Stringent upper limits to the solid NH$\mathsf{_3}$ abundance towards W 33A from near-IR spectroscopy with the Very Large Telescope

Publisher： Edp Sciences

E-ISSN： 1432-0746|399|1|169-175

ISSN： 0004-6361

Source： Astronomy & Astrophysics, Vol.399, Iss.1, 2003-02, pp. : 169-175

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