next previous
Up: The central region of


Subsections

A. The photometric catalog

Column 1. Identification of the object. It is prefixed by the acronym CGF (Catalog of Galaxies in Fornax) followed by a sequence number of the field and the sequence number of the galaxy in this field (ordered with decreasing magnitude). For example, CGF 5-12 is the 12th brightest galaxy in field 5 (see also Sect. 2.1).

Column 2. Right ascension for the epoch 2000 in hours, minutes and seconds ($\rm ^h$,$\rm ^m$,$\rm ^s$).

Column 3. Declination (2000) in degrees, minutes and seconds ($\hbox{$^\circ$},\hbox{$^\prime$},\hbox{$^{\prime\prime}$}$).

The positions of all objects were determined relative to positions in the Guide Star Catalog. Typically 4 to 8 catalog positions are found in each field. Coordinate transformations with 3 plate constants have been obtained. The positional accuracy of the calculated coordinates is in all fields better than 0.3$^{\prime\prime}$.

Column 4. Total V apparent magnitude as determined by SExtractor, see Sect. 4. Values with an appended "n" indicate that neighboring objects are present within 2 isophotal radii.

Column 5. V peak surface brightness in mag arcsec-2 as given by SExtractor (not seeing corrected).

Column 6. (V-I) colors within an aperture of $3\hbox{$^{\prime\prime}$}$ in diameter.

Column 7. Ellipticity of the galaxy and the used elliptical aperture, defined as $\epsilon =
1 - b/a$.

Column 8. Position angle of the major axis of the elliptical aperture. 0 degree is in east direction, positive angles towards the south, and negative angles towards the north direction.

Column 9. Size of the major axis of the elliptical aperture in arcsec. Note that the limiting isophote of the ellipse slightly varies from field to field depending on the seeing and sky brightness.

Column 10. Size of the major axis at an isophotal surface brightness of $\mu_V = 26$ mag in arcsec, D26.

Column 11. Effective semi-major axis $a_{\rm eff}$ in arcsec. Major axis containing half of the total light measured in elliptical apertures.

Column 12. Effective surface brightness $\mu_{\rm eff}$, mean surface brightness within the effective semi-major axis.

A.1. Crossreferences to other catalogs

Some of our galaxies are also listed in previous catalogs. Table 4 gives cross references for these galaxies. The abbreviations are as follows: C87 = Caldwell (1987), F89 = Ferguson (1989, Fornax Cluster Catalog), D88&I90 = Davies et al. (1988) and Irwin et al. (1990).


  
Table 4: Cross references to other catalogs

\begin{tabular}
{llllll}
\hline\noalign{\smallskip}
 & NGC & C87 & F89 & D88\&I9...
 ... B1571 & \\ CGF~10-13 & & & FCC272 & \\ \noalign{\smallskip}
\hline\end{tabular}


next previous
Up: The central region of

Copyright The European Southern Observatory (ESO)