scholarly journals EVOLVING STARBURST MODELING OF FAR-INFRARED/SUBMILLIMETER/MILLIMETER LINE EMISSION. III. APPLICATION TO NEARBY LUMINOUS INFRARED GALAXIES

2010 ◽  
Vol 716 (1) ◽  
pp. 341-347
Author(s):  
Lihong Yao
Keyword(s):  
Line Emission ◽  
Far Infrared ◽  
Infrared Galaxies ◽  
Luminous Infrared Galaxies

scholarly journals AHerschel/PACS Far-infrared Line Emission Survey of Local Luminous Infrared Galaxies

2017 ◽  
Vol 846 (1) ◽  
pp. 32 ◽  
Author(s):  
T. Díaz-Santos ◽  
L. Armus ◽  
V. Charmandaris ◽  
N. Lu ◽  
S. Stierwalt ◽  
...  
Keyword(s):  
Line Emission ◽  
Far Infrared ◽  
Infrared Galaxies ◽  
Luminous Infrared Galaxies

scholarly journals Hidden or missing outflows in highly obscured galaxy nuclei?

2019 ◽  
Vol 623 ◽  
pp. A29 ◽  
Author(s):  
N. Falstad ◽  
F. Hallqvist ◽  
S. Aalto ◽  
S. König ◽  
S. Muller ◽  
...  
Keyword(s):  
Line Emission ◽  
Far Infrared ◽  
Spectral Lines ◽  
Absorption Lines ◽  
Wide Angle ◽  
Vibrationally Excited ◽  
Molecular Outflows ◽  
Luminous Infrared Galaxies ◽  
The Galaxy ◽  
Central Regions

Context. Understanding the nuclear growth and feedback processes in galaxies requires investigating their often obscured central regions. One way to do this is to use (sub)millimeter line emission from vibrationally excited HCN (HCN-vib), which is thought to trace warm and highly enshrouded galaxy nuclei. It has been suggested that the most intense HCN-vib emission from a galaxy is connected to a phase of nuclear growth that occurs before the nuclear feedback processes have been fully developed. Aims. We aim to investigate if there is a connection between the presence of strong HCN-vib emission and the development of feedback in (ultra)luminous infrared galaxies ((U)LIRGs). Methods. We collected literature and archival data to compare the luminosities of rotational lines of HCN-vib, normalized to the total infrared luminosity, to the median velocities of 119 μm OH absorption lines, potentially indicating outflows, in a total of 17 (U)LIRGs. Results. The most HCN-vib luminous systems all lack signatures of significant molecular outflows in the far-infrared OH absorption lines. However, at least some of the systems with bright HCN-vib emission have fast and collimated outflows that can be seen in spectral lines at longer wavelengths, including in millimeter emission lines of CO and HCN (in its vibrational ground state) and in radio absorption lines of OH. Conclusions. We conclude that the galaxy nuclei with the highest LHCN − vib/LIR do not drive wide-angle outflows that are detectable using the median velocities of far-infrared OH absorption lines. This is possibly because of an orientation effect in which sources oriented in such a way that their outflows are not along our line of sight also radiate a smaller proportion of their infrared luminosity in our direction. It could also be that massive wide-angle outflows destroy the deeply embedded regions responsible for bright HCN-vib emission, so that the two phenomena cannot coexist. This would strengthen the idea that vibrationally excited HCN traces a heavily obscured stage of evolution before nuclear feedback mechanisms are fully developed.

scholarly journals HERSCHEL OBSERVATIONS OF FAR-INFRARED COOLING LINES IN INTERMEDIATE REDSHIFT (ULTRA)-LUMINOUS INFRARED GALAXIES

2014 ◽  
Vol 781 (1) ◽  
pp. L15 ◽  
Author(s):  
D. Rigopoulou ◽  
R. Hopwood ◽  
G. E. Magdis ◽  
N. Thatte ◽  
B. M. Swinyard ◽  
...  
Keyword(s):  
Far Infrared ◽  
Infrared Galaxies ◽  
Luminous Infrared Galaxies ◽  
Intermediate Redshift

scholarly journals A Herschel Survey of the [N ii] 205 μm Emission in Local Infrared Luminous Galaxies

2012 ◽  
Vol 8 (S292) ◽  
pp. 256-256
Author(s):  
Yinghe Zhao ◽  
Nanyao Lu ◽  
C. Kevin Xu ◽  
Yu Gao ◽  
Keyword(s):  
Statistical Study ◽  
Star Formation Rate ◽  
Formation Rate ◽  
Line Emission ◽  
Infrared Galaxies ◽  
Star Forming ◽  
Luminous Infrared Galaxies ◽  
High Ionization ◽  
Luminous Galaxies ◽  
Ionization Parameter

AbstractThe [N ii] line is a major coolant in ionized interstellar medium, and is expected to be a good star formation rate indicator. Here we present a statistical study of [N ii] line emission for a large sample of local luminous infrared galaxies (LIRGs) using Herschel SPIRE FTS data (Lu et al. 2012; Zhao et al. 2012, in preparation). For our sample of galaxies, the [N ii] to the total infrared luminosity ratio (L[Nii]/LIR) varies from ∼ 10−5 to ∼ 10−4. We investigate the correlation between L[Nii] and LIR, as well as the dependence of L[Nii]/LIR on LIR, infrared colors (f60/f100) and the OIII 88 μm to [N ii] luminosity ratio. We find that L[Nii] strongly, and almost linearly correlates with LIR for star-forming galaxies, namely log LIR = (4.23 ± 0.33) + (0.99 ± 0.05) log L[NII] (see Fig. 1). The scatter in this relation is mainly due to the variation of hardness, and/or high ionization parameter, of the background UV field.

Hidden Star Formation: The Ultraviolet Perspective

2002 ◽  
Vol 12 ◽  
pp. 489-492 ◽  
Author(s):  
G.R. Meurer ◽  
T.M. Heckman ◽  
M. Seibert ◽  
J. Goldader ◽  
D. Calzetti ◽  
...  
Keyword(s):  
Star Formation ◽  
High Redshift ◽  
Formation Rate ◽  
Flux Ratio ◽  
Far Infrared ◽  
Infrared Galaxies ◽  
Luminous Infrared Galaxies ◽  
Lyman Break Galaxies ◽  
Highly Sensitive ◽  
Dust Absorption

AbstractMany recent estimates of the star formation rate density at high redshift rely on rest-frame ultraviolet (UV) data. These are highly sensitive to dust absorption. Applying a correlation between the far-infrared (FIR) to UV flux ratio and UV color found in local starbursts to galaxy samples out toz∼ 3, one can account for most of the FIR background. However, the correlation is based on a sample that does not include the most extreme starbursts, Ultra Luminous Infrared Galaxies (ULIGs). Our new UV images of ULIGs show that their FIR fluxes are underpredicted by this correlation by factors ranging from 7 to 70. We discuss how ULIGs compare to the various types of high-zgalaxies: sub-mm sources, Lyman Break Galaxies, and Extremely Red Objects.

scholarly journals Molecular gas and dust emission in a z = 3.63 strongly lensed starburst merger at sub-kiloparsec scales

2019 ◽  
Vol 15 (S352) ◽  
pp. 297-299
Author(s):  
C. Yang ◽  
R. Gavazzi ◽  
A. Beelen ◽  
P. Cox ◽  
A. Omont ◽  
...  
Keyword(s):  
Dust Emission ◽  
Line Emission ◽  
Rotating Disk ◽  
Molecular Gas ◽  
Lens Model ◽  
Infrared Galaxies ◽  
Gas Reservoir ◽  
Luminous Infrared Galaxies ◽  
Major Merger ◽  
Projected Distance

AbstractWe present 0.″2–0.″4 resolution ALMA images of the submillimeter dust continuum and the CO, H2O, and H2O+ line emission in a z = 3.63 strongly lensed dusty starburst. We construct the lens model for the system with an MCMC technique. While the average magnification for the dust continuum is about 11, the magnification of the line emission varies from 5 to 22 across the source, resolving the source down to sub-kpc scales. The ISM content reveals that it is a pre-coalescence major merger of two ultra-luminous infrared galaxies, both with a large amount of molecular gas reservoir. The approaching galaxy in the south shows no apparent kinematic structure with a half-light radius of 0.4 kpc, while the preceding one resembles a 1.2 kpc rotating disk, separated by a projected distance of 1.3 kpc. The distribution of dust and gas emission suggests a large amount of cold ISM concentrated in the interacting region.

scholarly journals Ultraviolet-to-far infrared properties of Lyman break galaxies and luminous infrared galaxies at z ~ 1

2006 ◽  
Vol 450 (1) ◽  
pp. 69-76 ◽  
Author(s):  
D. Burgarella ◽  
P. G. Pérez-González ◽  
K. D. Tyler ◽  
G. H. Rieke ◽  
V. Buat ◽  
...  
Keyword(s):  
Far Infrared ◽  
Infrared Galaxies ◽  
Luminous Infrared Galaxies ◽  
Lyman Break Galaxies

scholarly journals A FAR-INFRARED SPECTROSCOPIC SURVEY OF INTERMEDIATE REDSHIFT (ULTRA) LUMINOUS INFRARED GALAXIES

2014 ◽  
Vol 796 (1) ◽  
pp. 63 ◽  
Author(s):  
Georgios E. Magdis ◽  
D. Rigopoulou ◽  
R. Hopwood ◽  
J.-S. Huang ◽  
D. Farrah ◽  
...  
Keyword(s):  
Far Infrared ◽  
Infrared Galaxies ◽  
Luminous Infrared Galaxies ◽  
Infrared Spectroscopic ◽  
Intermediate Redshift

scholarly journals Dust in FIR-bright ADF-S galaxies

2014 ◽  
Vol 10 (S309) ◽  
pp. 325-325
Author(s):  
K. Małek ◽  
A. Pollo ◽  
T. T. Takeuchi ◽  
V. Buat ◽  
D. Burgarella ◽  
...  
Keyword(s):  
Far Infrared ◽  
Spectral Energy ◽  
Infrared Galaxies ◽  
Spectral Energy Distributions ◽  
Energy Distributions ◽  
Star Forming ◽  
Luminous Infrared Galaxies

AbstractMultiwavelength Spectral Energy Distributions (SEDs) of far-infrared (FIR) galaxies detected in the AKARI South Ecliptic Poles Survey (ADF-S) allow to trace differences between [Ultra]-Luminous Infrared Galaxies ([U]LIRGS) and other types of star-forming galaxies (SF).

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