Laboratory Microwave Spectroscopy of Interstellar Molecules
نویسندگان
چکیده
منابع مشابه
Prebiotic molecules in interstellar space: rotational spectroscopy and quantum chemistry
One of the most important open issues in astrochemistry and astrobiology is the detection in space of complex organic molecules, in particular those having a strong prebiotic role (i.e., related to the formation of biomolecule building blocks), and the identification of the chemical routes for their production. By means of selected examples, the role of rotational spectroscopy and quantum chemi...
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1.25 Over the past 40 years, about 140 distinct molecular species have been detected in a wide range of astronomical locations (see http://www.cv.nrao.edu/~awootten/ allmols.html). We now know that molecules are present within our galaxy in the atmospheres of cool stars, in stellar envelopes, in planetary nebulae, in the ejecta of novae and supernovae, in diffuse and dense clouds in the interst...
متن کاملCharacterization of Interstellar Organic Molecules
Understanding the origins of life has been one of the greatest dreams throughout history. It is now known that star-forming regions contain complex organic molecules, known as Polycyclic Aromatic Hydrocarbons (PAHs), each of which has particular infrared spectral characteristics. By understanding which PAH species are found in specific star-forming regions, we can better understand the biochemi...
متن کاملZeeman splitting in interstellar molecules
The Zeeman splitting that a longitudinal magnetic field would produce on the ethynyl radical is calculated for the transitions typical of those observed in the interstellar clouds. It turns out that the ubiquitous CCH radical adds to the list of the few interstellar molecules that could be used to determine magnetic fields in molecular clouds.
متن کاملConstraints on the abundances of various molecules in interstellar ice: laboratory studies and astrophysical implications
Ethane, acetylene, ethanol, hydrazine and hydrogen peroxyde are either predicted by theoretical models to be abundant in the icy mantles on grains in dense clouds, or were found to be produced by comets. We present measurements of the spectra of these species embedded in astrophysically relevant ice matrices. Additionally, we obtained the spectrum of the hydrozonium ion (N2H 5) which could be p...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1987
ISSN: 0074-1809
DOI: 10.1017/s0074180900095085