ACDS V10.0 - Thu May 09 18:20:11 CEST 2019
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Detailed Description of VII/234 :
DENIS catalog of galaxies (Paturel+, 2003)
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Note : this is the description file of the original catalog.
This HTML page corresponds well to the original description, but some minor
changes in the format may have been introduced in the FITS output
files in order to allow for arithmetic operations on quantities
such as coordinates and times. h:m:s and d:m:s units are normally
converted into degrees, and YYYY-MM-DD into julian days.
Similarly, some slight changes may have been introduced in the
units; the value given in the HTML files supersedes the value indicated in the ReadMe
file for this catalogue.
VII/234 DENIS catalog of galaxies (Paturel+, 2003)
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The provisional DENIS I-band catalog of galaxies revisited.
Paturel G., Petit C., Rousseau J., Vauglin I.
<Astron. Astrophys. 405, 1 (2003)>
=2003A&A...405....1P
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ADC_Keywords: Galaxy catalogs ; Surveys ; Photometry, infrared ; Galaxies, IR
Keywords: infrared: galaxies - catalogs - surveys
Abstract:
We present a new, extended and improved version of the provisional
I-band catalog of DENIS galaxies. Galaxies not cross-identified with
already known galaxies have been visually controlled using the DSS1
images and, occasionally, the coordinates were remeasured. The typical
accuracy of coordinates is about 2". The typical error on I-band
magnitude is about 0.2mag. The final catalog gives the most common
names, the J2000 coordinates, the I-band magnitude, the diameter, the
axis ratio and the position angle for about 43000 galaxies.
It covers roughly 67% of the southern hemisphere. It is homogeneously
sampled up to I=14.5 mag. The data are also available via the LEDA
database.
File Summary:
FileName Lrecl Records Explanations
× 80 . This file
× ReadMe 80 . This file
× catalog.dat 74 42258 Provisional DENIS I-band catalog of galaxies
See also:
http://leda.univ-lyon1.fr : LEDA Home page
B/denis : The DENIS database (Epchtein+, 1999)
J/A+AS/135/133 : First DENIS I-band extragalactic catalog (Vauglin+ 1999)
Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
1- 3 A3 --- --- [PGC]
4- 10 I7 --- PGC PGC number (LEDA database)
13- 32 A20 --- Name Alternate name taken according to a
hierarchy: NGC, IC, UGC, ESO, MCG etc...
35 A1 --- --- [J]
36- 37 I2 h RAh Right ascension (J2000) (1)
38- 39 I2 min RAm Right ascension (J2000) (1)
40- 43 F4.1 s RAs Right ascension (J2000) (1)
44 A1 --- DE- Declination sign (J2000) (1)
45- 46 I2 deg DEd Declination (J2000) (1)
47- 48 I2 arcmin DEm Declination (J2000) (1)
49- 50 I2 arcsec DEs Declination (J2000) (1)
53- 57 F5.2 mag Imag Total DENIS I-band magnitude (2)
60- 63 F4.2 [0.1arcmin] logDiam ?=9.99 Apparent diameter in log10 scale (3)
66- 69 F4.2 [-] loga/b ?=9.99 Axis ratio in log10 scale
(log of major axis to minor axis)
72- 74 I3 deg PA [0/180] Position angle in degrees,
measured from the North to the East (4)
Note (1): The standard deviation is less than 2 arcsec.
Note (2): The zero-point of these magnitude is adjusted to the
Mathewson system (Mathewson et al., 1992ApJS...81..413M)
The standard deviation is about 0.2 mag.
Note (3): This diameter is converted to the Mathewson system
(1992ApJS...81..413M) at the isophote 23 I-mag/arcsec2, using
linear log-log conversion.
Note (4): Its value covers the range 0-180°. A few values exactly
equal to zero are taken as 180°
Acknowledgements: Georges Paturel patu@obs.univ-lyon1.fr
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(End) Patrica Bauer [CDS] 07-Jan-2003