Akademik Veri Yönetim Sistemi
5th Zermatt ISM Symposium Conditions and Impact of Star Formation: New Results with Herschel and Beyond, Zermatt, İsviçre, 19 - 24 Eylül 2010, cilt.52, ss.177-178, (Tam Metin Bildiri)
Water is a key molecule for tracing physical and chemical processes in star-forming regions. The key program "Water in starforming regions with Herschel" is observing several water transitions towards low-mass protostars with HIFI. Results regarding the 557 GHz transition of water are reported here showing that the line is surprisingly broad, and consists of several different velocity components. The bulk of the emission comes from shocks, where the abundance is increased by several orders of magnitude to similar to 10(-4). The abundance of water in the outer envelope is determined to similar to 10(-8), whereas only an upper limit of 10(-5) is derived for the inner, warm envelope.