The results of tests run on the prototype digital filter printed circuit card intended for the ALMA correlator are presented. Passband performance of the filter for all ALMA modes, as well as stop band operation for selected modes, is documented.

We investigate the possibility of mapping large-scale anti-cyclonic vortices, resulting from a global baroclinic instability, as pre-cursors of planet formation in proto-planetary disks with the planned Atacama Large Millimeter Array (ALMA). On the basis of three-dimensional radiative transfer simulations, images of a hydrodynamically calculated disk are derived which provide the basis for the ...

The Atacama Large Millimeter Array ALMA is a large inter national telescope project which will be built over the next decade in northern Chile on a site at km elevation The site provides excellent atmospheric trans mission in the millimeter and sub millimeter wavelength ranges The project consists of two parts the m Array composed of sixty four meter antennas that can be placed on di erent stat...

To be a debugger is a good thing! Since the very beginning of the programming activity, debuggers are the most important and widely used tools after editors and compilers; we completely recognize their importance for software development and testing. Debuggers work at machine level, after the compilation of the source program; they deal with assembly, or binary-code, and are mainly data structu...

Since ALMA instrument will have low noise receivers with very large instantaneous bandwidth, gain stability should be carefully specified to avoid limiting the sensitivity of the total system. This memorandum reviews the methods for the characterization of gain stability in the time and frequency domain and presents examples of experimental setups used for its measurement in the case of cryogen...

We address in this white paper the ability of ALMA to observe extrasolar planetary systems (in various stages of formation). The observation of extrasolar planetary systems is thought to be one of the most important science drivers for ALMA. As such, we should have some idea of what the capabilities might be in this regard.

We present results on the dust attenuation of galaxies at redshift ∼ 3 − 6 by studying the relationship between the UV spectral slope (βUV) and the infrared excess (IRX; LIR/LUV) using ALMA far-infrared continuum observations. Our study is based on a sample of 67 massive, star-forming galaxies with a median mass of M∗∼ 10 10.7 M⊙ spanning a redshift range z = 2.6−3.7 (median z = 3.2) that were ...

Dipartimento di Chimica "G. Ciamician" Alma Mater Studiorum-University of Bologna, Italy ( A.R., C:C:, S.S.), Dipartimento di Chimica e Tecnologia del Farmaco, Università degli Studi di Perugia, Italy (R.P., A.G.), Dipartimento di Scienze Mediche e Chirurgiche, Alma Mater Studiorum-University of Bologna, Italy (F.N., M.M.), TES Pharma S.r.l., Via P. Togliatti, 20, Loc Taverne, 06073 Corciano, I...

a Department of Biology, Alma College, Alma, MI, U.S.A. b Department of Biology, Florida Southern College, Lakeland, FL, U.S.A. c Department of Biological Sciences, Macquarie University, Sydney, NSW, Australia d Evolution and Ecology Research Centre, University of New South Wales, Kensington, NSW, Australia e School of Biological, Earth and Environmental Sciences, University of New South Wales,...

In order to perform fast switching phase calibration effectively, we need to have a database of bright point-like sources at millimeter wavelengths. Optimally, this would include flux measurements at 86 GHz and spectral information at higher frequencies. We present a sample of 31145 compact flat spectrum radio sources with −40 < δ < +60, presumed extragalactic, which will be likely candidates f...