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Galaxy Lunch - Laboratory Spectroscopy for Herschel, ALMA and the Cologne Database for Molecular Spectroscopy (CDMS) by Holger Mueller
Galaxy Lunch - Laboratory Spectroscopy for Herschel, ALMA and the Cologne Database for Molecular Spectroscopy (CDMS) by Holger Mueller
01:00-03:00 Wed 02 Jul 2008

ATNF Basement Meeting Room

 

Speaker:
Holger Mueller (University of Cologne, Germany)
Abstract:
The I. Physikalisches Institut of the Universitaet zu Koeln has a long tradition of laboratory spectroscopy in support of radio-astronomy, especially at high frequencies. The `Cologne Database for Molecular Spectroscopy' (CDMS) has been built within the past ten years. Its main part, the CDMS catalog, contains molecular line lists from the radio-frequency to the FIR regions for species that can or may be observed in the interstellar medium (ISM) or in circum-stellar envelopes (CSE). Each molecule has its own entry, and separate entries exit for different isotopic species or vibrational states. As of May 2008, 466 entries are present in the catalog; 221 of these have been detected in the ISM or in CSE and cover a fair fraction of the more than 140 molecules unambiguously detected in these media. The transition frequencies were predicted by fitting experimental data to established Hamiltonian models. The CDMS is available online (www.astro.uni-koeln.de/cdms/; short-cut to the main page: www.cdms.de). The content of the CDMS will be presented in some detail, and other sections will be mentioned briefly. Additional need for spectroscopic data, especially for ALMA, will be discussed in the context of a 3 mm molecular line survey toward the massive star-forming regions Sagittarius B2(N) and (M) carried out by the MPIfR in Bonn, Germany, with the IRAM 30 m radio-telescope.

Bring your lunch!

Contact

Kate Brooks
Kate.Brooks@csiro.au

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