منابع مشابه
Discovery of Interstellar Heavy Water
We report the discovery of doubly deuterated water (D2O, heavy water) in the interstellar medium. Using the James Clerk Maxwell Telescope and the Caltech Submillimeter Observatory 10 m telescope, we detected the 110–101 transition of para-D2O at 316.7998 GHz in both absorption and emission toward the protostellar binary system IRAS 16293 2422. Assuming that the D2O exists primarily in the warm ...
متن کاملDiscovery of Interstellar Hydrogen Fluoride
We report the first detection of interstellar hydrogen fluoride. Using the Long Wavelength Spectrometer (LWS) of the Infrared Space Observatory (ISO), we have detected the 121.6973 μm J = 2 − 1 line of HF in absorption toward the far-infrared continuum source Sagittarius B2. The detection is statistically significant at the 13σ level. On the basis of our model for the excitation of HF in Sgr B2...
متن کاملHerschel/HIFI discovery of interstellar chloronium (H2Cl+) ***
We report the first detection of chloronium, H2Cl, in the interstellar medium, using the HIFI instrument aboard the Herschel Space Observatory. The 212−101 lines of ortho-H35 2 Cl and ortho-H37 2 Cl are detected in absorption towards NGC 6334I, and the 111−000 transition of para-H35 2 Cl is detected in absorption towards NGC 6334I and Sgr B2(S). The H2Cl column densities are compared to those o...
متن کاملDiscovery of interstellar ketenyl (HCCO), a surprisingly abundant radical.
We have conducted radioastronomical observations of 9 dark clouds with the IRAM 30m telescope. We present the first identification in space of the ketenyl radical (HCCO) toward the starless core Lupus-1A and the molecular cloud L483, and the detection of the related molecules ketene (H2CCO) and acetaldehyde (CH3CHO) in these two sources and 3 additional dark clouds. We also report the detection...
متن کاملDiscovery and Characterization of the First Known Interstellar Object
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2006
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:200600015