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From deguchi@nro.nao.ac.jp Wed Sep 17 00:54:51 1997
Date: Wed, 17 Sep 1997 13:56:00 +0900
To: gcnews@astro.umd.edu
From: deguchi@nro.nao.ac.jp (Shuji Deguchi)
X-Sender: deguchi@nrosv1.nro.nao.ac.jp (Unverified)
Subject: Please post in GCNews


___________________________________________________________________
|     Shuji Deguchi                    Nobeyama Radio Observatory |
| deguchi@nro.nao.ac.jp                Minamimaki, Minamisaku     |
| JAOMEG::DEGUCHI                      Nagano  384-13,  JAPAN     |
| Phone: 267-98-4369 (office) 267-98-2884 (fax) (country code 81) |
___________________________________________________________________
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\vspace{1cm}
% http://www.nro.nao.ac.jp/$\sim$deguchi
\title{ Infrared Identification of SiO Maser Sources 
toward the Sgr B2 Molecular Cloud}

 %{\it X.Y. Author-1(^1) and X.Y. Author-2$^2$}
\author{ S. Deguchi(1), S. Shiki(1,2), S. Matsumoto(2), 
B. W. Jiang(3,4), Y.Nakada(5), P. Wood(6)
}

\address{
 Nobeyama Radio Observatory, National Astronomical Observatory\\
 Minamimaki, Minamisaku, Nagano 384-13, Japan
 
(2) Department of Astronomy, School of Science, 
The University of Tokyo, \\ Bunkyo, Tokyo 113, Japan

(3) Department of Astronomical Science, The Graduate University for
 Advanced Studies\\
 Nobeyama Radio Observatory, National Astronomical Observatory\\ Minamimaki,
 Minamisaku, Nagano 384-13, Japan

(4) Beijing Astronomical Observatory, Chinese Academy of Science,\\
Zhongguancum, Beijing 100080, China


(5) Kiso Observatory, Institute of Astronomy, Faculty of Science,
 University of Tokyo,\\
 Mitake, Kiso, Nagano 397-01, Japan

(6) Mt. Stromlo and Siding Spring Observatories, Private Bag, Weston 
Creek PO, Canberra, ACT, Australia
}
\begin{abstract}
J, H, and K imaging observations have been made in order 
to identify infrared 
counterparts for 6 new SiO maser sources toward the Sgr B2 molecular cloud. 
Only two of these 6 new sources were previously identified with known objects  
in other catalogues: one with an OH/IR 
object, another with an IRAS point source. With the imaging observations,
we find infrared counterparts for four of the objects: \#1, \#2, \#4, and \#7.
These are late-type stars either nearby or near to the galactic 
center. The remaining two sources of which we could not find counterparts
can be candidates of young stellar objects with SiO masers. However, it is 
highly possible that these two are late-type stars located behind the
galactic-center 
molecular cloud, suffering from very high dust extinction.
\end{abstract}
{\bf }

{\it Preprints can be obtained by}
% Here you write the e-mail adress where preprints can be obtained
{\it contacting} deguchi@nro.nao.ac.jp \\
% Here you write the URL (if any) where the paper can be obtained on the WWW
% (if relevant)

%\end{document}




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