Internal Dynamics, Structure and Formation of Dwarf Elliptical Galaxies: I. A Keck/HST Study of Six Virgo Cluster Dwarfs . ... The mean line-of-sight velocity and velocity dispersion are resolved as a function of radius along the major axis of each galaxy, nearly doubling the total number of dEs with spatially-resolved stellar kinematics. ... Such limits place strong constraints on dE galaxy formation models. ...

... We present high angular resolution millimeter wavelength continuum and 13CO(2-1) observations of the circumstellar disk surrounding the TTauri star DG Tauri. We show that the velocity pattern in the inner regions of the disk is consistent with Keplerian rotation about a central 0.67 Msun star. The disk rotation is also consistent with the toroidal velocity pattern in the initial channel of the optical jet, as inferred from HST spectra of the first de-projected 100 AU from the source. ...

... VOLUME***, **YEAR OF PUBLICATION** **NAMES OF EDITORS** H i Rotation of Dwarf Galaxies with Unusually High H i Mass­to­Light Ratios Bradley E. Warren & Helmut Jerjen Research School of Astronomy and Astrophysics, Australian National University, Mount Stromlo Observatory, Cotter Road, Weston ACT 2611, Australia BЁarbel S. Koribalski Australia Telescope National Facility, CSIRO, PO Box 76, Epping NSW 1710, Australia Abstract. ... The cross marks the dynamical centre of the galaxy. ...

... I present results from several seasons of photometric observations of X--ray sources in the Orion OB1a and OB1b star formation regions. The initial goal was to measure the rotational periods of several dozen pre--main sequence (PMS) stars. ... Infrared and optical data confirm that 90% of the X--ray sources are PMS and about 10% of the PMS stars may have disks. ... I find rotation periods for five stars at confidence of greater than 99.9/ greater than 99/ at much lower confidence. ...

... The distributions of orbits eccenttricities and of angular momenta for the halo stars and the old disk population are considered. The distributions have gaps separating the halo from the disk and dividing the halo population into three groups. ... Рассмотрены распределения звезд гало и старого населения диска по величине эксцентриситета орбит и угового момента. Распределения имеют провалы, отделяющие гало от диска и делящие населения гало на три группы. ...

... Science . ... Science Users Information > Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Optical interferometric imaging of rapidly rotating stars . ... ESO HST Image Galleries . ... Rapidly rotating stars display an uneven surface brightness profile due to gravity darkening. ... Data of the rapidly rotating star Altair is available from the Navy Prototype Optical Interferometer and could be used to derive an image of the surface using the new imaging algorithm...

Find Similar Abstracts . ... 26, Jan. 1983, p. 77-83. ... CAUSTICS (OPTICS), COSMOLOGY, PARTICLE MOTION, GEOMETRICAL OPTICS, GRAVITATIONAL EFFECTS, UNIVERSE . ... The analogy between caustics in geometrical optics and the singularities that arise in irrotational flows in a cold collisionless medium is discussed. ... 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 ...

... AAS link ] . ... Our internal perspective makes it difficult to determine the spiral structure of our own galaxy. ... H I absorption, on the other hand, traces colder, denser gas that should be more confined in discrete clouds and perhaps discrete spiral arms. In addition, H I self-absorption (HISA) requires background H I emission at the same velocity as the foreground absorbing gas, thus introducing a much-needed constraint on the large-scale sightline geometry and kinematics. ...

... Abstract . ... I.V. Holin (Space Research Institute of RAS (IKI)) . ... Space Research Institute of Russian Academy of Science (IKI)) . ... Skulachev, Dmitri P. (Space Research Institute of RAS (IKI)) . ... Elena Gavryuseva (National Institute of Astrophysics and Space Physics, Florence , Italy and Institute of Nuclear Research of RAN) . ... Dmitri Vainchtein (Space Research Institute of Russian Academy of Sciences) . ... Elena Surovyatkina (Space Research Institute of Russian Academy of Sciences) ....

... Authors: Spyros Basilakos (Imperial College London) . ... Title: Populating a cluster of galaxies - I. Results at z=0 . ... Title: The Merger Rate to Redshift One from Kinematic Pairs: Caltech Faint Galaxy Redshift Survey XI . ... Title: Multi-wavelength observations of an evolved galaxy group: An endpoint of galaxy merging? ... 23 matches for the search pattern galaxy merging . The URL for this page is: http://xxx.itep.ru/find/astro-ph/1/galaxy+merging/0/1/0/past,all/0/0 www-admin@xxx.lanl.gov ...

... Interacting galaxies . ... Catalogues . ... We define a volume limited sample of over 14,000 early-type galaxies (ETGs) selected from data release six of the Sloan Digital Sky Survey. The density of environment of each galaxy is robustly measured. By comparing narrow band spectral line indices with recent models of simple stellar populations (SSPs) we investigate trends in the star formation history as a function of galaxy mass (velocity dispersion), density of environment and galactic radius. ...

... Recent developments in the application of the theory of line formation, joined to the increased sensitivity of instrumental techniques, augmented the number of observable quantities related to the magnetic fields of such a class of stars. ... Through the formalism of the spherical tensorial calculus, analythical formulae for most of the observable quantities are provided for a magnetic field of arbitrary complexity. ...

... 323, P 659-673 (1997). Abstract . ... 323, P 674-684 (1997). ... Number counts and optical identifications of faint IRAS sources . ... 323, P 685-696 (1997). ... 323, P 697-706 (1997). ... 323, P 707-716 (1997). ... 323, P 717-726 (1997). ... 323, P 727-738 (1997). ... 323, P 739-748 (1997). ... 323, P 749-761 (1997). ... The [Fe/H] distribution of a volume limited sample of solar-type stars and its implications for galactic chemical evolution . ... helpdesk@link.springer.de . ...

... The optical spectrum of the infrared source IRAS04296+3429 (optical counterpart - G0Ia star, V=14.2) was obtained with the echelle spectrometer PFES at the prime focus of the 6m telescope. ... 1995, Szczerba et al. 1996), our detailed modelling of its spectral energy distribution suggested that this source also should show the 30 m band. ... Stars: abundances - Stars: atmospheres - Stars: AGB and post-AGB - Stars: individual: IRAS04296+3429 . ... Spectral energy distribution . ...

... 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....

... V.V.Shevchenko, Sternberg State Astronomical Institute, Moscow University, Universitetsky 13, Moscow 119899, Russia, shev@sai.msu.ru . ... 1.Sternberg State Astronomical Institute, 119899, Moscow, Russia. shev@sai.msu.ru . ... V.V.Shevchenko, Sternberg State Astronomical Institute, Moscow University, Moscow 119992, Russia, shev@sai.msu.ru . ... 119992 Moscow, Russia; . ... 2Sternberg Astronomical Institute, Moscow University, Moscow, 119992, Russia, . ... Moscow, 119992, Russia shev@sai.msu.ru . ...

... Shustov B.M., Wiebe D.S. Dust expelling from the Galaxy ( abstract from the journal ). Astronomy Reports , 1995, 39 , 578-586 [AZh, 72 , 650-659]. Wiebe D.S., Shematovich V.I., Shustov B.M. Chemical and dynamical evolution of protostellar clouds: initial stages of collapse ( abstract from the journal ). ... Shustov B.M., Wiebe D.S., Tutukov A.V. Evolution of disk galaxies and loss of heavy elements into the intracluster medium. ... ApJ (Letters), 1998, 503 , L71-L74 ( astro-ph/9806155 ). ...

documentstyle[12pt]{article} \begin{document} \centerline{\bf {STRUCTURE AND STAR FORMATION}} \centerline{\bf {IN CIRCUMNUCLEAR REGIONS OF SPIRAL GALAXIES}} \bigskip \bigskip \begin{abstract} Photometric and kinematic properties of inner regions of spiral galaxies are considered. It is shown that the fast rotation of nuclear gaseous disks makes them gravitationally stable or marginally unstable. ... Nuclear disks are usually distinguished by high angular velocity of gas. ...

... Optical conductivity of high Tc superconductors: from underdoped to overdoped. Abstract: . ... While in the underdoped regime the doping-induced changes in s(w) can be well described by an increasing density of mobile carriers, in the overdoped regime there is no evidence for such an increase. Our results are not consistent with the usual view on the overdoped regime where reduction of T c is associated with an increase in the density of mobile charge carriers. ...

... It is found that the correlation coefficients between these two parameters calculated separately inside and outside the sunspot formation zone ±30 have cyclic variation and occur in anti-phase. This suggests different mechanisms of formation of the corona in the fields of small, medium, and large scales. ... The relationship between the coronal green line brightness (CGLB) and the magnetic field strength (MFS) has been investigated by constructing the corresponding synoptic maps for the 1977-2001. ...