The Structure and Morphology of the Ionized Gas in Starburst Galaxies: NGC 5253/5236

1999 ◽  
Vol 118 (2) ◽  
pp. 797-816 ◽  
Author(s):  
Daniela Calzetti ◽  
Christopher J. Conselice ◽  
John S. Gallagher III ◽  
Anne L. Kinney
Keyword(s):  
Starburst Galaxies ◽  
Ionized Gas ◽  
Structure And Morphology

scholarly journals Is there any pristine gas in nearby starburst galaxies?

2008 ◽  
Vol 4 (S255) ◽  
pp. 278-282
Author(s):  
Vianney Lebouteiller ◽  
Daniel Kunth
Keyword(s):  
Chemical Composition ◽  
Starburst Galaxies ◽  
Lower Threshold ◽  
Ionized Gas ◽  
Neutral Gas

AbstractWe derive the chemical composition of the neutral gas in the blue compact dwarf (BCD) Pox 36 observed with FUSE. Metals (N, O, Ar, and Fe) are underabundant as compared to the ionized gas associated with H ii regions by a factor ~7. The neutral gas, although it is not pristine, is thus probably less chemically evolved than the ionized gas. This could be due to different dispersal and mixing timescales. Results are compared to those of other BCDs observed with FUSE. The metallicity of the neutral gas in BCDs seems to reach a lower threshold of ~1/50 Z⊙ for extremely-metal poor galaxies.

scholarly journals Radio Recombination Lines from Starburst Galaxies: High and Low Density Ionized Gas

2002 ◽  
Vol 199 ◽  
pp. 243-244
Author(s):  
N.R. Mohan ◽  
K.R. Anantharamaiah ◽  
W.M. Goss
Keyword(s):  
Flux Density ◽  
Hii Regions ◽  
Starburst Galaxies ◽  
High Density ◽  
The Other ◽  
Low Density ◽  
Ionized Gas ◽  
Density Measurements ◽  
Radio Recombination Lines ◽  
Upper Limits

Radio recombination lines (RRL) at 8 GHz and 15 GHz detected from four starburst galaxies are shown to arise in compact high density HII regions, which are undetectable below ∼4 GHz. Detection of an RRL at 1.4 GHz towards one galaxy and upper limits in the other three are consistent with the presence of an equal amount of low density diffuse gas. Continuum flux density measurements using the GMRT will be important in constraining the properties of the diffuse gas.

scholarly journals The Ionized Gas in Local Starburst Galaxies: Global and Small-Scale Feedback from Star Formation

2004 ◽  
Vol 127 (3) ◽  
pp. 1405-1430 ◽  
Author(s):  
Daniela Calzetti ◽  
Jason Harris ◽  
John S. Gallagher III ◽  
Denise A. Smith ◽  
Christopher J. Conselice ◽  
...  
Keyword(s):  
Star Formation ◽  
Starburst Galaxies ◽  
Small Scale ◽  
Ionized Gas

scholarly journals NIR Line Observations of Starburst Galaxies

1999 ◽  
Vol 186 ◽  
pp. 286-286
Author(s):  
H. Sugai ◽  
M.A. Malkan ◽  
M.J. Ward ◽  
R.I. Davies ◽  
I.S. McLean
Keyword(s):  
Line Emission ◽  
Starburst Galaxies ◽  
Emission Lines ◽  
Ionized Gas ◽  
The Galaxy ◽  
Component C ◽  
Band Spectra ◽  
Marginal Detection ◽  
The Continuum ◽  
K Band

We have obtained images of the H2and Brγ emission lines in the galaxy interacting system NGC 3690 + IC 694. We have also obtained simultaneous H- and K-band spectra for three of its 2μm continuum peaks. The most detectable line emission is concentrated at the continuum peaks. Therefore, the emission lines as well as stellar absorption lines can be used as tracers of the activity in the nuclei themselves. From the strong Brγ and marginal detection of Br10 at the nucleus of IC 694, we derive a large extinction for the fully ionized gas in this nucleus. If we adopt this extinction also for the [Fe II]1.64μm emission, the extinction-corrected [Fe II]1.64μm/Brγ ratio will lie at the higher end of starburst galaxies, and is typical for AGNs or AGN/starburst composites. This might imply that many SNRs are involved in the starburst at this nucleus, unless it includes an AGN. All of our results for Component C, including very little CO absorption in the K band, a largeEW(Brγ), a small H2/Brγ ratio, the effective temperature (Teff≃ 40,000K) derived from HeI 1.70μm/Br10 and HeI 2.06μm/Brγ, are consistent with a very young starburst.

Ionized Gas in the Halos of Edge-on Starburst Galaxies: Evidence for Supernova-driven Superwinds

1996 ◽  
Vol 462 ◽  
pp. 651 ◽  
Author(s):  
Matthew D. Lehnert ◽  
Timothy M. Heckman
Keyword(s):  
Starburst Galaxies ◽  
Ionized Gas

Evidence for large-scale winds from starburst galaxies. I - The nature of the ionized gas in M82 and NGC 253

1987 ◽  
Vol 93 ◽  
pp. 264 ◽  
Author(s):  
Patrick J. McCarthy ◽  
Wil van Breugel ◽  
Timothy Heckman
Keyword(s):  
Large Scale ◽  
Starburst Galaxies ◽  
Ionized Gas

Ionized gas in the halos of edge-on, starburst galaxies: Data and results

1995 ◽  
Vol 97 ◽  
pp. 89 ◽  
Author(s):  
Matthew D. Lehnert ◽  
Timothy M. Heckman
Keyword(s):  
Starburst Galaxies ◽  
Ionized Gas

scholarly journals CONSTRAINING STELLAR FEEDBACK: SHOCK-IONIZED GAS IN NEARBY STARBURST GALAXIES

2013 ◽  
Vol 777 (1) ◽  
pp. 63 ◽  
Author(s):  
Sungryong Hong ◽  
Daniela Calzetti ◽  
John S. Gallagher ◽  
Crystal L. Martin ◽  
Christopher J. Conselice ◽  
...  
Keyword(s):  
Starburst Galaxies ◽  
Ionized Gas ◽  
Stellar Feedback

The Influence of Structure and Morphology on Ion Permeation Behaviour in Commercial Silicone Hydrogel Contact Lenses

2019 ◽  
Author(s):  
Virginia Saez-Martinez ◽  
Aisling Mann ◽  
Fiona Lydon ◽  
Frank Molock ◽  
Siân A. Layton ◽  
...  
Keyword(s):  
Contact Lenses ◽  
Ion Permeation ◽  
Silicone Hydrogel ◽  
Structure And Morphology

On the Structure and Morphology of the “Diffuse Ionized Medium” in Star‐forming Galaxies

1999 ◽  
Vol 515 (1) ◽  
pp. 97-107 ◽  
Author(s):  
Jing Wang ◽  
Timothy M. Heckman ◽  
Matthew D. Lehnert
Keyword(s):  
Star Forming ◽  
Structure And Morphology ◽  
Diffuse Ionized Medium
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