J/MNRAS/390/289 Radio observations of A3158 (Johnston-Hollitt+, 2008)
Radio observations of the Horologium-Reticulum supercluster.
I. A3158: excess star-forming galaxies in a merging cluster ?
Johnston-Hollitt M., Sato M., Gill J.A., Fleenor M.C., Brick A.-M.
<Mon. Not. R. Astron. Soc., 390, 289-303 (2008)>
=2008MNRAS.390..289J 2008MNRAS.390..289J
ADC_Keywords: Clusters, galaxy ; Galaxies, radio ; Photometry, photographic ;
Redshifts
Keywords: galaxies: clusters: general - galaxies: clusters: individual: A3158 -
radio continuum: galaxies
Abstract:
We present 1.4- and 2.5-GHz Australia Telescope Compact Array (ATCA)
observations of the galaxy cluster A3158 (z=0.0597) which is located
within the central part of the Horologium-Reticulum supercluster
(HRS). Spectroscopic data for the central part of the HRS suggest that
A3158 is in a dynamically important position within the supercluster
and that it is moving toward the double cluster system A3125/A3128
which marks the centre of the HRS. A total of 110 radio galaxies are
detected in a 35-arcmin radius about the cluster at 1.4GHz, of which
30 are also detected at 2.5GHz.
Description:
Observations of A3158 were carried out at 1.384 and 2.496GHz on the
Australia Telescope Compact Array (ATCA) on five different occasions
throughout 1999. The data were taken in four array configurations (6A,
6B, 6C and 210m) and co-added to improve coverage in the uv plane. The
total observing time was 20.5h over all four configurations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 133 52 Details of detected radio sources with optical
counterparts detectable in the DSS
table4.dat 52 36 Details of radio sources detected within
23.05 arcmin of 03:42:53.00-53:37:43.0 for
which no optical counterpart is found
table5.dat 126 22 Details of detected radio source outside the area
considered for the radio luminosity function
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See also:
VII/155 : RC3 (de Vaucouleurs+ 1991)
J/ApJS/107/201 : The Stromlo-APM Redshift Survey IV (Loveday+ 1996)
J/A+AS/129/399 : The ENACS Catalogue. V. (Katgert+ 1998)
J/AJ/128/1558 : NOAO Fundamental Plane Survey (Smith+, 2004)
Byte-by-byte Description of file: table[345].dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Radio right ascension (J2000) (1)
4- 5 I2 min RAm Radio right ascension (J2000) (1)
7- 11 F5.2 s RAs Radio right ascension (J2000) (1)
13 A1 --- DE- Radio declination sign (J2000) (1)
14- 15 I2 deg DEd Radio declination (J2000) (1)
17- 18 I2 arcmin DEm Radio declination (J2000) (1)
20- 23 F4.1 arcsec DEs Radio declination (J2000) (1)
25- 30 F6.2 mJy S1.4 Total density at 1.4GHz
32- 35 F4.2 mJy e_S1.4 rms uncertainty on S1.4
37- 41 F5.2 mJy S2.5 ? Total density at 2.5GHz
43- 46 F4.2 mJy e_S2.5 ? rms uncertainty on S2.5
48- 52 F5.2 --- alpha ? Spectral index between 1.4GHz and 2.5GHz
54- 55 I2 h RAo.h ? Optical DSS right ascension (J2000)
57- 58 I2 min RAo.m ? Optical DSS right ascension (J2000)
60- 64 F5.2 s RAo.s ? Optical DSS right ascension (J2000)
66 A1 --- DEo.- Optical DSS declination sign (J2000)
67- 68 I2 deg DEo.d ? Optical DSS declination (J2000)
70- 71 I2 arcmin DEo.m ? Optical DSS declination (J2000)
73- 76 F4.1 arcsec DEo.s ? Optical DSS declination (J2000)
78- 85 F8.6 --- z ? Redshift of optical source
87- 94 F8.6 --- e_z ? rms uncertainty on z
96 I1 --- r_z [1/5]? Reference for redshift (2)
98-102 F5.2 mag Bmag ? Blue magnitude
104-133 A30 --- Name Name of optical source name as returned by
the NASA Extragalactic Database
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Note (1): Galaxies identified as [JSG2008] JHHMMSS.ss+DDMMSS.s in Simbad.
Note (2): Redshift references as follows:
1 = Katgert et al. (1998, Cat. J/A+AS/129/399)
2 = Loveday et al. (1996, Cat. J/ApJS/107/201)
3 = Smith et al. (2004, Cat. J/AJ/128/1558)
4 = de Vaucouleurs et al. (1991, Cat. VII/155)
5 = Lucey et al. (1983MNRAS.203..545L 1983MNRAS.203..545L)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 09-Mar-2009