CDS

2002A&A...387..804V

Query : 2002A&A...387..804V

2002A&A...387..804V - Astronomy and Astrophysics, volume 387, 804-817 (2002/6-1)

The role of the central stellar cluster in active galactic nuclei. I. Semi-analytical model.

VILKOVISKIJ E.Y. and CZERNY B.

Abstract (from CDS):

The subject of the paper is the role of the massive stellar cluster in the activity phenomenon and in the structure of active galactic nuclei. We introduce a simple model of stellar dynamics in the internal part of the cluster, which allows us to include both the star-disk and the star-star interactions. It is shown that the properties of the distribution of stars in the vicinity of the black hole are determined both by the interaction of the stars with the accretion disk and by the pair gravitational and contact interaction between the stars. We calculate the distribution of stars in the central parts of the cluster and we discuss possible effects of stellar mass-loss due to the star-disk interaction. Finally, we study the implications of the central cluster for active galactic nuclei activity. We model the broad line region assuming that the gaseous wakes, following stars after each disk crossing, play the role of the broad line region clouds, and we calculate the corresponding line profiles. We also analyze the contribution of star-star and star-disk collisions to active galactic nuclei variability.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - galaxies: Seyfert - stellar dynamics - ultraviolet: galaxies - X-rays: galaxies

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 - 2023 		#notes
1 NGC 3227 AGN 10 23 30.5765149296 +19 51 54.282206700   12.61 11.79     ~ 1675 1

Query : 2002A&A...387..804V

Basic data :
NGC 3227 -- Active Galaxy Nucleus
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: 		X (1A,3A,...), G (2015ApJS,APG,...), Rad (2012MNRAS,BWE,...), AGN (2012ApJ,[HB91],...), MIR (AKARI,WISEA,...), IR (IRAS,PSCz,...), Sy1 (2013ApJS), GiP (KPG,[T76]), SyG (2013ApJS), QSO ([WTW94]), GiG ([CHM2007]), AG? (2020MNRAS), V* (AAVSO), IG (VV), * (Gaia), gam (INTREF), NIR (2MASS), Opt (SDSS), var (2021Sci), PoG (2012MNRAS)
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 23 30.5765149296 +19 51 54.282206700 (Optical) [ 0.0724 0.0633 90 ] A 2020yCat.1350....0G
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 20 46.7640971095 +20 07 06.443962606 [ 0.0724 0.0633 90 ]
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) : 		216.9913838675033 +55.4453339306153 [ 0.0724 0.0633 90 ]
Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode"
  • pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr)
  • pm-dec : mu-dec (expressed in the ICRS system in mas/yr)
  • [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg)
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the proper motion reference
Proper motions mas/yr : 		0.160 -0.381 [0.085 0.067 90] A 2020yCat.1350....0G
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) 1126 [~] / z(emission) 0.003763 [~] / cz 1128.12 [~]
   (Rad) D 2018ApJ...861...49H
Syntax of morphological type is : mtype quality bibcode
  • mtype : Hubble morphological class (spirals, ellipticals, etc)
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the morphological type reference
Morphological type: 		SABa C 2015ApJS..217...27A
Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode"
  • maj-axis : major axis size (arc minutes)
  • min-axis : minor axis size (arc minutes)
  • angle : orientation angle (in degrees)
  • (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam)
  • quality : flag of quality of the angular size values ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the angular size reference
Angular size (arcmin): 		4.27 2.19 156 (Opt) D 2003A&A...412...45P
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 (11) :
B 12.61 [~] D 2010A&A...518A..10V
V 11.79 [~] D 2010A&A...518A..10V
G 14.045648 [0.009846] C 2020yCat.1350....0G
J 8.588 [0.021] C 2006AJ....131.1163S
H 7.932 [0.024] C 2006AJ....131.1163S
K 7.639 [0.029] C 2006AJ....131.1163S
u (AB) 13.495 [0.003] C 2011yCat.2306....0A
g (AB) 12.356 [0.002] C 2011yCat.2306....0A
r (AB) 11.245 [0.005] C 2009ApJS..182..543A
i (AB) 10.796 [0.007] C 2009ApJS..182..543A
z (AB) 11.131 [0.002] C 2011yCat.2306....0A
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
Some important notes on this object about identifications and objects associations.
notes:

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

: 4
The count displayed here is the number of children objects.
The list obtained by clicking the button may be larger, as some children may be linked with different references or probability.

%This number is the number of distinct objets linked, by using this button, you will obtain all links (may be more than one) from that object to his children

: 8 		: 14 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (79) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NGC 3227 IRAS 10207+2007 TC 719 [DML87] 633
1A 1021+198 KPG 234b TIC 95471301 [HB91] 1020+201
3A 1021+203 LEDA 30445 UGC 5620 [KRL2007b] 87
AKARI-IRC-V1 J1023305+195154 LJHY 93 UZC J102330.6+195155 [LB2005] NGC 3227 X1
APG 94B 2MASS J10233057+1951542 VLSSr J102330.3+195139 [M98c] 102047.6+200700
1AXG J102330+1951 2MASX J10233060+1951538 VV 209 [NKB95] N3227
BWE 1020+2007 2MAXI J1023+199 VV 209a [RW2000] NGC 3227 X-1
7C 102046.5+200705 MAXI J1023+197 WISEA J102330.57+195154.3 [SMM2006b] J102330.58+195154.5
2E 2275 MCG+03-27-016 WISE J102330.58+195154.4 [T76] 16B
2E 1020.7+2007 NVSS J102330+195154 2XMM J102330.5+195153 [VDD93] 111
1ES 1020+20.1 PBC J1023.5+1951 XMMSL1 J102330.4+195157 [VV2000c] J102330.6+195156
FIRST J102330.5+195154 PSCz Q10207+2007 XSS J10231+1950 [VV2003c] J102330.6+195156
GB6 B1020+2007 1RXP J102330.2+195150 Z 94-28 [VV2006c] J102330.6+195156
87GB 102046.4+200729 RX J1023.5+1952 Z 1020.8+2006 [VV2010c] J102330.6+195156
GLEAM J102329+195158 RX J1023.5+1951 [BEC2010] HRS 4 [VV98c] J102330.6+195156
1H 1017+202 1RXS J102331.5+195143 [BGP2012] NGC 3227 C [WTW94] 1020+201
H 1019+203 SDSS J102330.57+195154.3 [CAB95] IRAS F10207+2007 [ZEH2003] RX J1023.5+1951 1
INTREF 412 SDSS J102330.58+195154.5 [CHM2007] HDC 577 J102330.60+1951538 AAVSO 1018+20
IRAS F10207+2007 SWIFT J1023.5+1952 [CHM2007] LDC 724 J102330.60+1951538 Gaia DR3 624759210030616448
IRAS 1020+201P15 SWIFT J1023.5+1951 [DC78] UGC 5620

References (1675 between 1850 and 2023) (Total 1675)
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 : 13    distance : 5    PM : 1   

   

Observing logs


herschel : 9    ISO : 6    IUE : 4    XMM : 2   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : NGC 3227

Link by name to the catalogue in VizieR :

NGC 3227 AKARI-IRC-V1 J1023305+195154 APG 94B BWE 1020+2007 2E 2275
FIRST J102330.5+195154 IRAS F10207+2007 IRAS 1020+201P15 IRAS 10207+2007 KPG 234b
2MASS J10233057+1951542 2MASX J10233060+1951538 NVSS J102330+195154 1RXS J102331.5+195143 SDSS J102330.57+195154.3
SDSS J102330.58+195154.5 UGC 5620 WISEA J102330.57+195154.3 WISE J102330.58+195154.4 [DML87] 633
Gaia DR3 624759210030616448

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2023.10.04-23:10:57

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