J/AJ/130/2541 Core of the Shapley supercluster at 1.4GHz (Miller+, 2005)
Star formation and active galactic nuclei in the core of the Shapley
supercluster: a Very Large Array survey of A3556, A3558, SC 1327-312,
SC 1329-313, and A3562.
Miller N.A.
<Astron. J., 130, 2541-2558 (2005)>
=2005AJ....130.2541M 2005AJ....130.2541M (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Radio sources ; Magnitudes
Keywords: galaxies: clusters: general -
galaxies: clusters: individual (Abell 3556, Abell 3558, Abell 3562) -
galaxies: evolution - radio continuum: galaxies
Abstract:
The core of the Shapley supercluster (A3556, A3558, SC 1327-312, SC
1329-313, and A3562) is an ideal region in which to study the effects
of cluster mergers on the activity of individual galaxies. This paper
presents the most comprehensive radio continuum investigation of the
region, relying on a 63 pointing mosaic obtained with the Very Large
Array yielding an areal coverage of nearly 7°2.
Description:
The initial radio observations were performed in 2001 June with the
VLA in its CnB configuration. A single additional 6hr track was
scheduled during the subsequent CnB configuration of the VLA in 2002
September.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 43 70 Summary of radio observations
table2.dat 91 210 Radio-detected galaxies with Rmag≤17.36
table4.dat 109 111 Absolute quantities for cluster radio galaxies
notes.dat 79 55 Notes
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See also:
J/A+AS/119/329 : VR photometry in the Shapley Supercluster (Slezak+, 1996)
J/AJ/110/463 : Kinematics of the Shapley supercluster (Quintana+ 1995)
J/MNRAS/285/898 : A3556 radio properties (Venturi+ 1997)
J/A+A/419/71 : 1.4GHz obs. and optical ident. in A3558 (Giacintucci+, 2004)
J/ApJ/485/447 : Evidence of substructure in A3558 (Dantas+ 1997)
J/MNRAS/296/599 : A3558 complex redshifts (Bardelli+, 1998)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Field Field identification
5- 6 I2 h RAh Hour of Right Ascension (J2000)
8- 9 I2 min RAm Minute of Right Ascension (J2000)
11- 14 F4.1 s RAs Second of Right Ascension (J2000)
16 A1 --- DE- Sign of the Declination (J2000)
17- 18 I2 deg DEd Degree of Declination (J2000)
20- 21 I2 arcmin DEm Arcminute of Declination (J2000)
23- 24 I2 arcsec DEs Arcsecond of Declination (J2000)
26- 27 I2 arcsec Beam1 Beam size (1)
29 A1 --- --- [X]
31- 32 I2 arcsec Beam2 Beam size (1)
34- 43 A10 "DD/MM/YYYY" ObsDate Date of the observation (2)
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Note (1): In the final imaging, all beams were restored with a 16"X16" Gaussian.
Note (2): All of the 2001 June observations were performed at night,
minimizing solar interference, while the 2002 September observations
occurred during daytime hours. Some data were lost due to strong
winds stowing the array on 06/20/2001, and only a few pointings were
successfully completed on 06/21/2001 due to mechanical problems.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Hour of Right Ascension (J2000)
4- 5 I2 min RAm Minute of Right Ascension (J2000)
7- 11 F5.2 s RAs Second of Right Ascension (J2000)
13 A1 --- DE- Sign of the Declination (J2000)
14- 15 I2 deg DEd Degree of Declination (J2000)
17- 18 I2 arcmin DEm Arcminute of Declination (J2000)
20- 23 F4.1 arcsec DEs Arcsecond of Declination (J2000)
25- 29 F5.2 mag Rmag The R band magnitude
31- 34 F4.2 mag e_Rmag Uncertainty in Rmag
36- 40 F5.2 mag Bmag The B band magnitude
42- 45 F4.2 mag e_Bmag Uncertainty in Bmag
47- 50 F4.2 mag B-R The (B-R) color index
52- 55 F4.2 mag e_B-R Uncertainty in B-R
57- 62 F6.2 mJy Si1.4GHz Radio integral flux density
64- 68 F5.2 mJy Sp1.4GHz Radio peak flux density in units of mJy/beam
70 A1 --- Res [RU] Resolved (R) or unresolved (U)
72- 75 F4.2 mJy rms Local rms noise in units of mJy/beam (1)
77- 79 F3.1 arcsec Sep ? Peak radio emission and optical position
separation (2)
81- 85 I5 km/s Vel ? Velocity from NED
87- 91 A5 --- Note Additional comments, detailed in notes.dat
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Note (1): Evaluated over a 6' box centered on the source.
Note (2): If not provided the radio source is extended and may be seen
in Figure 2-10.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 43 A43 --- Type Galaxy type
45- 46 I2 h RAh Hour of Right Ascension (J2000)
48- 49 I2 min RAm Minute of Right Ascension (J2000)
51- 55 F5.2 s RAs Second of Right Ascension (J2000)
57 A1 --- DE- Sign of the Declination (J2000)
58- 59 I2 deg DEd Degree of Declination (J2000)
61- 62 I2 arcmin DEm Arcminute of Declination (J2000)
64- 67 F4.1 arcsec DEs Arcsecond of Declination (J2000)
69- 73 F5.1 mag RMAG Absolute R band magnitude
75 A1 --- f_RMAG [i] Flag on RMAG (1)
77- 81 F5.2 10+22W/Hz L1.4GHz The 1.4GHz luminosity
83- 86 F4.2 Mpc rA3556 Projected distance to A3556
88- 91 F4.2 Mpc rA3558 Projected distance to A3558
93- 96 F4.2 Mpc rA3562 Projected distance to A3562
98-101 F4.2 Mpc rSC1327 Projected distance to SC1372
103-106 F4.2 Mpc rSC1329 Projected distance to SC1329
108-109 A2 --- Note Additional flag, detailed in notes.dat
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Note (1): An "i" indicates higher absolute magnitudes (i.e., fainter galaxies)
which have been rounded to the presented figure. All reported radio
luminosities have been calculated using an assumed spectral index of
0.7. For unresolved sources, they are based on the fitted peak flux
density (see text).
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- Note Note abbreviation
4- 79 A76 --- Text Text of the note
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 12-Apr-2006