J/ApJS/146/267 Very rich Abell clusters radio analysis (Morrison+, 2003)
Radio-selected galaxies in very rich clusters at z≤0.25.
I. Multiwavelength observations and data reduction techniques.
Morrison G.E., Owen F.N., Ledlow M.J., Keel W.C., Hill J.M., Voges W.,
Herter T.
<Astrophys. J. Suppl. Ser. 146, 267 (2003)>
=2003ApJS..146..267M 2003ApJS..146..267M
ADC_Keywords: Clusters, galaxy ; Radio continuum ; Redshifts
Keywords: galaxies: clusters: general - galaxies: evolution -
galaxies: starburst - radio continuum: galaxies
Abstract:
Radio observations were used to detect the "active" galaxy population
within rich clusters of galaxies in a nonbiased manner that is not
plagued by dust extinction or the K-correction. We present wide-field
radio, optical (imaging and spectroscopy), and ROSAT All-Sky Survey
(RASS, Cat. IX/10) X-ray data for a sample of 30 very rich Abell
(R≥2) cluster with z≤0.25. The VLA radio data samples the ultrafaint
radio (L(1.4GHz)≥2x1022W/Hz) galaxy population within these
extremely rich clusters for galaxies with RMAG≤-21. This is the
largest sample of low-luminosity 20 cm radio galaxies within rich
Abell clusters collected to date.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table3.dat 74 36 Cluster sample
table4.dat 107 150 Optical Identifications
--------------------------------------------------------------------------------
See also:
VII/110 : Rich Clusters of Galaxies (Abell+ 1989)
IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- --- [A]
2- 5 I4 --- Abell Abell cluster name
6- 7 A2 --- n_Abell [ab ] Note on Abell name (1)
9- 10 I2 h RAh Cluster X-ray center right ascension (J2000.0)
12- 13 I2 min RAm Cluster X-ray center right ascension (J2000.0)
15- 18 F4.1 s RAs Cluster X-ray center right ascension (J2000.0)
20 A1 --- DE- Cluster X-ray center declination sign (J2000.0)
21- 22 I2 deg DEd Cluster X-ray center declination (J2000.0)
24- 25 I2 arcmin DEm Cluster X-ray center declination (J2000.0)
27- 28 I2 arcsec DEs Cluster X-ray center declination (J2000.0)
30- 34 F5.3 --- z Cluster redshift from NED
36- 38 I3 --- N0.5 ? Bahcall richness counts
(Bahcall, 1981ApJ...247..787B 1981ApJ...247..787B)
40- 42 I3 --- N2.0 ? Abell richness counts
(Abell et al., 1989, Cat. VII/110)
44- 47 F4.2 --- fB ? Cluster blue fraction
48 A1 --- n_fB [c] Note on fB
50- 51 I2 --- NRadio ? Number of galaxies with radio emission within
2.5Mpc of the cluster center that have
optical identification
53- 54 I2 --- NRadioz ? Galaxies from this group that have measured
redshifts
56- 59 F4.2 --- fSBRG ? Total number of radio galaxies with
L(1.4GHz)≤1022.75W/Hz normalized by the
total number of galaxies searched within
2.5Mpc of the cluster center and with
RMAG brighter than -21.
61- 64 F4.2 --- e_fSBRG ? rms uncertainty on fSBRG
66- 69 F4.2 --- fHLRG ? Total number of radio galaxies with
L(1.4GHz)≥1023W/Hz normalized by the
total number of galaxies searched within
2.5Mpc of the cluster center and with
RMAG brighter than -21.
71- 74 F4.2 --- e_fHLRG ? rms uncertainty on fHLRG
--------------------------------------------------------------------------------
Note (1): Note on Name:
a: Abell (1958, Cat. VII/4) optical center used
b: Superposition of poor clusters
c: Blue fractions from Butcher & Oemler, 1984ApJ...285..426B 1984ApJ...285..426B
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 28 A28 --- Sample Sample
30 A1 --- --- [A]
31- 34 I4 --- Abell Abell cluster name
36- 48 A13 --- [MOL2003] Object name (1)
50- 51 I2 h RAh Hour of Right Ascension (J2000)
53- 54 I2 min RAm Minute of Right Ascension (J2000)
56- 60 F5.2 s RAs Second of Right Ascension (J2000)
62 A1 --- DE- Sign of the Declination (J2000)
63- 64 I2 deg DEd Degree of Declination (J2000)
66- 67 I2 arcmin DEm Arcminute of Declination (J2000)
69- 72 F4.1 arcsec DEs Arcsecond of Declination (J2000)
74- 77 F4.2 Mpc Dist Distance from the X-ray defined cluster center
79- 84 F6.4 --- z ? Redshift
86 A1 --- f_z [ad*] Flag on z (2)
89- 93 F5.1 mag RMAG Absolute R-band magnitude
95 A1 --- f_RMAG [bc] Flag on RMAG (3)
97-100 F4.2 --- B-R ? The (B-R) color
102-106 F5.2 [W/Hz] L1.4GHz Log of the 1.4GHz luminosity
--------------------------------------------------------------------------------
Note (1): In the format HHMMSS+DDMMSS,
Identified as [MOL2003] JHHMMSS+DDMMSS in Simbad
Note (2): Flags on z:
a = Redshift from NED;
* = Another measurement of this redshift is reported in NED;
d = Measured redshift had a Tonry & Davis (1979AJ.....84.1511T 1979AJ.....84.1511T)
R≤4, and is therefore unreliable.
Note (3): Flags on RMAG:
b = Data from Ledlow & Owen (1995, Cat. J/AJ/110/1959) was used to
calibrate the magnitude zero point on DSS image;
c = The CCD image was used to calibrate the magnitude zero point on
the DSS image.
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 16-Jun-2003