2014ApJ...795...62K

Query : 2014ApJ...795...62K

2014ApJ...795...62K - Astrophys. J., 795, 62 (2014/November-1)

Changing ionization conditions in SDSS galaxies with active galactic nuclei as a function of environment from pairs to clusters.

KHABIBOULLINE E.T., STEINHARDT C.L., SILVERMAN J.D., ELLISON S.L., MENDEL J.T. and PATTON D.R.

Abstract (from CDS):

We study how active galactic nucleus (AGN) activity changes across environments from galaxy pairs to clusters using 143,843 galaxies with z < 0.2 from the Sloan Digital Sky Survey. Using a refined technique, we apply a continuous measure of AGN activity, characteristic of the ionization state of the narrow-line emitting gas. Changes in key emission-line ratios ([N II] λ6548/Hα, [O III] λ5007/Hβ) between different samples allow us to disentangle different environmental effects while removing contamination. We confirm that galaxy interactions enhance AGN activity. However, conditions in the central regions of clusters are inhospitable for AGN activity even if galaxies are in pairs. These results can be explained through models of gas dynamics in which pair interactions stimulate the transfer of gas to the nucleus and clusters suppress gas availability for accretion onto the central black hole.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - galaxies: clusters: general - galaxies: interactions - galaxies: nuclei

Simbad objects: 1

goto Full paper

goto View the references in ADS

Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME ACO 901-902 Supercluster SCG 09 56 -10.0           ~ 127 1

Query : 2014ApJ...795...62K

Basic data :
NAME ACO 901-902 Supercluster -- Supercluster of Galaxies
Other object types: otypes_help 		SCG (), ClG (RXC)
ICRS coord. (ep=J2000) : 		09 56 00.0 -10 00 00 [ ] E ~
FK4 coord. (ep=B1950 eq=1950) : 		09 53 32.3 -09 45 44 [ ]
Gal coord. (ep=J2000) : 		247.9621 +33.5585 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 44171 [~] / z(~) 0.16 [~] / cz 47967 [~]
   D 2002ApJ...568..141G
SIMBAD within arcmin
Overlay Simbad points in this preview
Back
All CDSPortal (CDSPortal)
Send to sendBySAMP sendBySAMP
sedIcon
within arcsec sed-help-icon
notes:

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 9 		Display criteria :

Identifiers (2) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NAME ACO 901-902 Supercluster RXC J0956.5-1004

References (127 between 1850 and 2026) (Total 127)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)

External archives :

Data at NED - NASA/IPAC Extragalactic Database : NAME ACO 901-902 Supercluster

Link by name to the catalogue in VizieR :

RXC J0956.5-1004

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

The annotation server is currently not available. Sorry for any inconvenience

To bookmark this query, right click on this link: simbad:objects in 2014ApJ...795...62K and select 'bookmark this link' or equivalent in the popup menu