J/MNRAS/296/839 Phoenix Deep Survey: 1.4-GHz source counts (Hopkins+, 1998)
The Phoenix Deep Survey: 1.4-GHz source counts
Hopkins A.M., Mobasher, B. Cram, L., Rowan-Robinson, M.
<Mon. Not. R. Astron. Soc. 296, 839 (1998)>
=1998MNRAS.296..839H 1998MNRAS.296..839H
ADC_Keywords: Surveys ; Radio sources
Keywords: surveys - galaxies: evolution - galaxies: luminosity function,
mass function - radio continuum: galaxies
Abstract:
We present the first results from the Phoenix Deep Survey, a
multiwavelength survey of a 2 deg diameter region. Observations in the
radio continuum at 1.4 GHz carried out with the Australia Telescope
Compact Array are described. The catalogue of over 1000 radio sources
compiled from these observations is analyzed, and the source counts
are presented. We model the observational source counts using a
two-population model and published luminosity functions for these
populations. Upon invoking luminosity and density evolution, we find
that a luminosity evolution model best fits the radio observations,
consistent with earlier work. The redshift distribution of the two
galaxy populations investigated is also modeled and discussed.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
pdf.dat 129 1079 Phoenix Deep Field Data
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See also:
1999ApJ...519L..59H 1999ApJ...519L..59H : Microjansky Sources at 1.4 GHZ
http://www.physics.usyd.edu.au/~ahopkins/cats/ : Phoenix Multiwavelength Deep
Survey Catalog
Byte-by-byte Description of file: pdf.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Num *Catalogue number
6- 7 I2 h RAh 1.4 GHz right ascension J2000.0
8- 9 I2 min RAm 1.4 GHz right ascension J2000.0
10- 15 F6.3 s RAs 1.4 GHz right ascension J2000.0
17 A1 --- DE- 1.4 GHz declination sign J2000.0
18- 19 I2 deg DEd 1.4 GHz declination (degrees) J2000.0
20- 21 I2 arcmin DEm 1.4 GHz declination (minutes) J2000.0
22- 26 F5.2 arcsec DEs 1.4 GHz declination (seconds) J2000.0
28- 31 F4.1 arcsec Bmaj *Major axes of the radio source
33- 36 F4.1 arcsec Bmin *Minor axes of the radio source
38- 42 F5.1 arcsec Pa *Position angle of the radio source
44- 50 F7.3 mJy Rflux 1.4GHz Radio source flux density
52- 53 I2 h RArh *? R-band Right ascension J2000.0
54- 55 I2 min RArm *? R-band Right ascension J2000.0
56- 60 F5.2 s RArs *? R-band Right ascension J2000.0
62 A1 --- DEr- *? R-band Declination sign J2000.0
63- 64 I2 deg DErd *? R-band Declination (degrees) J2000.0
65- 66 I2 arcmin DErm *? R-band Declination (minutes) J2000.0
67- 70 F4.1 arcsec DErs *? R-band Declination (seconds) J2000.0
72- 77 F6.3 mag Rmag *? R magnitude
79- 84 F6.3 mag Vmag *? V magnitude
86- 90 F5.2 mag Bmag *? B magnitude
92- 95 F4.1 mag Hmag *? H magnitude
97-102 F6.3 mag Kmag *? K magnitude
104 A1 --- F2C * [sgf] Focas2 Class
106-110 F5.3 --- Frac ? Fractional chance that the optical
counterpart has been mis-identified
112-116 F5.3 arcsec Dist ? Distance between the radio and optical
source positions
118-122 F5.3 --- z *? Redshift
124 I1 --- q_z *? [123] Reliability of the redshift
126-127 A2 --- SpClass *Spectral class
129 I1 --- Field * [123] where the source was identified
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Note on Num: Objects are numbered in order of increasing 1.4 GHz right
ascension.
Note on Bmaj, Bmin, Pa: (convolved with the beam size - which is about 8x10
arcsec (in the RAxDec sense) for objects from field 1 (see "field" below)
and about 5.5x6.5 arcsec for others).
Note on RArh, RArm, RArs, DEr-, DErd, DErm, DErs: Position of the optical
counterpart to the radio source, again in J2000.
Note on Rmag, Vmag, Bmag, Hmag, Kmag: The apparent brightness in the
respective optical or near-infrared wavelength band. The B-band magnitudes
come from the COSMOS database, the rest from observations made specifically
for this survey.
Note on F2C:
s= object has been identified as a star
g= galaxy
f= too faint to be distinguished by the classifier
Note on z: The spectrally identified (geocentric) redshift of the optical
galaxy. accuracy ±0.001
Note on q_z: Based on the quality of detected lines in the spectrum.
1: indicates very reliable (redshift based on two or more well-identified
lines)
2: indicates less reliable (redshift based on one line only, or on two less
certain lines)
3: indicates unreliable (redshift based on lines or features which are
uncertain)
Note on SpClass: This is simply to distinguish between starburst and
AGN type galaxies.
Class A: Blue continuum with strong emission lines
Class AB: H-alpha present but H-beta only in noise, weaker emission line
objects
Class B: Red continuum, moderate to strong H-alpha
Class C: Red continuum, absorption lines only
Class D: QSO (Broad emission line object at high redshift)
Note on Field:
1: the 2 degree diameter mosaic (PDF)
2: the smaller, deeper observations (PDFS) only
3: in both
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History:
Originally retrieved from
http://www.physics.usyd.edu.au/~ahopkins/cats/ on 10-Jun-98; H. Andernach
corrected two midID chances from 9.999 to 0.000 on 15-Jun-98. ADC obtained
a copy of the corrected version from the CATS Database in July 1998.
(End) Gail L. Schneider [SSDOO/ADC] 29-Sep-2000