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Votre ref.: MC/CB 92.401\\

{\Large {\bf Near--infrared photometry of a sample of IRAS Point Sources(*)}}\\

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{\large P. Fouqu\'e$^{1,2}$, T. Le Bertre$^{1}$, N. Epchtein$^{1}$, 
F. Guglielmo$^{1}$, F. Kerschbaum$^{3}$\\}

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$^{1}$ Observatoire de Paris,\\
F--92195 Meudon Principal Cedex, France\\

$^{2}$ Pontifica Universidad Catolica, \\
Casilla 104, Santiago 22, Chile\\

$^{3}$ Institut f\"{u}r Astronomie, Universit\"{a}t Wien,\\
T\"{u}rkenschanzstra\ss{}e 17, A-1180 Wien, Austria\\

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{\large Astronomy and Astrophysics, Supplement Series {\bf 93}, 151--171\\}

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{\large \bf Abstract}. \\

This paper presents the J, H, K, L, M photometry of 516 sources pertaining to a 
sample of 787 sources which has been extracted from the IRAS Point Source 
Catalogue in order to study the late stages of stellar evolution and the 
concomitant phenomena of mass loss.\\

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Three different classifications of these sources based on broad-band photometry 
and IRAS low resolution spectra are given, and the distributions of 
the sources in terms of these classifications are presented. A sub-sample 
of peculiar sources, believed to have recently undergone a helium flash, 
has been isolated using the K -- L, [12 $\mu$m] -- [25 $\mu$m] colour 
diagram. Some objects worth further studies are also mentioned.\\

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{\large \bf Key words}: Stars: carbon -- Stars: circumstellar matter -- 
Stars: evolution of -- Stars: mass loss\\

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{\large {\bf Description of the file}}\\

The results are given for the 516 sources that we have observed 
from La Silla (452 in the southern hemisphere, plus 64 in the range 
0$^{\circ}<\delta<20^{\circ}$). For each source, the IRAS name is given 
followed by the epoch of observation (E, with the convention given in Table 1), 
the J, H, K, L', M magnitudes that we have obtained, then three classifications 
based on IRAS Low Resolution Spectra (LRS), IRAS broad-band photometry (VH) and 
the combination of IRAS broad-band photometry with our near-infrared photometry 
(Val), and, finally, one association.\\

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{\large {\bf References}}\\

{\bf LRS:}\\
IRAS Science Team : 1986, A{\&}ASS 65, 607\\
Volk K., Cohen M.: 1989, AJ 98, 931\\

{\bf Val:}\\
Epchtein N., Le Bertre T., L\'epine J.R.D., Marqu\`es dos Santos P., 
Matsuura O.T., Picazzio E.: 1987, A{\&}ASS 71, 39\\

{\bf VH:}\\
van der Veen W., Habing H.J.: 1988, A{\&}A 194, 125\\

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{\large {\bf Table 1} : Journal of observations}\\

\begin{tabular}{|l|c|}
\hline
 & \\
Epoch & label in \\
 & column E\\
\hline
 & \\
13-07-89 to 20-07-89 &  1\\
10-08-89 to 16-08-89 &  2\\
08-09-89 to 17-09-89 &  3\\
12-06-90 to 14-06-90 &  4\\
01-07-90 to 05-07-90 &  5\\
25-04-91 to 03-05-91 & 10\\
\hline
\end{tabular}

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