... galaxies

Full Tables 1 and 2 are available in electronic form at http://www.edpsciences.org

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...

Full Table 5 is available in electronic form at CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?/A+A/412/45

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... (LEDA)

Originally the database was called Lyon-Meudon Extragalactic Database. After its incorporation into the DENIS project that already was managing the SODA and LODA databases, it was decided to rename it LEDA.

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... galaxies

It is important to recall that no perfect catalog exists when the nature is estimated from morphology alone. Further, the present catalog cannot be strictly magnitude limited because one can miss very low surface brightness or very compact galaxies.

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... coordinates

A flag for coordinates improved to better than about 10 arcsec was stored in LEDA.

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... classes

Also designated as "dataset" in HYPERLEDA.

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... code

$$\partial \log D / \partial B = \left \lbrace \begin{array}{l... ....016~T & \mbox{for early types ($T < 0$ )}. \end{array}\right.$$ (2)

A rough value is $\partial \log D / \partial B \approx 0.1$ ${\rm mag}^{-1}$.

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... homogenization

In fact, the position angle may vary with the limiting surface brightness of the diameter system, but one cannot predict in which sense it will change because it depends on the absolute orientation of the galaxy.

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... each

In HYPERLEDA a principal name is chosen according to a short hierarchy: NGC, IC, UGC, ESO, PGC. Besides, some galactic objects are also available: stars, stellar clusters, nebulae etc.

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... galaxies

Stars, star clusters and galactic nebulae managed also by HYPERLEDA, will not receive a PGC name, but the corresponding number will be used anyway as an internal pointer.

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