\cgidef{-tex -oglu
\AandA	{{\em Astronomy \& Astrophysics}}
\tot 7952
\ftp 7289
\viz 6913
#counts{total}{FTP}{vizier}
}
\title{Astronomer's Bazaar}
\CDShead{Astronomer's Bazaar}{Bazaar.logo}

\begin{center}
\LARGE \fg{DarkGreen} The CDS Service for astronomical Catalogues
\end{center}

\thickrule

\iffalse
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%	Note added 29 sep
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{quote}\em\fg{DarkGreen}
Following a recent change of computer (29 September 2005), 
it could happen that some of the catalog services are not
working properly. If you find any problem, please drop at
mail to
\A{mailto:question@simbad.u-strasbg.fr?Subject=Problem on Catalog Service"}
{question(at)simbad.u-strasbg.fr}
\end{quote}
\hr
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\fi

The \glutag{CDS.home|Strasbourg astronomical Data Center} (CDS) 
collects and distributes astronomical data catalogues,
related to observations of stars and galaxies, and other galactic
and extragalactic objects. Catalogues about the solar system bodies 
and atomic data are also included.

\iffalse %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\hr\par
\begin{glossary}
\fg{coral3}\bf
\term{08 Feb 2000:
The \A{/viz-bin/Cat?I/259}{Tycho-2 Catalogue} is now accessible }
{\em(Hipparcos was launched exactly 10.5 years ago...)}
%The {\fg{black}\underline{Tycho-2}} catalogue now accessible
\end{glossary}
%\hr\par
%{\em{\fg{coral3} {\bf NEW}: the standardized catalogue documentation (the
%{\tt ReadMe} files) can be converted into FORTRAN code.}}
\par\hr
\fi %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

The catalogues and tables managed by CDS can be summarized as follows:
\begin{itemize}
\item {\tot} Catalogues available from CDS ...  
\item ... of which  {\ftp} are available on-line (as full ASCII or FITS files) ...
\item ... of which  {\viz} are also available through the VizieR browser.
\end{itemize}

\subsection{\label{Query}{Accessing the catalogues}}
The present interface gives access to the three categories and
directs the user to the best way to retrieve the catalogued data: 
\begin{enumerate}
\begin{FORM method=GET action="/viz-bin/qcat"}
\item {\bf Query the list of catalogues}: \par
    Enter keywords, author names,  or catalogue number  
    and get access to the summary descriptions of the matching catalogues: \\
    \tag{input type="reset"  value=" Reset "}
    \tag{input name=isindex size=30} 
    \tag{input type="submit" value=" Submit "}
    \end{FORM}
\item \A{/cats/cats.html}{Browse the list of catalogues},
	ordered by decreasing catalogue number,
	and get access to summary descriptions of each individual catalogue.

\item {\bf\A{/viz-bin/VizieR}{VizieR}},
\iffalse
    the CDS/ESRIN service for astronomical catalogues, is 
    the result of a joint effort of 
    \glutag{CDS.home} (Centre de Donn\'ees astronomiques de Strasbourg) and
    \A{http://www.esrin.esa.it}{ESA-ESRIN} (Information Systems Division)
    in order to provide the astronomical
    community with a dedicated tool for retrieving astronomical data listed in
    published catalogues and tables, by the means of a relational
    database management system.
    When the catalogue is available under the {\bf VizieR} system, the
    result pages include an anchor to the system.
\else
    the service to access this large diversity of astronomical catalogues
    through a unified interface and a common system of {\em metadata}.
\fi
\end{enumerate}

{\bf\fg{DarkGreen} Notes:}
\begin{itemize}

\item Some of  the catalogues are {\em not (yet) available on-line}. 
	These ones should be requested by electronic mail to:
	{\bf\glutag{question Cats:missing cats@simbad.u-strasbg.fr}}
\item A list of \A{ftp://cdsarc.u-strasbg.fr/pub/cats/cats.new}{new catalogues and tables}
	put on-line or modified in the last month is also available.

\iffalse
\item The FTP service allows {\bf\fg{DarkGreen} file transformations}:
	files can be {\bf\fg{DarkGreen} compressed} or 
	{\bf\fg{DarkGreen} uncompressed} by adding or removing the
	{\bf\tt.gz} or {\bf\tt.Z} suffix to file names, 
	can be converted to {\bf\fg{DarkGreen} FITS tables, possibly gzipped}
	by adding the {\bf\tt.fit} or {\bf\tt.fit.gz} suffix to file names;
	catalogues can be copied as {\bf\fg{DarkGreen} tar files,
	possibly gzipped} by adding the {\bf\tt.tar} or
	{\bf\tt.tar.gz} suffix; see details in the description of the
	\A{http://cdsweb.u-strasbg.fr/doc/ftp.htx}{FTP Facilities at CDS}.

\item The list of catalogues can also be visualized as a (big)
	{\tt\A{ftp://cdsarc.u-strasbg.fr/pub/cats/cats.dvi}{dvi file}},
	with a presentation similar to the one used in 
	%the CDS Information Bulletin
	%({\em this calls {\tt\bf xdvi} on the user's side and does not
	%provide hyperlinks}).

\item Thanks to all the contributing institutes and individual colleagues
	who help us populating this collection of catalogues,
	the same catalogues are also made available at the collaborating
	data centers: 
	\A{http://adc.gsfc.nasa.gov}{NASA/ADC}, 
	\A{http://adac.mtk.nao.ac.jp}{Tokyo (ADAC)},
	\A{http://www.inasan.rssi.ru}{Moscow (INASAN)}, 
	\A{http://www.iucaa.ernet.in}{Pune (India)},
	\A{http://www.bao.ac.cn}{Beijing},
	and La Plata (Argentina).
	%{\fg{Blue} NASA/ADC, Moscow, Beijing, La Plata, Pune, Tokyo.}
\fi
\end{itemize}
\hr

\subsection{\label{A+A}Tables from {\AandA} and other major journals}

Since January 1993, {\A{/cats/J.htx}{Tables from articles}
published in {\AandA} are prepared by and made available
at CDS, by agreement with the Editor.  
Tables from the AAS CD-ROMs are made available on-line at CDS by agreement 
with the AAS.
Tables from other major journals are also available. \\
This service is  similar to the one existing for catalogues.

The \Aref{Query}{query mode by keyword and author's name}
for catalogues covers both catalogues and journal tables.
\hr

\subsection{CDS standards for catalogues}

Most of the CDS catalogues are available on-line,
and have standard documentation and format, following the 
\glutag{catstd.doc}.

Information on recently published catalogues and datasets can be 
found in the regular issues of the CDS Information Bulletin 
{\em(\A{/Bull.html}{Bulletin d'Information du CDS})}

These catalogues and datasets are currently distributed
on magnetic tape,
 diskettes, CD-ROMs, or via network.
\hr

\subsection{\label{YourCat}Making your catalogue available for distribution}

Scientists producing new datasets or astronomical catalogues
are encouraged to make their computer-readable material
and documentation available for distribution
to the worldwide astronomical community, by depositing
a copy in one of the
international astronomical data centers.

%\A{submit.htx}{How to prepare a catalogue} for a rapid insertion 
%into the data center archives
For a rapid insertion into the data center archives and into the 
\A{/viz-bin/VizieR}{VizieR} facility, the authors are advised to
have a look at the \A{/doc/submit.htx}{guidelines for the preparation and submission}
of catalogues. For any question or problem, 
please contact the CDS specialists at the
following e-mail address: 
{\bf\glutag{question Cats:missing cats@simbad.u-strasbg.fr}}

\hr

\subsection{\label{Dic}Dictionary of Nomenclature of Celestial Objects.}

The CDS offers an interactive access to the current on-line version of the 
\glutag{Dic.home}, now maintained by CDS, as
part of an effort coordinated by IAU Commission 5. \\
This information is also available in SIMBAD, through the 
{\tt\bf info} commands.

\hr

\subsection{\label{CS}Client/server routines for catalog queries}

A set of \A{/doc/cdsclient.html}{client/server routines}
allows to send remote queries concerning
the CDS collection of astronomical catalogues.
This includes:
\begin{itemize}
\item keyword queries of the CDS/ADC list of Catalogues;
\item {\tt ftp} transfer of selected files, and
\item choice of different transfer formats (ASCII, FITS, tar, compressed).
\end{itemize}

These routines can be installed on your local Unix workstation.

\hr

{\em Last update: 27-May-1997}

\CDStail{\thefile}