... Study of Mg-Fe-silicate glasses of variable composition. ... With the new data, the astrophysical discussion started in Paper I was continued and focussed on the comparison of the olivine glass data with IRAS LRS spectra of O-rich circumstellar envelopes around Mira stars. ... The new olivine glasses point to the interesting consequence that the temperature for silicate dust grains at the inner edge of circumstellar envelopes must be considerably higher than the values often given in the literature....

Find Similar Abstracts . ... Intergalactic gas in galactic clusters, the microwave background radiation and cosmology . ... The types of information that can be obtained from astrophysical studies of the microwave background in the direction of galactic clusters and from radio observations of clusters are examined. ... Use: Authors Title Abstract Text Text Query with Keywords Return: Query Results Query Form Database: Astronomy Instrumentation Physics and Geophysics ABSTRACT QUERY USER FEEDBACK HELP ...

We have searched for infrared excesses around a well-defined sample of 69 FGK main-sequence field stars. ... We have detected 70 ЮМm excesses around seven stars at the 3 Я? confidence level. ... This trend in the disk luminosity distribution is consistent with the estimated dust in our solar system being within an order of magnitude greater or less than the typical level around similar nearby stars. ...

... Dust in the region is studied photometrically at ultraviolet, optical, and far-infrared wavelengths to analyze nebular colors, grain properties, and scattering geometry. Constraints on this geometry are provided by spectroscopy of radio emission lines and optical absorption lines of the interstellar gas, which also reveal a significant amount of fine-scale filamentary structure. ... Return to Thesis Page ...

... 1) Dipartimento di Astronomia e Scienza dello Spazio, Universit? di Firenze, Largo E. Fermi, 5, I-50125 Firenze, Italy . ... We present the results of new near-infrared observations of the fields around a sample of 19 Herbig Ae/Be stars. ... We find a clear dependence of the richness of the cluster on the spectral type of the Herbig Ae/Be star, confirming that the mode of formation of intermediate-mass stars represents the transition between the high-mass and the low-mass modes. ...

Our publications in 2001 year Kniazev, A. Y.; Engels, D.; Pustilnik, S. A.; Ugryumov, A. V.; Kniazeva, T. F.; Pramsky, A. G.; Brosch, N.; Hagen, H.-J.; Hopp, U.; Izotov, Y. I.; Lipovetsky, V. A.; Masegosa, J.; Marquez, I.; Martin, J.-M. Astronomy and Astrophysics, v.366, p.771-787 (02/2001) . ... Pustilnik, S.; Kniazev, A.; Lipovetsky, V.; Ugryumov, A. Astronomische Gesellschaft Abstract Series, Vol. ... N.; Soboleva, N. S.; Temirova, A. V. Astronomische Gesellschaft Abstract Series, Vol. ...

Scientific results of the work of Laboratory of Radio Spectroscopy : . In presented messages outlined the results of scientific researches conducted by the stuft of LRS. ... Interaction of the Supernova Remnant S 147 with the Ambient Interstellar Gas . ... The spatial power spectra of galactic neutral hydrogen at high galactic latitudes . Properties of the interstellar gas clouds . ... Scaling relations and intrinsic motions in the interstellar neutral hydrogen clouds . ...

Proceedings of the Particle Physics and Early Universe Conference (PPEUC). ... TESRE, Consiglio Nazionale delle Ricerche, Via Gobetti 101, 40129 Bologna, Italy . Dip. Fisica, Universit? di Roma TRE, Roma, Italy . ... Observations will take advantage of the exceptional dryness and stability of the atmosphere on the high Antarctic Plateau, at Dome C. The first run of observations was performed in December 96 -- January 97 at the Italian-French site, Concordia, at Dome C (Antarctica). ...

... Even future mission archives tend to concentrate more on what can be extracted out of a proposal or a Guaranteed Time Observation log than the actual extracted science out of the data itself. ... A year later the data is then publicly available. An archive researcher has then to go through a mass of data to find what may be useful without any indication as to what the actual observer's results were while using the data except the proposal, which in most cases is very general. ...

... International Journal of Bifurcations and Chaos , 1998, vol. ... Impulsive synchronization of chaotic dynamic systems has some important applications to chaotic secure communication and chaotic spread-spectrum communication systems. In this paper we present some experimental results on impulsive synchronization between two Chua's circuits. ... The robustness of impulsive synchronization with respect to variations in the frequency and the width of impulses is studied. ...

NGC 3256 B, NGC 3256 C . Jayanne English (Queen's University), B?rbel Koribalski (ATNF), Claudia McCain (MSSSO), Ken Freeman (MSSSO), et al. ... Here we present preliminary results of a study of the neutral hydrogen gas (HI) in the southern galaxy NGC 3256 and its environment with the Australia Telescope Compact Array . The galaxy NGC~3256 has been studied extensively by Jayanne English in her PhD thesis at Mount Stromlo and Siding Spring Observatory (MSSSO). ...

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