scholarly journals A HIGH SPATIAL RESOLUTION MID-INFRARED SPECTROSCOPIC STUDY OF THE NUCLEI AND STAR-FORMING REGIONS IN LUMINOUS INFRARED GALAXIES

2010 ◽  
Vol 711 (1) ◽  
pp. 328-349 ◽  
Author(s):  
Tanio Díaz-Santos ◽  
Almudena Alonso-Herrero ◽  
Luis Colina ◽  
Christopher Packham ◽  
N. A. Levenson ◽  
...  
Keyword(s):  
Spectroscopic Study ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Infrared Spectroscopic Study ◽  
Infrared Galaxies ◽  
Mid Infrared ◽  
Star Forming ◽  
Luminous Infrared Galaxies ◽  
Star Forming Regions ◽  
Infrared Spectroscopic

High Spatial Resolution T-ReCS Mid-Infrared Imaging of Luminous Infrared Galaxies

2006 ◽  
Vol 652 (2) ◽  
pp. L83-L87 ◽  
Author(s):  
Almudena Alonso-Herrero ◽  
Luis Colina ◽  
Christopher Packham ◽  
Tanio Díaz-Santos ◽  
George H. Rieke ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Infrared Imaging ◽  
High Spatial Resolution ◽  
Infrared Galaxies ◽  
Mid Infrared ◽  
Luminous Infrared Galaxies

scholarly journals A Study of the Distribution of Star-forming Regions in Luminous Infrared Galaxies by Means of H Imaging Observations

2004 ◽  
Vol 127 (2) ◽  
pp. 736-757 ◽  
Author(s):  
T. Hattori ◽  
M. Yoshida ◽  
H. Ohtani ◽  
H. Sugai ◽  
T. Ishigaki ◽  
...  
Keyword(s):  
Infrared Galaxies ◽  
Star Forming ◽  
Luminous Infrared Galaxies ◽  
Star Forming Regions

scholarly journals Luminous Infrared Galaxies in a Merging Sequence: ISO Observations

1999 ◽  
Vol 186 ◽  
pp. 282-282 ◽  
Author(s):  
C.-Y. Hwang ◽  
K.Y. Lo ◽  
Y. Gao ◽  
R.A. Gruendl ◽  
N.-Y. Lu
Keyword(s):  
High Spatial Resolution ◽  
Molecular Gas ◽  
Infrared Images ◽  
Infrared Galaxies ◽  
Space Observatory ◽  
Infrared Space Observatory ◽  
Mid Infrared ◽  
Luminous Infrared Galaxies ◽  
Physical Conditions ◽  
Galaxy Interaction

We report mid-infrared images of several luminous infrared galaxies (LIGs) taken with ISOCAM on the Infrared Space Observatory (ISO). These LIGs were chosen to represent different phases of a merger sequence of galaxy-galaxy interaction with special emphasis on early/intermediate stages of merging. The molecular gas distribution of these LIGs has also been mapped at high spatial resolution (see contribution by Gao et al., this volume). The goal is to do a synoptic study of the evolution of physical conditions in these LIGs along the merger sequence.

scholarly journals Luminous IR Galaxies: Evolution and Molecular Gas

1997 ◽  
Vol 159 ◽  
pp. 439-440 ◽  
Author(s):  
Yu Gao
Keyword(s):  
Molecular Gas ◽  
Infrared Galaxies ◽  
Galaxy Interactions ◽  
Merging Galaxies ◽  
Star Forming ◽  
Luminous Infrared Galaxies ◽  
Star Forming Regions ◽  
Ir Sources ◽  
Order Of Magnitude ◽  
The Universe

Luminous infrared galaxies (LIRGs), denned by the criterion LIR ≳ 2 × 1011L⊙ (for H0=75 kms−1 Mpc−1), are the most powerful IR sources in the Universe, with most of their emission (~ 90%) in the far-IR. Most LIRGs are interacting/merging galaxies with large amounts of molecular gas as revealed by CO surveys (Sanders et al. 1991; Solomon et al. 1996). However, whether starbursts or dust-enshrouded AGNs/QSOs dominate the IR luminosity is not resolved.CO may not trace the active star-forming regions where gas density is more than one order of magnitude higher than the average. Dense molecular gas is better traced by high dipole-moment molecules like HCN and CS (e.g., Nguyen-Q-Rieu et al. 1992; Gao & Solomon 1996). Therefore, it is essential to survey HCN emission in a large sample of LIRGs to better reveal the nature of LIRGs. We here study IR and molecular gas properties vs. galaxy-galaxy interactions in LIRGs over various merging phases to trace their evolution and explore some links among interactions, starbursts, and AGN phenomena.

scholarly journals A Very Large Array Survey of Luminous Extranuclear Star-forming Regions in Luminous Infrared Galaxies in GOALS

2019 ◽  
Vol 881 (1) ◽  
pp. 70 ◽  
Author(s):  
S. T. Linden ◽  
Y. Song ◽  
A. S. Evans ◽  
E. J. Murphy ◽  
L. Armus ◽  
...  
Keyword(s):  
Large Array ◽  
Infrared Galaxies ◽  
Very Large Array ◽  
Star Forming ◽  
Luminous Infrared Galaxies ◽  
Star Forming Regions

scholarly journals UCHII regions in the Antennae

2006 ◽  
Vol 2 (S237) ◽  
pp. 476-476
Author(s):  
L. Snijders ◽  
L. J. Kewley ◽  
P. P. van der Werf ◽  
B. R. Brandl
Keyword(s):  
Emission Line ◽  
Spatial Resolution ◽  
Average Density ◽  
Physical Characteristics ◽  
Stellar Clusters ◽  
Mid Infrared ◽  
Infrared Observations ◽  
Star Forming ◽  
Compact Material ◽  
Star Forming Regions

AbstractWe explore the physical characteristics of young stellar clusters in the Antennae by combining recent ground- and space-based mid-infrared observations with a newly developed set of diagnostic diagrams. Spitzer data give an overview of the star-forming regions extending over hundreds of parsecs, showing a dominant diffuse ISM component with a density of 102 cm−3 plus a small fraction of very compact material (106 cm−3). With its higher spatial resolution VISIR gives a close-up view of the latter component. Its emission line ratios suggest that these regions are fundamentally different from local star-forming regions. Instead of having small isolated UCHII regions, as in local star-forming regions, the average density of the medium of the whole region falls in the (ultra)compact regime, exceeding 104 cm−3 over tens of parsecs.

Mid-infrared spectroscopic study of crystallization of cubic spinel phase from metakaolin

2011 ◽  
Vol 184 (10) ◽  
pp. 2661-2667 ◽  
Author(s):  
Petr Ptáček ◽  
František Šoukal ◽  
Tomáš Opravil ◽  
Magdaléna Nosková ◽  
Jaromír Havlica ◽  
...  
Keyword(s):  
Spectroscopic Study ◽  
Spinel Phase ◽  
Infrared Spectroscopic Study ◽  
Mid Infrared ◽  
Infrared Spectroscopic

scholarly journals The Nature of the Energy Source in LINERs

1997 ◽  
Vol 159 ◽  
pp. 477-484
Author(s):  
L. Colina ◽  
A. Koratkar
Keyword(s):  
Minor Role ◽  
Host Galaxies ◽  
Infrared Galaxies ◽  
Star Forming ◽  
Luminous Infrared Galaxies ◽  
Star Forming Regions ◽  
Resolution Imaging ◽  
Imaging And Spectroscopy ◽  
A Minor ◽  
High Spatial Resolution Imaging

AbstractLINERs are found in ~30% of all bright galaxies, including luminous infrared galaxies. They form a heterogeneous class powered by a variety of ionizing mechanisms such as low-luminosity AGNs, starbursts, shocks, or any combination of these.In early-type spirals, LINERs are powered by a low-luminosity AGN, or by an AGN surrounded by circumnuclear star-forming regions. In luminous infrared galaxies, LINERs are powered by starbursts with associated wind-related extended shocks, and an AGN may play a minor role, if any. LINERs in some FR I radio galaxies show a strong evidence for the presence of a massive central black hole, and there are indications for the existence of shocks in the nuclear disks of these galaxies. Yet, the dominant ionizing mechanism for LINERs in radio-quiet ellipticals and FR I host galaxies is still unclear.Multifrequency high spatial resolution imaging and spectroscopy are essential to discriminate among the different ionizing mechanisms present in LINERs.

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