The NH2D/NH3 ratio toward pre-protostellar cores around the UC$\ion{H}{ii}$ region in IRAS 20293+3952*

Author： Busquet G.   Palau A.   Estalella R.   Girart J. M.   Sánchez-Monge Á.   Viti S.   Ho P. T. P.   Zhang Q.  

Publisher： Edp Sciences

E-ISSN： 1432-0746|517|issue|L6-L6

ISSN： 0004-6361

Source： Astronomy & Astrophysics, Vol.517, Iss.issue, 2010-08, pp. : L6-L6

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