We present a quantitative investigation of the optical depth through spiral disks using BVRIJHK colors of 15 highly inclined Sab-Sc spirals and new models for radiative transfer in stellar disks. ... Preliminary comparisons of the observed optical and near-infrared (NIR) color gradients across galaxy dust lanes with predictions from radiative transfer models with slab and spherical shapes underscore the need for these realistic exponential disk geometries. ...

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

... The main research task of the LRS was an investigation of interstellar medium of our Galaxy using its line emission in radio domain with the help of the gratest RATAN-600 Radio Telescope. ... The complex investigation of the Interstellar Clouds structure on the different scales and with the different radio lines for understanding of structure, dynamics and evolution of interstar gas and its interaction with other galactic constituents and the conditions for star formation. ...

... This program will be a part of AATM-0.06 examples when this version is released. ... Comments regarding this example welcome at: // Bojan Nikolic b.nikolic@mrao.cam.ac.uk // # include string # include vector # include iostream # include fstream // Unfortunately the using statement below is required because of poor // desgin of the header files using namespace std ; # include ATMRefractiveIndexProfile.h # include ATMPercent.h # include ATMPressure.h # ...

This JAVA interface gives the possibility for working with the radio emission data of radio sources in clusters of galaxies from the Cluster database. ... For this, after loading the document with optical (or radio) data for the requested cluster, click on [ radio spectra (1.2 or 1.1)] in the top line of the document and then choose interface version which is compatible with your Internet-browser. ... For more information about the JDK support in the browsers see Java for browsers . ...

. My astronomical research interests center on galaxy structure and evolution. Current topics include: . Polar-ring and interacting galaxies (see also new catalogue ) . Galaxy warps: statistics, properties and origin . Spiral galaxies at z~1: radial and vertical structure of stellar disks, statistics of interactions . Surface photometry and kinematics, dynamical modeling . Observational cosmology . Joomla Counter since Sep 1997

Title: A New Model of the Gravitational Lens 0957+561 and a Limit on the Hubble Constant . Authors: Norman A. Grogin , Ramesh Narayan (Harvard Univ.) ... Title: ROSAT/PSPC observation of the distant cluster CL0939+472 . ... Title: Interaction in the Bimodal Galaxy Cluster A3528 . ... Title: Cosmological Implications of Galaxy Cluster Evolution . ... Title: Galaxy Cluster Virial Masses and Omega . ... Matches 201 to 222 from a total of 222 matches for the search pattern galaxy cluster . ...

Chiaki Kobayashi, Ralph Sutherland How galaxies did form and evolution? - to answer this unsolved problem, we are simulating the formation and evolutionary history of galaxies in the Universe, including star formation, supernovae feedback, and chemical enrichment. Comparing the spacial distribution of elements within galaxies with observations, we will examine fundamental physical processes that drive galaxy formation. ... COALA : Universe Galaxy AGN Star Planet ...

... The molecular lines group at Arecibo Observatory consists of Chris Salter, Tapasi Ghosh and Robert Minchin. ... The molecular line group at Arecibo Observatory started in 2006 with a proposal to carry out a spectral census of the star-burst galaxy Arp 220 . ... However, the most interesting discovery came from the observations of the polar ring galaxy, NGC 660. ... Molecular Lines in NGC 660 Arias de Saavedra Benitez et al., ... A cm-Wavelength Search for Pre-Biotic Molecules in Starburst Galaxies. ...

... Arizona ), SINGS Team , JPL-Caltech , NASA Explanation: While most spiral galaxies, including our own Milky Way , have two or more spiral arms, peculiar galaxy NGC 4725 has only one. ... The blue color is light from NGC 4725's population of old stars. ... Publications with keywords: spiral galaxy - spiral arms - NGC 4725 - infrared . Publications with words: spiral galaxy - spiral arms - NGC 4725 - infrared . ... Spiral Galaxy NGC 5033 . ... NGC 4565: Galaxy on Edge . ... At the Edge of NGC 891 . ...

... Sternberg Astronomical Institute , Moscow University . ... Present edition unites two parts of Catalogue of interacting galaxies by B.A.Vorontsov-Velyaminov: the first part (Part 1) containing 355 systems was published in 1959 [1] and the second one (Part 2) with 497 objects - in 1976 [2].Thus two published parts of Catalogue include 852 interacting systems. ... All new of them (1162 by number) were taken from the comments to the galaxies in Morphological catalogue by Vorontsov-Velyaminov et al.[ ...

... MNRAS, 327, 46-54 (2001). ... MNRAS, 326, 805-820 (2001). ... 139-140 (2001). ... MNRAS, 326, 358-374 (2001). ... FREIRE, P.C., CAMILO, F., LORIMER, D.R., LYNE, A.G., MANCHESTER, R.N. & D'AMICO, N. "Timing the millisecond pulsars in 47 Tucanae". MNRAS, 326, 901-915 (2001). ... TAKAHASHI, M., SHIBATA, S., TORII, K., SAITO, Y., KAWAI, N., HIRAYAMA, M., DOTANI, T., GUNJI, S., SAKURAI, H., STAIRS, I. & MANCHESTER, R.N. "Pulsed X-ray emission from the fastest millisecond pulsar PSR B1937+21 with ASCA". ...

... The sample of the Local Volume galaxies (distance smaller than 10 Mpc) gives a unique opportunity to study the properties of galaxies including the weakest objects: the absolute magnitude M B -10 and the virial mass M vir 10 9 M x263C;. ... Luminosity function of the Local Volume galaxies. ... The luminosity functions for galaxies are presented: red dashed line - from the 2dFGRS survey (Norberg et al. 2002); blue dash-dotted line - from the SDSS survey (Blanton et al. ...

... Radiative Transfer & Galaxy modelling . 09:30- 10:00 Nick Kylafis - Radiative transfer in spiral galaxies . ... 10:30- 11:00 Coffee break . ... 12:00- 12:30 Angelos Misiriotis - Dust in near-by edge-on spiral galaxies from the 2MASS Large Galaxy Atlas. ... for the Study of Gas and Dust in Galaxies . ... 15:00- 15:30 Leslie Hunt - Bulges and disks in spiral galaxies: clues for secular evolution? ... 09:00- 09:30 Edvige Corbelli - Dust and gas as tracers of star formation in M33 . ...

... Editor's choices for the most educational Astronomy Pictures of the Day about the Local Group of galaxies: . APOD: 2000 October 23 - Dwarf Elliptical Galaxy NGC 205 in the Local Group . ... Members include the Great Andromeda Galaxy (M31), M32 , M33 , the Large Magellanic Cloud , the Small Magellanic Cloud , Dwingeloo 1 , several small irregular galaxies , and many dwarf elliptical and dwarf spheroidal galaxies . ... APOD: 1999 January 22 - Pegasus dSph: Little Galaxy of the Local Group . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Colin Johnston . ... This submillimetre-wavelength image of the region surrounding the reflection nebula M78 made with the Atacama Pathfinder Experiment (APEX) telescope (overlaid on a view of the same region in visible light) shows the position of interstellar dust grains (orange) to show where new stars are being formed.( ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

... Full version (including all figures and appendices [3.1 MB]) . Reduced version 1 (except german summary and appendices [2.4 MB]) . Reduced version 2 (except german summary, appendices and figures [0.2 MB]) . ... Figures of Chapter 2 (10 figures [1.4 MB]) . ... Chapter 2 ( Photometry of galaxies in selected CCD fields [1.4 MB]) . ... Chapter 6 ( Summary and Future Work [40 kB]) . Chapter 7 ( Zusammenfassung (German summary) [36 kB]) . Appendix A ( The photometric catalog [65 kB]) . ...

... Natalya V. Raguzova and Sergei B. Popov . ... We present a compilative catalogue of Be/X-ray binaries and candidates in the Galaxy and in the Large and Small Magellanic Clouds. This catalogue contains 160 sources and provides information on names and spectral types of optical components, distances, on spin characteristics of neutron stars, and on orbital and X-ray properties of binary systems. ... Be/X-Ray Binaries and candidates in the Galaxy . Galactic sources: comments to the Table 1 . ...

... Our Milky Way galaxy is host to a number of companions. These companions are gravitationally bound to the Milky Way and are stellar systems in their own right. They include a population of about 150 globular clusters (GCs) and some 30 dwarf satellite galaxies (DSGs). ... These DSGs are more extended and diffuse compared to GCs. In fact the larger satellites of the Milky Way (and other galaxies, for that matter) host their own small systems of GCs. ...

... Dept. for Physics of Stars&Galaxies . ... Using a database view Sloan Digital Sky Survey (SDSS), containing almost a million spectra created 15,000 sample galaxies with active star formation, which is used for various studies and physical state of evolution of galaxies. ... Star clusters of the Galaxy . The project MWSC (Milky Way Star Clusters) directory using 2MASS, which includes nearly 500 million vision to the limit Ks = 15.3, analyzed more than 4,000 cluster-like objects in the galaxy. ...