Infrared spectroscopy of star formation in interacting galaxies

1986 ◽  
Vol 309 ◽  
pp. 70 ◽  
Author(s):  
Sara C. Beck ◽  
Jean L. Turner ◽  
Paul T. P. Ho
Keyword(s):  
Infrared Spectroscopy ◽  
Star Formation ◽  
Interacting Galaxies

scholarly journals Recent star formation in interacting galaxies - III. Evidence from mid-infrared photometry

1988 ◽  
Vol 233 (1) ◽  
pp. 1-23 ◽  
Author(s):  
G. S. Wright ◽  
R. D. Joseph ◽  
N. A. Robertson ◽  
P. A. James ◽  
W. P. S. Meikle
Keyword(s):  
Star Formation ◽  
Interacting Galaxies ◽  
Infrared Photometry ◽  
Mid Infrared

Induced star formation and the colors of double and interacting galaxies

Astrophysics ◽  
1981 ◽  
Vol 16 (3) ◽  
pp. 255-262
Author(s):  
M. A. Smirnov ◽  
B. V. Komberg
Keyword(s):  
Star Formation ◽  
Interacting Galaxies

Gas dynamics and star formation in “isolated” and interacting galaxies using FP observations

2019 ◽  
Vol 14 (S353) ◽  
pp. 264-265
Author(s):  
Isaura Fuentes-Carrera ◽  
Nelli Cárdenas-Martínez ◽  
Martín Nava-Callejas ◽  
Margarita Rosado
Keyword(s):  
Star Formation ◽  
Gas Dynamics ◽  
Equal Mass ◽  
Interacting Galaxies ◽  
Ionized Gas ◽  
Star Forming ◽  
Gas Kinematics ◽  
Fabry Perot ◽  
Different Types

AbstractWe present scanning Fabry-Perot observations of different types of star-forming galaxies from apparently isolated LIRGs to equal mass interacting galaxies. We analyze the ionized gas kinematics, its relation with the morphology of each system and the location of SF regions for different systems.

Kinematic asymmetry of galaxy pairs

2019 ◽  
Vol 14 (S353) ◽  
pp. 262-263
Author(s):  
Shuai Feng ◽  
Shi-Yin Shen ◽  
Fang-Ting Yuan
Keyword(s):  
Star Formation ◽  
Velocity Field ◽  
Star Formation Rate ◽  
Formation Rate ◽  
Control Sample ◽  
Interacting Galaxies ◽  
Ionized Gas ◽  
Galaxy Interaction ◽  
The Galaxy

AbstractThe interaction between galaxies is believed to be the main origin of the peculiarities of galaxies. It can disturb not only the morphology but also the kinematics of galaxies. These disturbed and asymmetric features are the indicators of galaxy interaction. We study the velocity field of ionized gas in galaxy pairs based on MaNGA survey. Using the kinemetry package, we fit the velocity field and quantify the degree of kinematic asymmetry. We find that the fraction of high kinematic asymmetry is much higher for galaxy pairs with dp⩽30h−1kpc. Moreover, compared to a control sample of single galaxies, we find that the star formation rate is enhanced in paired galaxies with high kinematic asymmetry. For paired galaxies with low kinematic asymmetry, no significant SFR enhancement has been found. The galaxy pairs with high kinematic asymmetry are more likely to be real interacting galaxies rather than projected pairs.

Star formation in a sample of interacting galaxies

1989 ◽  
Vol 345 ◽  
pp. 176 ◽  
Author(s):  
E. Laurikainen ◽  
M. Moles
Keyword(s):  
Star Formation ◽  
Interacting Galaxies

scholarly journals Multiwavelength investigation of extended green object G19.88-0.53: revealing a protocluster

2020 ◽  
Vol 497 (4) ◽  
pp. 5454-5472
Author(s):  
Namitha Issac ◽  
Anandmayee Tej ◽  
Tie Liu ◽  
Watson Varricatt ◽  
Sarita Vig ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Star Formation ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
High Mass ◽  
Mass Star ◽  
Star Forming ◽  
Gas Kinematics ◽  
Evolutionary Spectrum ◽  
Multiple Shock

ABSTRACT A multiwavelength analysis of star formation associated with the extended green object, G19.88-0.53 is presented in this paper. With multiple detected radio and millimetre components, G19.88-0.53 unveils as harbouring a protocluster rather than a single massive young stellar object. We detect an ionized thermal jet using the upgraded Giant Meterwave Radio Telescope, India, which is found to be associated with a massive, dense and hot ALMA 2.7 mm core driving a bipolar CO outflow. Near-infrared spectroscopy with UKIRT–UIST shows the presence of multiple shock-excited H2 lines concurrent with the nature of this region. Detailed investigation of the gas kinematics using ALMA data reveals G19.88-0.53 as an active protocluster with high-mass star-forming components spanning a wide evolutionary spectrum from hot cores in accretion phase to cores driving multiple outflows to possible UCH ii regions.

scholarly journals Star Formation Bursts in Galaxies

1986 ◽  
Vol 7 ◽  
pp. 557-562
Author(s):  
J. Lequeux
Keyword(s):  
Star Formation ◽  
Hii Regions ◽  
Interacting Galaxies ◽  
Irregular Galaxies ◽  
Star Formation In Galaxies ◽  
Compact Galaxies

AbstractWe review the tracers of star formation in galaxies and show how they demonstrate the presence of bursts of star formation in various astrophysical contexts: large extragalactic HII regions in spiral and irregular galaxies and in blue compact galaxies, nuclei of some galaxies, extended star formation in other galaxies. We show that strong bursts seem to occur mainly in interacting galaxies. A few comments are made about the theory of such phenomena.

scholarly journals Starbursts Triggered by Cloud Compression in Interacting Galaxies

1999 ◽  
Vol 186 ◽  
pp. 235-242
Author(s):  
Chanda J. Jog
Keyword(s):  
High Pressure ◽  
Star Formation ◽  
Shock Compression ◽  
Physical Mechanism ◽  
Hydrogen Gas ◽  
Interacting Galaxies ◽  
Giant Molecular Clouds ◽  
Main Mode ◽  
Radiative Shock ◽  
Intercloud Medium

We propose a physical mechanism for the triggering of starbursts in interacting spiral galaxies by shock compression of the pre-existing disk giant molecular clouds (GMCs). We show that as a disk GMC tumbles into the central region of a galaxy following a galactic tidal encounter, it undergoes a radiative shock compression by the pre-existing high pressure of the central molecular intercloud medium. The shocked outer shell of a GMC becomes gravitationally unstable, which results in a burst of star formation in the initially stable GMC. In the case of colliding galaxies with physical overlap such as Arp 244, the cloud compression is shown to occur due to the hot, high-pressure remnant gas resulting from the collisions of atomic hydrogen gas clouds from the two galaxies. The resulting values of infrared luminosity agree with observations. The main mode of triggered star formation is via clusters of stars, thus we can naturally explain the formation of young, luminous star clusters observed in starburst galaxies.

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