CDS

1998A&AS..129..637P

Query : 1998A&AS..129..637P

1998A&AS..129..637P - Astron. Astrophys., Suppl. Ser., 129, 637-645 (1998/May-1)

Deconvolution of interferometric observations by MIM.

PFLEIDERER J. and KOEB G.

Abstract (from CDS):

We derive deconvolution equations - dirty map and dirty beam - without use of Fourier transforms. We thus avoid interpolation of observed complex visibilities (CVs) as well as aliasing effects. MIM (= minimum information method) implies the modification of the dirty beam such that a straightforward deconvolution without constraints gives a smoothed result. Smoothing can be diminished at edges and point sources by modification of the dirty map near these features. We give test examples in which we discuss in detail the Gibbs phenomenon encountered in any smoothed deconvolution of sharp features. Finally, we deconvolve old VLBI observations of 3C 309.1.

Abstract Copyright: ∼

Journal keyword(s): methods: data analysis - techniques: image processing, interferometric - quasars: individual: 3C 309.1

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 ICRF J145907.5+714019 Sy1 14 59 07.58390804 +71 40 19.8668093   17.24 16.78 17.2   ~ 484 1

Query : 1998A&AS..129..637P

Basic data :
ICRF J145907.5+714019 -- 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 (), Rad (2014ApJS,ICRF,...), QSO (2013ApJS,QSO,...), X (2009A&A,1E,...), Bla (2009A&A,[MGL2009],...), * (USNO,Gaia), MIR (WISEA,WISE), AGN (2020MNRAS), Bz? (2015Ap&SS), G (LEDA), UV (GALEX), NIR (2MASS), IR (2MASSI)
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) : 		14 59 07.58390804 +71 40 19.8668093 (Radio) [ 0.0349515 0.038 0 ] A 2020A&A...644A.159C
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) : 		14 58 56.63378722 +71 52 11.2847071 [ 0.0349515 0.038 0 ]
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) : 		109.98292822569 +42.09709088518 [ 0.0349515 0.038 0 ]
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 : 		0.061 0.042 [0.057 0.059 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) 170159 [~] / z(emission) 0.904 [~] / cz 271012 [~]
   (Opt) D 2016ApJ...818..113N
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 (7) :
B 17.24 [~] D 2010A&A...518A..10V
V 16.78 [~] D 2010A&A...518A..10V
R 17.2 [~] E 2009A&A...495..691M
G 16.882818 [0.007648] C 2020yCat.1350....0G
J 15.739 [0.073] C 2003yCat.2246....0C
H 15.399 [0.122] D 2003yCat.2246....0C
K 14.721 [0.122] 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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sedIcon
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:

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (61) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

ICRF J145907.5+714019 LEDA 2821824 S5 1458+718 [S77] 304
BWE 1458+7151 2MASS J14590760+7140199 S5 1458+71 [SJS95] 1458+718
3C 309.1 2MASSI J1459075+714019 SWIFT J1458.9+7143 [VV2000] J145907.6+714020
4C 71.15 MY 145856.9+715210.0 TIC 233186251 [VV2003] J145907.6+714020
6C 145857+715211 MY 145856.9+714018.6 USNO-A2.0 1575-03487783 [VV2006] J145907.6+714020
7C 145856.29+715212.00 NRAO 464 VLSS J1459.1+7140 [VV2010] J145907.6+714020
8C 1458+718 NVSS J145907+714019 WB 1458+7151 [VV96] J145907.6+714020
1E 1458.9+7152 QSO B1458+7152 WISEA J145907.59+714019.8 [VV98] J145907.6+714020
2E 3367 QSO B1458+71 WISE J145907.59+714019.8 [WTW94] 1458+718
2E 1458.9+7152 QSO B1458+718 WN B1458.9+7152 [ZEH2003] RX J1459.1+7140 1
GALEX J145907.5+714019 QSO J1459+7140 XMMSL1 J145907.4+714011 Gaia DR3 1695547569704716672
GB6 B1458+7152 RGB J1459+716 [A96] 3C 309.1 5 Gaia DR1 1695547569704716672
87GB 145855.9+715157 RGB J1459.1+7140 [CGL99] 15 Gaia DR2 1695547569704716672
IERS B1458+718 RORF 1458+718 [HB93] 1458+718
1Jy 1458+718 RX J1459.1+7140 [MGL2009] BZU J1459+7140
1Jy 1458+71 1RXS J145907.7+714014 [MML2015] 5BZU J1459+7140

References (484 between 1850 and 2023) (Total 484)
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 : 9    PM : 2   

   

Observing logs


herschel : 4    ISO : 3    IUE : 1   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : ICRF J145907.5+714019

Link by name to the catalogue in VizieR :

BWE 1458+7151 3C 309.1 4C 71.15 2E 3367 GALEX J145907.5+714019
IERS B1458+718 2MASS J14590760+7140199 2MASSI J1459075+714019 NVSS J145907+714019 1RXS J145907.7+714014
USNO-A2.0 1575-03487783 WISEA J145907.59+714019.8 WISE J145907.59+714019.8 WN B1458.9+7152 Gaia DR3 1695547569704716672
Gaia DR1 1695547569704716672 Gaia DR2 1695547569704716672

Search by coordinates in Vizier (radius: 5 arcsec)

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2023.06.03-19:07:39

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