scholarly journals Orientation of galactic bulge planetary nebulae toward the Galactic center

2014 ◽  
Vol 10 (S312) ◽  
pp. 128-130
Author(s):  
Ashkbiz Danehkar ◽  
Quentin A. Parker
Keyword(s):  
Emission Line ◽  
Galactic Center ◽  
Planetary Nebulae ◽  
Wide Field ◽  
Spatially Resolved ◽  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
National University ◽  
Hα Emission ◽  
Integral Field

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.

scholarly journals Imaging FTS: A Different Approach to Integral Field Spectroscopy

2014 ◽  
Vol 2014 ◽  
pp. 1-15 ◽  
Author(s):  
Laurent Drissen ◽  
Laurie Rousseau-Nepton ◽  
Sébastien Lavoie ◽  
Carmelle Robert ◽  
Thomas Martin ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Emission Line ◽  
Absorption Line ◽  
Spiral Galaxy ◽  
Hyperspectral Imagery ◽  
Fourier Transform Spectroscopy ◽  
Wide Field ◽  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
Integral Field

Imaging Fourier transform spectroscopy (iFTS) is a promising, although technically very challenging, option for wide-field hyperspectral imagery. We present in this paper an introduction to the iFTS concept and its advantages and drawbacks, as well as examples of data obtained with a prototype iFTS, SpIOMM, attached to the 1.6 m telescope of the Observatoire du Mont-Mégantic: emission line ratios in the spiral galaxy NGC 628 and absorption line indices in the giant elliptical M87. We conclude by introducing SpIOMM's successor, SITELLE, which will be installed at the Canada-France-Hawaii Telescope in 2014.

scholarly journals Emission-Line Diagnostics for Galaxies

2015 ◽  
Vol 11 (A29B) ◽  
pp. 264-264
Author(s):  
Lisa J. Kewley
Keyword(s):  
Star Formation ◽  
Emission Line ◽  
Power Sources ◽  
Star Forming ◽  
Spatially Resolved ◽  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
Yield Information ◽  
Ir Diagnostics ◽  
Integral Field

AbstractI will give an overview of the emission-line diagnostics used for star-forming galaxies. I will review the UV, optical, and IR diagnostics that can be used to yield information about the ISM conditions, star-formation properties, and power sources in GRB hosts, both globally, and with spatially-resolved data. I will discuss wide integral field spectroscopy and AO-led integral field spectroscopy on current and future telescopes, focusing on the insights to be gained on the properties of GRB sites.

scholarly journals The stellar structure of early-type galaxies: a wide-field Mitchell Spectrograph view

2016 ◽  
Vol 11 (S321) ◽  
pp. 288-288
Author(s):  
N. F. Boardman ◽  
A. Weijmans ◽  
R. C. E. van den Bosch ◽  
L. Zhu ◽  
A. Yildirim ◽  
...  
Keyword(s):  
Effective Radius ◽  
Stellar Structure ◽  
Wide Field ◽  
Early Type ◽  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
Integral Field ◽  
Made In

Much progress has been made in recent years towards understanding how early-type galaxies (ETGs) form and evolve. SAURON (Bacon et al. 2001) integral-field spectroscopy from the ATLAS3D survey (Cappellari et al. 2011) has suggested that less massive ETGs are linked directly to spirals, whereas the most massive objects appear to form from a series of merging and accretion events (Cappellari et al. 2013). However, the ATLAS3D data typically only extends to about one half-light radius (or effective radius, Re), making it unclear if this picture is truly complete.

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 ◽  
...  
Keyword(s):  
Ionized Gas ◽  
Spatially Resolved ◽  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
Integral Field

scholarly journals FROM GLOBAL TO SPATIALLY RESOLVED IN LOW-REDSHIFT GALAXIES

2021 ◽  
Vol 57 (1) ◽  
Author(s):  
S. F. Sánchez ◽  
C. J. Walcher ◽  
C. Lopez-Cobá ◽  
J. K. Barrera-Ballesteros ◽  
A. Mejía-Narváez ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Galaxy Evolution ◽  
Ionized Gas ◽  
Evolution Of Galaxies ◽  
Spatially Resolved ◽  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
Stellar Properties ◽  
Integral Field ◽  
Redshift Galaxies

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.

scholarly journals Analysis of Multiple Shell Planetary Nebulae Based on HST/WFPC2 Extended 2D Diagnostic Diagrams

Galaxies ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 84 ◽  
Author(s):  
Daniela Barría ◽  
Stefan Kimeswenger
Keyword(s):  
Ionizing Radiation ◽  
Electron Temperature ◽  
Thermodynamic Parameters ◽  
Narrow Band ◽  
Hubble Space Telescope ◽  
Planetary Nebulae ◽  
Wide Field ◽  
Spatially Resolved ◽  
Gaseous Nebulae ◽  
Hα Emission

The investigation of gaseous nebulae, emitting in forbidden lines, is often based extensively on diagnostic diagrams. The special physics of these lines often allows for disentangling with a few line ratios normally coupled thermodynamic parameters like electron temperature, density and properties of the photo-ionizing radiation field. Diagnostic diagrams are usually used for the investigation of planetary nebulae as a total. We investigated the extension of such integrated properties towards spatially resolved 2D diagnostics, using Hubble Space Telescope/Wide Field Planetary Camera 2 (HST/WFPC2) narrow band images. For this purpose, we also derived a method to isolate pure Hα emission from the [N ii] contamination as normally suffering in the F656N HST/WFPC2 filter.

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