NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-04-23 T03:58:46 PDT
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Velocity(km/s): Unconstrained
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Parameters for Distances and Cosmology: Ho= 73.0; Ωmatter = 0.27; Ωvacuum = 0.73;
Derived Quantities use a Redshift corrected to a Reference Frame defined by the 3K CMB

Detailed Information for Object No. 3

INDEX for NGC 7018 NED02
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Cross-IDs    
   Coordinates    
   Basic Data   
   Quantities Derived from Redshift    
   Redshift-Independent Distances
   Quick-Look Photometry and Luminosities
   Quick-Look Angular and Physical Sizes
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):

Images
   
20 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
18 Reference(s)   
6 Position data point(s)
5 Redshift data point(s)   
2 Diameter data point(s)   

ESSENTIAL NOTE for NGC 7018 NED02 (Back to INDEX)
May be a resolved component of another radio source.                            

CROSS-IDENTIFICATIONS for NGC 7018 NED02 (Back to INDEX)
Object Names Type Object Names Type
NGC 7018 NED02G GSG 002 G
ESO 529-IG 027 NED02 G CRATES J2107-2525 NED02 RadioS
ESO 210430-2537.9 NED02 G CRATES J210725.65-252542.8 RadioS
MCG -04-49-015 NED02 G [PCd91] 210429.88-253749.4 G
2MASX J21072565-2525430 IrS ABELL 3744:[GMT93] G G
2MASXi J2107256-252542 IrS ABELL 3744:[PL95] G5 G
2MASS J21072565-2525432 IrS ABELL 3744:[QR95] 1E G
GALEXASC J210725.48-252544.3 UvS [DZ2015] 292-01 G

COORDINATES for NGC 7018 NED02 (Back to INDEX)

Position Reference:2007ApJS..171...61H

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0) 316.1245906 -25.6304991 21h04m29.902s -25d37m49.80s  1.50E-01  1.50E-01    0
Equatorial (J2000.0) 316.8568750 -25.4285556 21h07m25.650s -25d25m42.80s  1.50E-01  1.50E-01    0
Ecliptic   (B1950.0) 311.0849745  -8.5236867                              1.50E-01  1.50E-01    0
Ecliptic   (J2000.0) 311.7842949  -8.5281870                              1.50E-01  1.50E-01    0
Galactic              21.4650080 -40.1823719                              1.50E-01  1.50E-01    0
SuperGalactic        245.0358698  37.7360462                              1.50E-01  1.50E-01    0
Additional detailed measurements with references are also available by clicking below:
6 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for NGC 7018 NED02 (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 7018 NED02 (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
HierarchyG5Group member, 5th ranked galaxy...1995ApJ...440...28P
1 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for NGC 7018 NED02 (Back to INDEX)
Galactic Extinction from the Schlafly & Finkbeiner 2011, Appendix; 2011ApJ...737..103S (SF11) recalibration 
of the Schlegel, Finkbeiner & Davis 1998, Appendix B; 1998ApJ...500..525S (SFD98) infrared-based dust map.
The map is based on dust emission from COBE/DIRBE and IRAS/ISSA;
the recalibration assumes a Fitzpatrick (1999PASP..111...63F) reddening law with Rv = 3.1 and different source spectrum than SFD98.

L a n d o l tS D S SU K I R T
Filter [µm]U (0.35)B (0.43)V (0.54)R (0.64)I (0.80)u (0.36)g (0.47)r (0.62)i (0.75)z (0.89)J (1.25)H (1.66)K (2.19)L' (3.78)
Aλ [mag]0.2850.2390.1810.1430.0990.2790.2180.1500.1120.0830.0470.0300.0200.010
Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
For completeness, we include the original SFD98 values:
L a n d o l tS D S SU K I R T
Filter [µm]U (0.34)B (0.44)V (0.54)R (0.65)I (0.81)u (0.35)g (0.49)r (0.63)i (0.78)z (0.93)J (1.27)H (1.67)K (2.22)L' (3.81)
Aλ [mag]0.3480.2760.2120.1710.1240.3300.2430.1760.1340.0950.0580.0370.0230.010


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.240 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 7018 NED02 (Back to INDEX)
Helio. Radial Velocity     :     11517 +/-       21 km/s      
Redshift                   :  0.038417 +/- 0.000070        1995ApJS...96..343Q
Major Diameter (arcmin)    :      
Minor Diameter (arcmin)    :      
Magnitude and Filter       : 14.37
Classifications            : Part of dumbbell sys

NOTE: This information is indicative only. With the exception of the
      redshift they are unreferenced and highly inhomogeneous as to
      their origin. The Radial Velocity (when available) is computed
      from the listed redshift. The remaining values are designed to
      orient the user with a quick-look, overall assessment of the
      general properties of the object in question. They are not
      averages nor are they standardized in any way.
Additional detailed measurements with references are also available by clicking below:
5 Redshift data point(s)      20 photometric data point(s)      2 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for NGC 7018 NED02 (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :   11517 +/-     21 km/s      1995ApJS...96..343Q
V (Kinematic LSR)          :   11524 +/-     21 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :   11584 +/-     21 km/s      1991RC3.9.C...0000d
V (Local Group)            :   11608 +/-     22 km/s      1996AJ....111..794K
V (3K CMB)                 :   11252 +/-     28 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :   11493 +/-     23 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :   11633 +/-     25 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :   11668 +/-     25 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :   158.7 +/-   11.1 Mpc      (m-M) = 36.00 +/- 0.15 mag
D (Local Group)            :   159.0 +/-   11.1 Mpc      (m-M) = 36.01 +/- 0.15 mag
D (3K CMB)                 :   154.1 +/-   10.8 Mpc      (m-M) = 35.94 +/- 0.15 mag
D (Virgo Infall only)      :   157.4 +/-   11.0 Mpc      (m-M) = 35.99 +/- 0.15 mag
D (Virgo + GA only)        :   159.4 +/-   11.2 Mpc      (m-M) = 36.01 +/- 0.15 mag
D (Virgo + GA + Shapley)   :   159.8 +/-   11.2 Mpc      (m-M) = 36.02 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :     769 pc/arcsec =  0.769 kpc/arcsec =  46.16 kpc/arcmin =   2.77 Mpc/degree
Scale (Local Group)        :     771 pc/arcsec =  0.771 kpc/arcsec =  46.25 kpc/arcmin =   2.78 Mpc/degree
Scale (3K CMB)             :     747 pc/arcsec =  0.747 kpc/arcsec =  44.84 kpc/arcmin =   2.69 Mpc/degree
Scale (Virgo Infall only)  :     763 pc/arcsec =  0.763 kpc/arcsec =  45.80 kpc/arcmin =   2.75 Mpc/degree
Scale (Virgo + GA only)    :     773 pc/arcsec =  0.773 kpc/arcsec =  46.36 kpc/arcmin =   2.78 Mpc/degree
Scale(Virgo + GA + Shapley):     775 pc/arcsec =  0.775 kpc/arcsec =  46.50 kpc/arcmin =   2.79 Mpc/degree

To Search for Nearby Objects (Physical Companions): Enter Your Preferred Values and click on "Submit Environment Search" button
Search for Objects within +/-arcmin where 100 kpc = 2.151 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 11517 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.037532 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 159 Mpc (m-M) = 36.00 mag Angular-Size Distance : 147 Mpc (m-M) = 35.84 mag Co-Moving Radial Distance : 153 Mpc (m-M) = 35.92 mag Co-Moving Tangential Dist. : 153 Mpc (m-M) = 35.92 mag Co-Moving Volume : 0.015 Gpc^3 Light Travel-Time : 0.490 Gyr Age at Redshift 0.037532 : 12.809 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 715 pc/arcsec = 0.715 kpc/arcsec = 42.88 kpc/arcmin = 2.57 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.86297; Magnitude per Unit Area = 0.16 mag
To change Cosmological Input Parameters for Derived Quantities: Enter Your Preferred Values and click on "Submit Changed Hubble Parameters for this object" button
HoΩmatterΩvacuum     
Correct Redshift To the Reference Frame defined by: as Input for Calculation of the Distances and Cosmology-Corrected Quantities

QUICK-LOOK PHOTOMETRY and LUMINOSITIES for NGC 7018 NED02 (Back to INDEX)

The brightest flux in each of the following spectral regions, when available:
Gamma-Ray (ν > 2E19 Hz); X-Ray (2E19 Hz > ν > 2E16 Hz); Ultraviolet (2E16 Hz > ν > 9E14 Hz); Visual (9E14 Hz > ν > 3E14 Hz);
Near-Infrared (3E14 Hz > ν > 6E13 Hz); Mid-Infrared (6E13 Hz > ν > 7.5E12 Hz); Far-Infrared (7.5E12 Hz > ν > 1E12 Hz);
Sub-Millimeter (1E12 Hz > ν > 3E11 Hz); Millimeter (3E11 Hz > ν > 3E10 Hz); Radio (3E10 Hz > ν).

Spectral
Region
Band Apparent Mag or Flux Refcode Absolute Mag or νLν [W] νLν [L(Bolometric)]
UltravioletNUV (GALEX) AB 19.6074 +/- 0.132449 mag 2012GASC..C...0000S-16.40 +/- 0.52 [mag] 5.27E+08 +/- 1.23E+08
Near-InfraredH 10.404 +/- 0.017 mag 20032MASX.C.......:-25.60 +/- 0.50 [mag] 1.01E+11 +/- 2.02E+10
Radio8.4 GHz (VLA) 14.2 milliJy 2007ApJS..171...61H 3.59E+32 [W] 9.35E+05
NOTE: The above quantities are derived using a Distance Modulus of 36.00 mag corresponding to
a Luminosity Distance of 158.7 Mpc [assuming 10%uncertainty] using the Cosmology-Corrected Quantities.
The quantities quoted above have not necessarily been corrected for foreground extinction, and no K-Corrections have been applied.

View details and SED for 20 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 7018 NED02 (Back to INDEX)

The largest diameters in the Visual and Near-Infrared spectral regions, when available:

Passband Apparent Major Axis
(2a) [arcsec]
Apparent Minor Axis
(2b) [arcsec]
PA
[degrees]
(J2000.0)
Reference Level RefcodePhysical Major Axis
(2a) [kpc]
Physical Minor Axis
(2b) [kpc]
K_s (2MASS "total") 72.7042.1795 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:56.3432.68
NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 0.775 kpc/arcsec.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 2 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for NGC 7018 NED02 Help (Back to INDEX)
Resources for Object NamesSite/Service
2MASS Extended Source Images (JHKs) -- 2MASX J21072565-2525430 NASA/IPAC Infrared Science Archive (IRSA)
2MASS Extended Source Images (JHKs) -- 2MASXi J2107256-252542 NASA/IPAC Infrared Science Archive (IRSA)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 7018 NED02GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 7018 NED02NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 21h07m25.6s, -25d25m43s (J2000)Site/Service
Query Optical and UV Mission Archives (Default search radius)Multimission Archive at STScI (MAST)
Query High Energy Mission Archives (Default search radius)HEASARC (NASA/GSFC)
Query IRSA for WISE images (10 arcmin search radius)NASA/IPAC Infrared Science Archive (IRSA)
Band(s): Size:
NASA/IPAC Infrared Science Archive (IRSA)
Band(s): Size:
NASA/IPAC Infrared Science Archive (IRSA)
NASA/IPAC Infrared Science Archive (IRSA)
 Size:    Contours (PS)  JPEG  FITS File 
NRAO/VLA Sky Survey (NVSS)
The NRAO Data Archive System





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