VII/208 Faint Galaxies at the North Galactic Pole (Infante+ 1995)
Faint Galaxies at the North Galactic Pole: The Catalogue
Infante L., Pritchet C.J., Hertling G.
<J. Astron. Data 1, N°2 (1995)>
=1995JAD.....1....2I 1995JAD.....1....2I
ADC_Keywords: Galaxy catalogs ; Galaxies, photometry ; Galactic pole, north
Abstract:
The North Galactic Pole Canada-France-Hawaii Telescope Catalogue of
faint galaxies is made available. We provide positions, photometric
and structural parameters for more than 50000 galaxies. The J and F
magnitudes were obtained from IIIaJ and IIIaF CFHT prime focus plates
respectively. This catalogue have been used in many studies of faint
galaxy properties. Galaxy counts, colour distributions and clustering
properties of faint galaxies have been obtained with these data.
Statistical properties of stars have been studied as well. For details
refer to Infante and Pritchet (1992ApJS...83..237I 1992ApJS...83..237I), Pritchet and
Infante (1992ApJ...399L..35P 1992ApJ...399L..35P), Infante (1994A&A...282..353), Infante
(1994A&AS..107..413I 1994A&AS..107..413I) and Infante and Pritchet (1995ApJ...439..565I 1995ApJ...439..565I).
The magnitude errors range from:
±0.3mag at J=24 to less than ±0.1 at J=20
±0.3mag at F=23 to less than ±0.1 at F=19
The rms uncertainty in the zero points is 0.022 (J) and 0.038 (F)
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
faintgal.dat 112 60852 The Catalog of Faint Galaxies at NGP
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Byte-by-byte Description of file: faintgal.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- NGPFG [1/60852] Running number
7- 8 I2 h RAh Right Ascension 1950 (hours)
9- 10 I2 min RAm Right Ascension 1950 (minutes)
11- 15 F5.2 s RAs Right Ascension 1950 (seconds)
16 A1 --- DE- Declination 1950 (sign)
17- 18 I2 deg DEd Declination 1950 (degrees)
19- 20 I2 arcmin DEm Declination 1950 (minutes)
21- 24 F4.1 arcsec DEs Declination 1950 (seconds)
26- 30 F5.2 mag Jmag ? Magnitude from IIIaJ plate (blue)
32- 36 F5.2 mag Fmag ? Magnitude from IIIaF plate (red)
38- 42 F5.2 arcsec2 Sxx Covariance term (1)
44- 48 F5.2 arcsec2 Sxy Covariance term (1)
50- 54 F5.2 arcsec2 Syy Covariance term (1)
56- 60 F5.2 mag/arcsec2 Peak Height image above sky level
62 I1 --- Field [1/5] Area ID
64- 69 F6.2 arcsec2 A1 Areal profile at threshold T+1 (2)
71- 76 F6.2 arcsec2 A2 Areal profile at threshold T+2 (2)
78- 82 F5.2 arcsec2 A3 Areal profile at threshold T+4 (2)
84- 88 F5.2 arcsec2 A4 Areal profile at threshold T+8 (2)
90- 94 F5.2 arcsec2 A5 Areal profile at threshold T+16 (2)
96-100 F5.2 arcsec2 A6 Areal profile at threshold T+32 (2)
102-106 F5.2 arcsec2 A7 Areal profile at threshold T+64 (2)
108-112 F5.2 arcsec2 A8 Areal profile at threshold T+128 (2)
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Note (1): The intensity-weighted covariance terms are defined in the
paper; they are related to the size, eccentricity and position
angle of the galaxy by:
S = sqrt(Sxx + Syy)
e = (Syy + sqrt((Sxx-Syy)2 + 4 Syx2))/(Sxx+Syy)
tan(PA) = Sxy/((Sxx + Syy)(1+e)/2 - Syy)
Note (2): defines the area enclosed by a given isophote.
The surface brightness values of the threshold are:
----------------------
Field T(J) T(F)
(mag/arcsec2)
----------------------
1 25.84 24.38
2 25.66
3 25.06 24.60
4 25.79 24.41
5 25.69 24.58
----------------------
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History:
From JAD CD-ROM#1, directory 2
(End) Francois Ochsenbein [CDS] 16-Apr-1998