2005A&A...444..983H


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.12CEST12:57:31

2005A&A...444..983H - Astronomy and Astrophysics, volume 444, 983-993 (2005/12-4)

Reconstruction of aperture-synthesis images from LBT LINC-NIRVANA data using the Richardson-Lucy and space-variant Building Block method.

HOFMANN K.-H., DRIEBE T., HEININGER M., SCHERTL D. and WEIGELT G.

Abstract (from CDS):

We present a new method, the regularized and space-variant Building Block method, which is able to reconstruct diffraction-limited aperture-synthesis images from Large Binocular Telescope (LBT) LINC-NIRVANA data. Images with the diffraction-limited resolution of a 22.8m single-dish telescope can be derived if raw images are taken at several different hour angles. We simulated computer-generated and laboratory LBT interferograms that are similar to the data which can be obtained with the LINC-NIRVANA beam combiner instrument. From the simulated data, diffraction-limited images were reconstructed with the regularized Building Block method, which is an extension of the Building Block method (Hofmann & Weigelt, 1993A&A...278..328H). We compare the Building Block reconstructions to images obtained with the Richardson-Lucy (RL) method (Richardson 1972, J. Opt. Soc. Am., 62, 55; Lucy, 1974AJ.....79..745L) and the Ordered Subsets Expectation Maximization (OSEM) method (Hudson & Larkin 1994, IEEE Trans. Med. Imag., 13, 601; Bertero & Boccacci, 2000A&AS..144..181B). Our image reconstruction studies were performed with computer-simulated J-band and laboratory H-band raw data of a galaxy with simulated total magnitudes of J=16m to 18m and H=16m to 19m, respectively. One of the faintest structures in the images has a brightness of J∼25m. The simulated reference stars within the isoplanatic patch have magnitudes of J=20m-21m and H=19m. All three methods are able to reconstruct diffraction-limited images with almost the same quality. Furthermore, raw data with space-variant point spread functions were simulated, and diffraction-limited images were reconstructed using the space-variant version of the Building Block method.

Abstract Copyright:

Journal keyword(s): instrumentation: interferometers - instrumentation: high angular resolution - techniques: image processing - techniques: high angular resolution - techniques: miscellaneous

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 - 2020
#notes
1 NGC 3504 LIN 11 03 11.191 +27 58 20.77   13.48 12.93     ~ 485 2

    Equat.    Gal    SGal    Ecl

C.D.S. - SIMBAD4 rel 1.7 - 2020.07.12CEST12:57:31

Available data : Basic data  •  Identifiers  •  Plot & images  •  Bibliography  •  Measurements  •  External archives  •  Notes  •  Annotations


Basic data :
NGC 3504 -- LINER-type 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:
LIN (), G (Ref,2015ApJS..218...10V,...), Rad (B2,BWE,...), AGN ([VV2000c],[VV2003c],...), IR (IRAS,PSCz,...), X (2E,RX,...), GiC ([BVC99],[KK90]), GiG ([CHM2007])
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) :
11 03 11.191 +27 58 20.77 (Infrared) [ ] C 2006AJ....131.1163S
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) :
11 00 28.481 +28 14 30.75 [ ]
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) :
204.602795 +66.040005 [ ]
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) 1526 [11] / z(~) 0.005104 [0.000037] / cz 1530.14 [11.09]
   D 2002LEDA.........0P
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:
SBab 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):
1.857 0.928 155 (NIR) C 2006AJ....131.1163S
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 (10) :
B 13.48 [~] D 2010A&A...518A..10V
V 12.93 [~] D 2010A&A...518A..10V
J 9.242 [0.009] C 2006AJ....131.1163S
H 8.609 [0.012] C 2006AJ....131.1163S
K 8.273 [0.014] C 2006AJ....131.1163S
u (AB) 13.455 [0.002] C 2011yCat.2306....0A
g (AB) 12.107 [0.002] C 2011yCat.2306....0A
r (AB) 11.390 [0.002] C 2011yCat.2306....0A
i (AB) 11.074 [0.002] C 2011yCat.2306....0A
z (AB) 10.795 [0.002] C 2011yCat.2306....0A
SIMBAD with radius arcmin
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within radius 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!).
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 ) :

: 2
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
: 6 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (44) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NGC 3504 KUG 1100+282 TXS 1100+282 [DC78] UGC 6118
B2.2 1100+28 LEDA 33371 UGC 6118 [DML87] 639
BWE 1100+2814 2MASX J11031119+2758207 UZC J110311.2+275820 [KK90] 20
2E 2388 MCG+05-26-039 VLSS J1103.1+2758 [M98c] 110028.1+281435
2E 1100.4+2814 MITG J110310+2759 WB 1100+2814 [NKB95] N3504
FIRST J110311.2+275821 NVSS J110311+275821 Z 155-49 [VDD93] 127
GB6 B1100+2814 PSCz Q11004+2814 Z 1100.4+2815 [VV2000c] J110311.2+275822
87GB 110028.4+281441 RX J1103.2+2758 [BEC2010] HRS 36 [VV2003c] J110311.2+275822
IRAS 11004+2814 1RXS J110311.1+275815 [BVC99] 7 [VV2006c] J110311.2+275822
IRAS F11004+2814 SDSS J110311.24+275820.5 [CAB95] IRAS F11004+2814 [VV2010c] J110311.2+275822
IRAS 1100+282P15 SDSS J110311.24+275820.2 [CHM2007] LDC 763 J110311.19+2758207 [VV98c] J110311.2+275822

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References (485 between 1850 and 2020) (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


distance : 4    velocities : 14   

   

Observing logs


herschel : 3    IUE : 2   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : NGC 3504

Link by name to the catalogue in VizieR :

NGC 3504 BWE 1100+2814 2E 2388 FIRST J110311.2+275821 IRAS 11004+2814
IRAS F11004+2814 IRAS 1100+282P15 KUG 1100+282 2MASX J11031119+2758207 MITG J110310+2759
NVSS J110311+275821 1RXS J110311.1+275815 SDSS J110311.24+275820.5 SDSS J110311.24+275820.2 UGC 6118
[DML87] 639

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2020.07.12-12:57:31

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