J/ApJS/122/81 HST snapshot survey of 3CR radio sources (Martel+, 1999)
Hubble Space Telescope Snapshot Survey of 3CR Radio Source Counterparts.
III. Radio Galaxies with z < 0.1
Martel, A. R., Baum S. A., Sparks W. B., Wyckoff E., Biretta J. A.,
Golombek D., Macchetto F. D., de Koff S., McCarthy P. J., Miley G. K.
<Astrophys. J. Suppl. Ser. 122, 81 (1999)>
=1999ApJS..122...81M 1999ApJS..122...81M
ADC_Keywords: Galaxies, optical; Photometry; Radio sources
Mission_Name: HST
Keywords: galaxies: elliptical and lenticular, cD - galaxies: interactions -
galaxies: jets - galaxies: nuclei - galaxies: structure - surveys
Abstract:
We present and describe optical counterparts to 46 3CR radio galaxies
of redshifts less than 0.1 that were imaged with the Hubble Space
Telescope's (HST) WFPC2 camera through the broadband F702W filter as
part of the 3CR Snapshot Survey. This is the fifth and last such paper
describing the 252 radio galaxies of this R-band survey. At the 0.1''
resolution of the images, a wealth of detail is visible. Approximately
89% of the galaxies are ellipticals, and nearly all reside in groups
or clusters of galaxies of various richness and compactness. Nearby
elliptical companions of slightly smaller size and mass are common.
Dust is prevalent in the cores of the 3C hosts; nearly half of the
galaxies possess some type of dust structure, such as irregular dust
lanes, filaments, or disks. Besides the well-known dust disks of
3C 264 and 3C 270, we have found five new candidates in
3C 31, 3C 40, 3C 296, 3C 449, and 3C 465, as well as in the central
regions of the nearby neighbors of 3C 31 and 3C 465. Our sample
includes six confirmed optical synchrotron jets in
3C 15, 3C 66B, 3C 78, 3C 264, 3C 274, and 3C 371, or approximately 13%
of the sample. Unresolved nuclei, consistent with the point spread
function of WFPC2, are found in 43%-54% of the galaxies and in the
majority of galaxies with dust disks and optical jets.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 86 47 Radio properties of the 3CR sources: z<0.1
table3.dat 93 47 Optical properties of the 3CR sources: z<0.1
refs.dat 61 39 References to table2.dat
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See also:
VIII/1 : The 3CR Catalogue (Bennett, 1962)
J/PASP/97/932 : 3CR Source Identifications (Spinrad 1985)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 5 F5.1 --- 3CR Name of 3rd Cambridge Radio Source
7 A1 --- n_3CR Source location note
10- 15 F6.4 --- z ? Redshift of the source (Spinrad+
(1985PASP...97..932S 1985PASP...97..932S)
18- 23 F6.1 Jy Rflux Radio flux density at 178 MHz (Spinrad+
(1985)
25- 30 F6.1 [W/Hz] Rpow Log radio power at 178 MHz
34- 38 F5.2 --- Sp-Index Spectral index between 178 and 408 MHz
(Spinrad+ 1985PASP...97..932S 1985PASP...97..932S)
41- 43 I3 deg PA ? Position angle measured north through east
45- 46 A2 --- n_PA Position angle defined by: j = through jet,
ls = through large-scale structure
48- 52 I5 arcsec Asize ? Largest angular size (LAS) of Radio source
projected on the the sky (Spinrad+
(1985PASP...97..932S 1985PASP...97..932S)
56- 60 I5 kpc Psize ? Largest physical size of Radio source
calculated from LASrad (Spinrad+
(1985PASP...97..932S 1985PASP...97..932S)
63- 69 A7 --- FRtype Fanaroff-Riley type: I = no hotspots,
II = hotspots at the ends of the sources
71- 75 A5 --- SLprop Spectral line properties (Spinrad+
(1985PASP...97..932S 1985PASP...97..932S) (1)
77- 86 A10 --- r_3CR References in file refs.dat
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Note (1):
ABS = absorption lines
WE = weak emission
E = Emission
SE = Strong emission
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 5 F5.1 --- 3CR Name of 3rd Cambridge Radio Source
7 A1 --- n_3CR Source location note
11- 12 I2 h RAh Right Ascension (B1950)
14- 15 I2 min RAm Right Ascension (B1950)
17- 21 F5.2 s RAs Right Ascension (B1950)
23 A1 --- DE- Sign of the Declination
24- 25 I2 deg DEd Declination (B1950)
27- 28 I2 arcmin DEm Declination (B1950)
30- 34 F5.2 arcsec DEs Declination (B1950)
36 A1 --- l_R20 Lower limit flag on the magnitude
37- 41 F5.2 mag R20 R band magnitude above an isophotal
level of 20 mag.arcsec-2
43 A1 --- l_SB20 Upper limit flag on the Surface
Brightness
44- 48 F5.2 mag.arcsec-2 SB20 Average surface brightness above an
isophotal level of 20 mag.arcsec-2
51- 55 F5.2 mag R1 R band magnitude inside a 1 kpc circular
aperture
58- 62 F5.2 mag.arcsec-2 SB1 Average surface brightness inside a
1 kpc circular aperture
65- 69 F5.1 deg PA Optical position angle
70 A1 --- n_PA Position angle note (1)
75- 78 F4.2 --- epsil Ellipticity
81- 85 F5.1 --- LAS Largest Angular size of the optical
source
89- 93 F5.1 kpc Dia Physical size calculated from LAS
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Note (1): The data in PA and epsil are measured for the entire light
distribution above an isophotal level of 20 mag.arcsec-2 except for
those marked with a colon in n_PA, which were measured at brighter
isophotes to avoid the edges of the chip and/or nearby companions or
stars
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Seq Sequence number from table2.dat
5- 23 A19 --- Bibcode Reference code sequence
26- 65 A40 --- Com Comments on references
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History:
From ApJ Electronic edition
References:
de Koff+, HST Snapshot Survey of 3CR Radio Source Counterparts. I.
Intermediate Redshifts. 1996ApJS..107..621D 1996ApJS..107..621D
Lehnert+, HUBBLE SPACE TELESCOPE Snapshot Survey of 3CR Quasars:
The Data. 1999ApJS..123..351L 1999ApJS..123..351L
McCarthy+, Hubble Space Telescope Snapshot Survey of 3CR Radio Source
Counterparts. II. Radio Galaxies with Z > 0.5. 1997ApJS..112..415M 1997ApJS..112..415M
(End) Greg Schwarz (AAS) 31-Jan-2000