J/ApJ/317/102 Cancer cluster 1.4GHz continuum sources (Salpeter+, 1987)
1.4 GHz continuum sources in the Cancer cluster.
Salpeter E.E., Dickey J.M.
<Astrophys. J. 317, 102 (1987)>
=1987ApJ...317..102S 1987ApJ...317..102S (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Galaxies, radio
Keywords: galaxies: clustering - galaxies: structure - radio sources: galaxies
Abstract:
We report on 1.4GHZ continuum observations for 11 VLA fields, using
the D-configuration, which contain the A group of the Cancer Cluster.
Sixteen Zwicky spiral galaxies in the Cancer Cluster were detected,
but no ellipticals. We corroborate the finding that spiral galaxies
with close companions tend to have enhanced radio emission. Over 200
continuum sources beyond the Cancer Cluster are tabulated. The
spectral index (relative to 610MHz) is given for many of the sources,
including some of the Zwicky galaxies. There is a suggestion for a
nonuniform number surface-density distribution of the sources, not
correlated with the Cancer Cluster. Possible predictions of such
nonuniformities, from assumptions on " super-superclusters," are
discussed.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 54 230 List of continuum sources observed in VLA fields
table3.dat 54 20 Radio sources identified with optical galaxies
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Table 1: Fied center coordinates and minimum reliably measured flux
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Field RA (1950) DE Smin (at the field center)
h min deg ' mJy
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a 08 15.2 +21 16 0.7
b 08 14.6 +20 50 0.8
c 08 17.0 +21 21 1.2
d 08 16.4 +20 55 0.9
e 08 18.8 +21 26 1.2
f 08 18.2 +21 00 1.2
g 08 20.6 +21 31 1.0
h 08 20.0 +21 05 1.6
i 08 22.4 +21 36 3.0
j 08 21.8 +21 10 2.5
k 08 24.2 +21 41 1.2
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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- 3 I3 --- VLA [1/232]+ VLA sequential source number
4 A1 --- n_VLA [*] Note on VLA source number (1)
6- 10 A5 --- Fields Field designations (see table1)
12- 15 F4.2 --- GF Gain factor (1)
16 A1 --- n_GF Appropriate field when multiple detections (2)
18- 19 I2 h RAh Right ascension (1950.0)
21- 22 I2 min RAm Right ascension (1950.0)
24- 27 F4.1 s RAs Right ascension (1950.0)
29 A1 --- DE- Declination sign
30- 31 I2 deg DEd Declination (1950.0)
33- 34 I2 arcmin DEm Declination (1950.0)
36- 37 I2 arcsec DEs Declination (1950.0)
39- 43 F5.1 mJy Scor Corrected sky flux (Scor = Smap x GF)
45- 49 F5.2 --- SI ? Spectral index between 610MHz and 1.48GHz
51- 53 I3 arcsec DMaj ? Major diameter
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Note (1): Source that is in the overlap areas between the field centers.
Note (2): For multiple detections, the smallest values of GF is given and the
appropriate field indicated in n_GF
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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- 3 I3 --- VLA VLA source number
5- 7 I3 --- Zw.119 ? Zwicky number in field 119 (Z 119 - NNN)
8 A1 --- n_Zw.119 [WE] Multiplicity index on Zw
10- 17 A8 --- Name Other name
19- 22 A4 --- MType ? Hubble type
23 A1 --- n_MType [*] *: presence of a close companion
25- 28 F4.1 mag Phmag ? Photographic magnitude
30- 33 F4.1 mJy Scor Core flux density
35- 38 F4.1 s oRA ? Optical-Radio right ascension
40- 42 I3 arcsec oDE ? Optical-Radio declination
44- 48 F5.2 10+3km/s Vres ? Recession velocity
49 A1 --- Group [ABD] Cancer group
51- 54 F4.2 mJy S60um ? IRAS flux at 60µm
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History: Prepared via OCR at CDS. Proof-read and corrections by
Heinz Andernach () on 02-Feb-1999.
(End) James Marcout, Patricia Bauer [CDS] 09-Nov-1998