scholarly journals Spatially resolved integral field spectroscopy of the ionized gas in IZw18

2016 ◽  
Vol 459 (3) ◽  
pp. 2992-3004 ◽  
Author(s):  
C. Kehrig ◽  
J. M. Vílchez ◽  
E. Pérez-Montero ◽  
J. Iglesias-Páramo ◽  
J. D. Hernández-Fernández ◽  
...  
Author(s):  
S. F. Sánchez ◽  
C. J. Walcher ◽  
C. Lopez-Cobá ◽  
J. K. Barrera-Ballesteros ◽  
A. Mejía-Narváez ◽  
...  

Our understanding of the structure, composition and evolution of galaxies hasstrongly improved in the last decades, mostly due to new results based on large spectro-scopic and imaging surveys. In particular, the nature of ionized gas, its ionization mech-anisms, its relation with the stellar properties and chemical composition, the existence ofscaling relations that describe the cycle between stars and gas, and the corresponding evo-lution patterns have been widely explored and described. More recently, the introduction ofadditional techniques, in particular integral field spectroscopy, and their use in large galaxysurveys, have forced us to re-interpret most of those recent results from a spatially resolvedperspective. This review is aimed to complement recent efforts to compile and summarizethis change of paradigm in the interpretation of galaxy evolution. To this end we replicatepublished results, and present novel ones, based on the largest compilation of IFS data ofgalaxies in the nearby universe to date.


2004 ◽  
Vol 602 (1) ◽  
pp. 181-189 ◽  
Author(s):  
Luis Colina ◽  
Santiago Arribas ◽  
David Clements

1995 ◽  
Vol 149 ◽  
pp. 254-256
Author(s):  
F. Durret ◽  
E. Pécontal ◽  
P. Petitjean ◽  
J. Bergeron

Three quasars, Ton 616, 4C 37.43 and PKS 2251+113 (Stockton and MacKenty 1987) were observed in 1992 at the 3.6 m CFH telescope with the Integral Field Spectrograph TIGER (Courtès et al. 1987, Pécontal 1991) under subarcsecond seeing (0.5 - 0.7”). The spatial sampling was 0.39” in a field 7 by 7 ”, and the spectral resolution 8 ÅFWHM in the Hβ - [OIII]λ 5007 wavelength region (in the rest frame of the objects). The scaling is 4.5, 5.9 and 5.3 kpc.arcsec−1 for Ton 616, 4C 37.43 and PKS 2251+113 respectively (H0 = 75 km.s−1.Mpc−1). The data were reduced with the software developed at Observatoire de Lyon by Rousset, Bacon and Pécontal (Rousset 1992). A detailed account of our results is reported in Durret et al. 1994.


2009 ◽  
Vol 5 (S267) ◽  
pp. 290-298 ◽  
Author(s):  
Thaisa Storchi-Bergmann

AbstractI report recent results on the kinematics of the inner few hundred parsecs (pc) around nearby active galactic nuclei (AGN) at a sampling of a few pc to a few tens of pc, using optical and near-infrared (near-IR) integral field spectroscopy obtained with the Gemini telescopes. The stellar kinematics of the hosts — comprised mostly of spiral galaxies — are dominated by circular rotation in the plane of the galaxy. Inflows with velocities of ~50 km s−1 have been observed along nuclear spiral arms in (optical) ionized gas emission for low-luminosity AGN and in (near-IR) molecular gas emission for higher-luminosity AGN. We have also observed gas rotating in the galaxy plane, sometimes in compact (few tens of pc) disks which may be fuelling the AGN. Outflows have been observed mostly in ionized gas emission from the narrow-line region, whose flux distributions and kinematics frequently correlate with radio flux distributions. Channel maps along the emission-line profiles reveal velocities as high as ~ 600 km s−1. Mass outflow rates in ionized gas range from 10−2 to 10−3M⊙ yr−1 and are 10–100 times larger than the mass accretion rates on to the AGN, supporting an origin for the bulk of the outflow in gas from the galaxy plane entrained by a nuclear jet or accretion disk wind.


2014 ◽  
Vol 10 (S312) ◽  
pp. 128-130
Author(s):  
Ashkbiz Danehkar ◽  
Quentin A. Parker

AbstractWe have used the Wide Field Spectrograph on the Australian National University 2.3-m telescope to perform the integral field spectroscopy for a sample of the Galactic planetary nebulae. The spatially resolved velocity distributions of the Hα emission line were used to determine the kinematic features and nebular orientations. Our findings show that some bulge planetary nebulae toward the Galactic center have a particular orientation.


2007 ◽  
Vol 477 (3) ◽  
pp. 813-822 ◽  
Author(s):  
C. Kehrig ◽  
J. M. Vílchez ◽  
S. F. Sánchez ◽  
E. Telles ◽  
E. Pérez-Montero ◽  
...  

2009 ◽  
Vol 704 (1) ◽  
pp. 842-862 ◽  
Author(s):  
Guillermo A. Blanc ◽  
Amanda Heiderman ◽  
Karl Gebhardt ◽  
Neal J. Evans ◽  
Joshua Adams

2012 ◽  
Vol 428 (1) ◽  
pp. 86-102 ◽  
Author(s):  
B. L. James ◽  
Y. G. Tsamis ◽  
M. J. Barlow ◽  
J. R. Walsh ◽  
M. S. Westmoquette

2014 ◽  
Vol 442 (1) ◽  
pp. 495-508 ◽  
Author(s):  
M. Rodríguez-Baras ◽  
F. F. Rosales-Ortega ◽  
A. I. Díaz ◽  
S. F. Sánchez ◽  
A. Pasquali

2013 ◽  
Vol 9 (S304) ◽  
pp. 252-252
Author(s):  
Richard Davies

AbstractIntegral field spectroscopy provides us with immensely rich datasets about spatially resolved distributions and kinematics of emission and absorption lines. In this contribution I will describe some of the key insights that have been made about AGN using optical, near infrared, and far infrared IFUs. These encompass gas inflow and outflow mechanisms, and the relations between star formation, the torus, and accretion onto the black hole. Progress so far has largely relied on archetypal and small sets of objects. In the future, a more statistically robust approach will be required. I will end by discussing a number of issues that can easily confuse an emerging picture, and need to be borne in mind for such surveys.


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