Nearby galaxies. III. Gas–to–dust ratio in the interstellar medium of spiral and dwarf irregular galaxies

1993 ◽  
Vol 314 (5) ◽  
pp. 361-370 ◽  
Author(s):  
K. H. Schmidt ◽  
T. Boller
Keyword(s):  
Interstellar Medium ◽  
Irregular Galaxies ◽  
Nearby Galaxies ◽  
Dwarf Irregular Galaxies

scholarly journals Supershells

1988 ◽  
Vol 101 ◽  
pp. 447-459
Author(s):  
Richard McCray
Keyword(s):  
Star Formation ◽  
Radio Emission ◽  
Interstellar Medium ◽  
Milky Way ◽  
Disk Galaxy ◽  
Interstellar Gas ◽  
Irregular Galaxies ◽  
Nearby Galaxies ◽  
Gas Layer

AbstractRepeated supernovae from an OB association will, in a few ×107 yr, create a cavity of coronal gas in the interstellar medium, with radius > 100 pc, surrounded by a dense expanding shell of cool interstellar gas. Such a cavity will likely burst through the gas layer of a disk galaxy. Such holes and “supershells” have been observed in optical and H I radio emission maps of the Milky Way and other nearby galaxies. The gas swept up in the supershell is likely to become gravitationally unstable, providing a mechanism for propagating star formation that may be particularly effective in irregular galaxies.

Interstellar Medium Abundances in Sculptor Group Dwarf Irregular Galaxies

2003 ◽  
Vol 125 (2) ◽  
pp. 610-625 ◽  
Author(s):  
Evan D. Skillman ◽  
Stéphanie Côté ◽  
Bryan W. Miller
Keyword(s):  
Interstellar Medium ◽  
Irregular Galaxies ◽  
Dwarf Irregular Galaxies

H I POWER SPECTRA AND THE TURBULENT INTERSTELLAR MEDIUM OF DWARF IRREGULAR GALAXIES

2012 ◽  
Vol 754 (1) ◽  
pp. 29 ◽  
Author(s):  
Hong-Xin Zhang ◽  
Deidre A. Hunter ◽  
Bruce G. Elmegreen
Keyword(s):  
Interstellar Medium ◽  
Power Spectra ◽  
Irregular Galaxies ◽  
Dwarf Irregular Galaxies

scholarly journals Star Formation and the Interstellar Medium in Four Dwarf Irregular Galaxies

2003 ◽  
Vol 592 (1) ◽  
pp. 111-128 ◽  
Author(s):  
L. M. Young ◽  
L. van Zee ◽  
K. Y. Lo ◽  
R. C. Dohm‐Palmer ◽  
Michelle E. Beierle
Keyword(s):  
Star Formation ◽  
Interstellar Medium ◽  
Irregular Galaxies ◽  
Dwarf Irregular Galaxies

scholarly journals Booms and Busts: the Burstiness of Star Formation in Nearby Dwarf Galaxies

2010 ◽  
Vol 27 (3) ◽  
pp. 234-241 ◽  
Author(s):  
A. A. Cole
Keyword(s):  
Galaxy Evolution ◽  
Local Group ◽  
Dwarf Galaxies ◽  
Starburst Galaxy ◽  
Ic 10 ◽  
Irregular Galaxies ◽  
Magnitude Diagram ◽  
Nearby Galaxies ◽  
Dwarf Irregular Galaxies ◽  
The Universe

AbstractIn this review I summarise recent advances in our understanding of the importance of starburst events to the evolutionary histories of nearby galaxies. Ongoing bursts are easily diagnosed in emission-line surveys, but assessing the timing and intensity of fossil bursts requires more effort, usually demanding color–magnitude diagrams or spectroscopy of individual stars. For ages older than ∼1 Gyr, this type of observation is currently limited to the Local Group and its immediate surroundings. However, if the Local Volume is representative of the Universe as a whole, then studies of the age and metallicity distributions of star clusters and resolved stellar populations should give statistical clues as to the frequency and importance of bursts to the histories of galaxies in general. Based on starburst statistics in the literature and synthetic colour-magnitude diagram studies of Local Group galaxies, I attempt to distinguish between systemic starbursts that strongly impact galaxy evolution and stochastic bursts that can appear impressive but are ultimately of little significance on gigayear timescales. As a specific case, it appears as though IC 10, the only starburst galaxy in the Local Group, falls into the latter category and is not fundamentally different from other nearby dwarf irregular galaxies.

scholarly journals Luminous Infrared Sources in the Local Group: Identifying the Missing Links in Massive Star Evolution

2014 ◽  
Vol 9 (S307) ◽  
pp. 92-93
Author(s):  
N. Britavskiy ◽  
A. Z. Bonanos ◽  
A. Mehner
Keyword(s):  
Massive Star ◽  
Local Group ◽  
Massive Stars ◽  
Star Evolution ◽  
Irregular Galaxies ◽  
Nearby Galaxies ◽  
Massive Star Evolution ◽  
Infrared Sources ◽  
Dwarf Irregular Galaxies

AbstractWe present the first systematic survey of dusty massive stars (RSGs, LBVs, sgB[e]) in nearby galaxies, with the goal of understanding their importance in massive star evolution. Using the fact that these stars are bright in mid-infrared colors due to dust, we provide a technique for selecting and identifying dusty evolved stars based on the results of Bonanos et al. (2009, 2010), Britavskiy et al. (2014), and archival Spitzer/IRAC photometry. We present the results of our spectroscopic follow-up of luminous infrared sources in the Local Group dwarf irregular galaxies: Pegasus, Phoenix, Sextans A and WLM. The survey aims to complete the census of dusty massive stars in the Local Group.

3D numerical global simulations of cosmic ray driven dynamo in barred and dwarf irregular galaxies

2014 ◽  
Author(s):  
Natalia Nowak ◽  
Katarzyna Otmianowska-Mazur ◽  
Katarzyna Kulpa-Dybel ◽  
Hubert Siejkowski ◽  
Marian Soida ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Irregular Galaxies ◽  
Dwarf Irregular Galaxies
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