  
Author(s):  
Charles G. Hoopes ◽  
Rene A. M. Walterbos ◽  
Gregory D. Bothun
Keyword(s):  
Stellar Population ◽  
Spiral Galaxies ◽  
Ionized Gas ◽  
Diffuse Ionized Gas ◽  
Far Ultraviolet

scholarly journals Diffuse Ionized Gas in Spiral Galaxies and the Disk-Halo Interaction

2012 ◽  
Vol 56 ◽  
pp. 213-220 ◽  
Author(s):  
R.J. Reynolds ◽  
L.M. Haffner ◽  
G.J. Madsen ◽  
K. Wood ◽  
A.S. Hill
Keyword(s):  
Spiral Galaxies ◽  
Ionized Gas ◽  
Diffuse Ionized Gas

scholarly journals Diffuse Ionized Gas in Halos of Spiral Galaxies

1997 ◽  
Vol 166 ◽  
pp. 525-538
Author(s):  
Ralf-Jürgen Dettmar
Keyword(s):  
Large Scale ◽  
Spiral Galaxies ◽  
Optical Emission ◽  
Radio Continuum ◽  
Formation Processes ◽  
Ionized Gas ◽  
Ob Stars ◽  
Diffuse Ionized Gas ◽  
Model Predictions ◽  
External Galaxies

AbstractOver the last couple of years Diffuse Ionized Gas (DIG) has been identified as an important constituent of the interstellar medium (ISM) in the halos of spiral galaxies. Imaging in and spectroscopy of optical emission lines allow us to study the distribution and excitation of this gas with a spatial resolution not achievable for other phases of the ISM in external galaxies. Its origin and ionization is under debate and give important constraints for models of the ISM in general and on the large scale exchange of matter between disk and halo in particular. This review summarizes more recent observational results and compares them with model predictions. The data available now demonstrate that the presence of DIG in the disk-halo interface of spiral galaxies is related to star formation processes in the underlying disk. While photoionization by OB stars in the disk seems a viable source for the power required to ionize the DIG, additional processes are needed to explain some of the spectral features. The observed correlation with properties of the non-thermal radio continuum indicate that magnetic fields and cosmic rays could play a role for the physics of this medium.

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