2002A&A...383...46M

Query : 2002A&A...383...46M

2002A&A...383...46M - Astronomy and Astrophysics, volume 383, 46-55 (2002/2-3)

The balance between shocks and AGN photoionization in radio sources and its relation to the radio size.

MOY E. and ROCCA-VOLMERANGE B.

Abstract (from CDS):

We have analyzed the ultraviolet and optical emission line ratios of a large sample of extragalactic radio sources (QSOs and radio galaxies), with the help of models combining AGN photoionization and shocks. The results strongly suggest that the two ionizing mechanisms frequently coexist. The model sequences obtained by varying the balance between shocks and AGN photoionization account for most emission line data in the 12 line ratio diagrams we have considered. In the frequently used diagrams involving [OIII]λ5007/Hβ, [OI]λ6300/Hα, [NII]λ6584/Hα and [SII]λλ6716, 6731 (Veilleux & Osterbrock, 1987ApJS...63..295V), the effect of varying the shock-photoionization balance mimics a variation of the ionization parameter (U) in traditional photoionization sequences. In most of the remaining diagrams, such as [OI]λ6300/[OIII]λ5007 vs. [OIII]λ4363/[OIII]λ5007, [OIII]λ5007/Hβ vs. [OIII]λ4363/[OIII]λ5007 and CIII]λ1909/[CII]λ2326 vs. CIVλ1549/[CII]λ2326, the data can only be accounted for if both photoionization and shocks contribute to the line fluxes. The coexistence of shocks and AGN photoionization also provides an explanation for the most extreme objects in the NVλ1240/HeIIλ1640 vs. NVλ1240/CIVλ1549 diagram without requiring largely super-solar metallicities. In addition, we show that there is a relationship between the [OII]λ3727/[OIII]λ5007 ratio (i.e., the ionization level of the gas) and the radio size in radio galaxies. This strongly supports the hypothesis that the most compact (≤2kpc) and the largest (≥150kpc) sources are dominated by photoionization, while intermediate-sized radio galaxies are dominated by shocks. We briefly discuss the possible origin of the relation between the shock-ionization balance and the radio size.

Abstract Copyright: ∼

Journal keyword(s): line: formation - galaxies: active - galaxies: evolution - galaxies: ISM - quasars: emission lines

Simbad objects: 1

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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 - 2024 		#notes
1 [VV96] J102434.5+470911 Sy1 10 24 34.5 +47 09 11     20.5     ~ 485 0

Query : 2002A&A...383...46M

Basic data :
[VV96] J102434.5+470911 -- Seyfert 1 Galaxy
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types: 		Sy1 (), QSO ([VV96],[VV2000],...), LeQ (2010A&A), IR (IRAS)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) : 		10 24 34.5 +47 09 11 (Optical) [ ] D 2010A&A...518A..10V
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) : 		10 21 31.1 +47 24 25 [ ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) : 		168.1168 +55.0322 [ ]
Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode"
  • value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options
    (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity)
  • [error] : error of the corresponding value displayed before
  • (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown)
  • quality : flag of quality ( A=best quality -> E=worst quality, ∼=unknown quality)
  • bibcode : bibcode of the value's origin
Radial velocity / Redshift / cz : 		V(km/s) 248971 [~] / z(~) 2.286 [~] / cz 685326 [~]
   D 2001AJ....121.2843B
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
  • (System) : may be AB (default is Vega)
  • flux-value : value of flux or magnitude
  • [error] : error value
  • quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality)
  • MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
  • bibcode : bibcode of the flux reference
Fluxes (4) :
V 20.5 [~] E ~
J 18.65 [0.15] D 2003yCat.2246....0C
H 17.15 [0.10] D 2003yCat.2246....0C
K 16.37 [0.10] D 2003yCat.2246....0C
SIMBAD within arcmin
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad points in this preview
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within arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR.
The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding.
Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!). sed-help-icon

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (9) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

[VV96] J102434.5+470911 [EME94] Comp 1 [VV2006] J102434.5+470911
IRAS F10214+4724 [VV2000] J102434.5+470911 [VV2010] J102434.5+470911
[EAH96] Component 2 [VV2003] J102434.5+470911 [VV98] J102434.5+470911

References (485 between 1850 and 2024) (Total 485)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements


velocities : 2   

   

Observing logs


herschel : 5    ISO : 6    XMM : 1   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : [VV96] J102434.5+470911

Link by name to the catalogue in VizieR :

IRAS F10214+4724

Search by coordinates in Vizier (radius: 5 arcsec)

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