Sensitive CO and13CO survey of water fountain stars
نویسندگان
چکیده
منابع مشابه
First detection of CO lines in a water fountain star
Context. Water fountain stars are very young post-AGB stars with high velocity water maser jets. They are the best objects to study the onset of bipolar jets from evolved stars due to their young dynamical ages. However, none of them have been observed in any thermal lines. Aims. Search for CO lines in the water fountain star IRAS 16342-3814 and investigate the properties of its thermal gas. Me...
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A double pipette system for local, controlled drug infusion is presented. Two concentric pipettes can be manipulated separately and pressurized independently by a designated double holder. The inner pipette is loaded with the desirable solution (drug), and functions as a source, while the outer one is a sink. This gives a flow of the solution between the two pipettes that protrudes only a small...
متن کاملobservations of the “ water fountain ” IRAS 16552 − 3050
We present Very Large Array (VLA) observations of the water maser emission towards IRAS 16552-3050. The maser emission shows a velocity spread of ≃ 170 km s, and a bipolar distribution with a separation between the red and blueshifted groups of≃ 0.08. These observations and the likely post-AGB nature of the source indicate that IRAS 16552-3050 can be considered as a member of the “water fountai...
متن کاملDetermination of arsenic concentration and physiochemical characteristics of water samples from Babagorgor fountain
Since Babagorgorfountain in the Ghorveh city of Kurdistan province is located in the arsenic belt of Iran, to raise awareness about the quality of drinking water from this fountain the concentration of arsenic and other heavy metals as well as other physicochemical parameters were investigated to protect the public health. In this study, water samples were collected from Babagorgorfountain. Ars...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2013
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201322187