High-resolution spectra of distant compact narrow emission line galaxies: Progrenitors of spheroidal galaxies

1995 ◽  
Vol 440 ◽  
pp. L49 ◽  
Author(s):  
David C. Koo ◽  
Rafael Guzman ◽  
S. M. Faber ◽  
Garth D. Illingworth ◽  
Matthew A. Bershady ◽  
...  
Keyword(s):  
High Resolution ◽  
Emission Line ◽  
Emission Line Galaxies ◽  
Narrow Emission ◽  
Spheroidal Galaxies

scholarly journals Double-peaked narrow emission-line galaxies in LAMOST survey

2018 ◽  
Vol 482 (2) ◽  
pp. 1889-1899 ◽  
Author(s):  
M-X Wang ◽  
A-L Luo ◽  
Y-H Song ◽  
S-Y Shen ◽  
S Feng ◽  
...  
Keyword(s):  
Emission Line ◽  
Emission Line Galaxies ◽  
Narrow Emission

scholarly journals AGN populations in compact groups of galaxies

2013 ◽  
Vol 9 (S304) ◽  
pp. 337-338
Author(s):  
A. S. Amirkhanian ◽  
A. del Olmo ◽  
A. G. Egikian ◽  
H. Tiersch ◽  
D. Stoll ◽  
...  
Keyword(s):  
Emission Line ◽  
Observational Studies ◽  
Compact Groups ◽  
Broad Line ◽  
Local Universe ◽  
Host Group ◽  
Groups Of Galaxies ◽  
Emission Line Galaxies ◽  
Early Type Galaxy ◽  
Narrow Emission

AbstractCompact groups of galaxies (CGG) have revealed some interesting problems from their origin and lifetime to the evolution of their members in such dense configurations. Some authors suppose that CGG probably are the best location for AGNs in the local Universe. According to our preliminary data about 7–10% of member galaxies in Shahbazian compact groups (SHCGs) are emission-line galaxies including the broad-line AGN and the narrow emission-line galaxies. Shahbazian 355/4 is a classical Seyfert 1 galaxy at the same redshift as host group. Moreover Shahbazian 278/4 is also a broad-line AGN in an early-type galaxy. This is the first emission-line object in SHCGs. Meanwhile there is no Seyfert 1 galaxy among the spectroscopically investigated galaxies in the South compact groups, although more than 70% of the member galaxies in these groups probably have an active nucleus. The UZC- compact groups have an excess of Seyfert 2s (but not Seyfert 1s!). Further observational studies are necessary to understand such and many other questions related to the puzzle of CGG.

scholarly journals Narrow-emission-line galaxies and the origin of the unresolved X-ray background

1997 ◽  
Vol 288 (2) ◽  
pp. 273-285 ◽  
Author(s):  
C. P. Pearson ◽  
M. Rowan-Robinson ◽  
I. M. McHardy ◽  
L. R. Jones ◽  
K. O. Mason
Keyword(s):  
Emission Line ◽  
X Ray ◽  
Emission Line Galaxies ◽  
X Ray Background ◽  
Narrow Emission

scholarly journals Plasma diagnostics of emission-line galaxies in SDSS

2012 ◽  
Vol 8 (S295) ◽  
pp. 339-339
Author(s):  
Zhitai Zhang ◽  
Yanchun Liang ◽  
François Hammer
Keyword(s):  
Emission Line ◽  
Electron Temperature ◽  
Plasma Diagnostics ◽  
Star Forming ◽  
Central Regions ◽  
Emission Line Galaxies ◽  
Narrow Emission

AbstractWe analyse a sample of 15,019 narrow emission-line galaxies, i.e. Seyferts, LINERs, composites and star-forming galaxies, from SDSS DR7 to study the differences between the different emission-line classes. We report two clear sequences of electron temperature (Te) and density (ne): Te-LINER ≳ Te-composite > Te-Seyfert > Te-star-forming and ne-Seyfert ≳ ne-LINER > ne-composite > ne-star-forming. General transitions of ne and Te from central regions to disks are quantitatively confirmed.

scholarly journals A Search for Low Surface Brightness Structure around Compact Narrow Emission Line Galaxies

2006 ◽  
Vol 649 (1) ◽  
pp. 129-149 ◽  
Author(s):  
Elizabeth J. Barton ◽  
Liese van Zee ◽  
Matthew A. Bershady
Keyword(s):  
Emission Line ◽  
Surface Brightness ◽  
Low Surface Brightness ◽  
Emission Line Galaxies ◽  
Narrow Emission

scholarly journals Plasma diagnostics of emission-line galaxies in SDSS

2013 ◽  
Vol 9 (S298) ◽  
pp. 455-455
Author(s):  
Zhitai Zhang ◽  
Yanchun Liang ◽  
François Hammer
Keyword(s):  
Emission Line ◽  
Electron Temperature ◽  
Plasma Diagnostics ◽  
Star Forming ◽  
Central Regions ◽  
Emission Line Galaxies ◽  
Narrow Emission

AbstractSample contains 15 019 narrow emission-line galaxies, i.e. Seyferts, LINERs, composites and star-forming galaxies, from SDSS DR7 for systematically studying differences between different classes. We report two clear sequences of electron temperature (Te) and density (ne): Te-LINER ≳ Te-composite > Te-Seyfert > Te-star-forming and ne-Seyfert ≳ ne-LINER > ne-composite > ne-star-forming. General transitions of ne and Te from central regions to disks are quantitatively confirmed.

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