. F IGURE . 3. The metallicity distribution of F stars of the restored sample in different age ranges at three distances from the galactic plane. The curves are the approximation of the histograms by the sum of two Gaussians. The ordinates are the percentage of such stars in the total restored number of stars. discussion in the text | next figure | previous figure .

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• Galactic disk subsytems, figures
• Subsystems of the Galactic halo, figures

Next: Zeeman Analysis Up: Modelling galactic disks Previous: Fitting a rotation curve . ... To make the tilted ring model one must utilise also imgen and maths (see Sections 18.7 and 18.5 ). The warp is simulated by varying the inclination and position angles of successive annuli (usually suggested from various plots from data.cube such as closure of isovelocity contours along the major axis and twists in channel maps showing the minor axis). ... centred 60 arcsec south of the image centre, . ...

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• Modelling galactic disks
• Fundamental Relationships in Galactic Disks
• Four new millisecond pulsars in the Galactic disk

HST images of the nuclear gas and dust disk in NGC 7052. The top panel shows a true-color composite HST image, with a ground-based image as inset. The bottom panel shows false color images in, from left to right: I-band, B-I, H_alpha + [NII] (ionized gas). The gas kinematics inferred from HST/FOS spectra suggest a nuclear BH of 3 x 10^8 solar masses ( [R13] , [R22] ). See the Space Telescope Science Institute Press Release for more information. ...

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• Managing Your Disk Space
• Boron in the Galactic Halo and Disk
• Black holes in galactic nuclei

Presented on Tuesday, January 7, 2003 . We construct a detailed longitude-velocity diagram through the actual midplane of the Galactic H I disk. The Galactic midplane definition is based on single-dish sky surveys, and the detailed l-v slice ( Fig. 1 ) is extracted from the Canadian Galactic Plane Survey ( CGPS ; Taylor et al. 2003 ). ... Note: other slices offset from this one were not shown in the AAS poster for lack of space, but they are available here . ...

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• I-GALFA Reveals Dynamic Events in Our Galaxy
• Galactic Spiral Structure in H I Emission and Self-Absorption
• Heiles Symposium Presentations

... A homogeneous chemical analysis of the inner Galactic disk from the first data release of Gaia-ESO . ... Gaia-ESO is a public spectroscopic survey designed with this goal in mind. ... These first results highlight the potential of the Gaia-ESO survey to explore areas of the Milky Way still poorly studied, such as the inner disk, and to give new constraints on Galactic chemical evolution models. ... Map of observed targets of the first data release of the Gaia-ESO Survey. ...

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• Doug Johnstone's Orion Page
• Star formation
• Dust evolution across the CO snowline in a protoplanetary disk

Geoff Bicknell, Alexander Wagner We are engaged in the following computationally intensive projects related to Black Hole and other energetic phenomena. Accretion disks. ... We envisage that we will determine the way in which gravitational energy is channeled into the high temperature coronae of black hole accretion disks and into relativistic jets and winds. ... Feedback from black holes and starbursts. ... COALA : Universe Galaxy AGN Star Planet ...

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• GSAOI Disk Galaxies Science Page

... 2003 January 16 . NGC 1700: Elliptical Galaxy and Rotating Disk . ... CXC , NASA . ... So astronomers were excited to find that NGC 1700, a young elliptical galaxy about 160 million light-years away, shows evidence for a 90,000 light-year wide rotating disk of multi-million degree hot gas. ... Theories about the origin of the disk suggest that NGC 1700 may be the result of a cosmic scale galactic merger , perhaps between a spiral and elliptical galaxy. ... About APOD | ... NASA Technical Rep.: ...

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• APOD: February 3, 1999 - A Galactic Mushroom Cloud
• APOD: 2003 May 5 - NGC 1275: A Galactic Collision
• APOD: 2013 June 20 - Edge-on NGC 3628

... CXC , NASA Explanation: In spiral galaxies, majestic winding arms of young stars and interstellar gas and dust rotate in a disk around a bulging galactic nucleus. Elliptical galaxies seem to be simpler, randomly swarming with old stars and lacking gas and dust. So astronomers were excited to find that NGC 1700, a young elliptical galaxy about 160 million light-years away, shows evidence for a 90,000 light-year wide rotating disk of multi-million degree hot gas. ... Elliptical Galaxy M87 . ...

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• Астронет > NGC 1700: Elliptical Galaxy and Rotating Disk
• XWare > APOD

... This relieves the rest of the computer from knowing how to use the drive, since the controllers for different types of disks can be made to use the same interface towards the rest of the computer. ... Usually the number of sectors is the same for all tracks, but some hard disks put more sectors in outer tracks (all sectors are of the same physical size, so more of them fit in the longer outer tracks). ... For example, a hard disk might have 8 heads, 2048 tracks, and 35 sectors per track . ...

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• Galactic distribution and absolute magnitudes
• Using Disks and Other Storage Media
• Strong Gravity in the Vicinity of Supermassive Black Holes - by Eamon Scullion,

... The circumnuclear GASEOUS disks are often decoupled from the circumnuclear stellar disks and are even stronger inclined to the outer disk planes; in fact, we have found a considerable `population' of inner polar rings. Inner gas polar rings are found as in spiral galaxies with the massive outer gas disks co-planar to the main symmetry planes (e.g. NGC 2841, Sil'chenko et al. 1997, and NGC 7217, Sil'chenko & Afanasiev 2000) as well in many lenticular galaxies (Fig. ...

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Bizyaev D., "The Argument Against Long Extragagalactic Distance Scale", Astron. ... Soviet Astronomy) 1997. ... Zasov A., Bizyaev D., "An Estimate of the Hubble Constant using a Criterion for Gravitational Stability of Gaseous Discs", Pis'ma v Astron. ... 1996. ... D.Bizyaev, "Types of galaxies", 1996, Zvezdochet, No 11, p.22 (in Russian) . D.Bizyaev, "The Hubble Constant", 1996, Zvezdochet, No 2, p.20 (in Russian) . D.Bizyaev, "Magellanic Clouds", 1995, Zvezdochet, No 6, p.12. (in Russian) . ...

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• Previous and Proposed

... Galaxies 99 Cosmic background with model of cloudy interstellar medium Yu. ... Figure 1: Averaged spectrum of the cosmic background I f in frequency range 0.25 200 MHz for the Galactic poles. ... First interpretation of the cosmic noise background spectrum at broad band frequency range 0.25 200 MHz with a model of the cloudy interstellar medium ISM is presented here. ... Synthesized background spectra I f for regions of the Galactic poles at the frequency range 0.25 200 MHz is presented in Fig. ...

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• List of solar disk images

2014 May version . ... Green D. A., 2014 , Bulletin of the Astronomical Society of India, 42 , 47-58. ( .pdf , or arXiv.org:1409.0637 ) If you make use of the detailed version of the catalogue, then plaese also cite: . Green D. A., 2014, `A Catalogue of Galactic Supernova Remnants (2014 May version)' , Cavendish Laboratory, Cambridge, United Kingdom (available at "http://www.mrao.cam.ac.uk/surveys/snrs/" ). ... Copyright D. A. Green 2014. 25872nd access to this version of the catalogue. ...

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Next: Rapidly Rotating Stars Up: Discussion Previous: Relations . ... They attributed this to a mechanism which regulated stellar angular momentum through the accretion disk. ... While some of this may be due to sampling effects, the data seem to indicate that after a star loses its disk, either it continues its slow rotation for a period of time and then a rapid increase in rotation rate commences or spin up does not necessarily follow the loss of the disk. ...

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• Introduction
• Vertical Structure of the Secondary: Hydrostatic Model
• The Epsilon Aurigae Secondary: A Hydrostatically Supported Disk

... Aims: Today, large ground-based instruments, like VISIR on the VLT, providing diffraction-limited (about 0.3 arcsec) images in the mid-infrared where strong PAH features appear enable us to see the flaring structure of the disks around Herbig Ae stars. Although great progress has been made in modelling the disk with radiative transfer models able to reproduce the spectral energy distribution (SED) of Herbig Ae stars, the constraints brought by images have not been yet fully exploited. ...

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... On the base of laboratory simulations (on rotating shallow water) of the formation of spiral arms in galactic gaseous disks, the existence of giant anticyclones in them was predicted. Numerical simulations shown that the vortex structures arise on a linear stage of spiral arms formation simultaneously with the latter. ... Thus second giants structures, after spiral arms, in spiral galactic disks are discovered. ...

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• INASAN preprint: A method of the reconstruction of 3D velocity field of gas in
• Main Researches Activities
• Papers of Vortex project

. Cosmology . Very Early Universe . Cosmic Microwave Background Anisotropy . Dark Matter Models . Large Scale Structure . High Energy Astrophysics . Active Galactic Nuclei . Astrophysics of Compact Objects . Accretion Disks . Scientific Staff:

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... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... active galactic nuclei . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

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• Simulated galactic crack ups | Astronomy.com
• Behind the scenes of galactic research | Astronomy.com
• View more active galactic nuclei | Astronomy.com

... Bad Astronomy . ... Mad Science . ... Or..why don't the planets orbit the sun in the same plane as the sun orbits the galactic center? ... The writer suggested that the angular momentum of the stars was related to the original cloud that collapsed to form them and not the galaxy angular momentum. ... As I understand the answer to 902372110.as, if the stars orbit is not related to the galaxy spin, then I would expect the stars to orbit the galaxy at a multitude of random orbits and no disk to form. ...

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• Phil Plait's Bad Astronomy: Bitesize Astronomy

... There are two stars in the binary system: a donor star on the right and a black hole on the left (an infinitely small point in the center of a complex figure). ... The wind is ejected as a hollow cone; it has a funnel (the funnel opening angle in the figure) and thick walls (wall opening angle in the figure). The observer looks at the whole system and the supercritical disk from the right, and sees everything up to the wind photosphere (the red color in the figure). ...

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• Evidences of supercritical accretion onto black hole in SS433
• Metagalaxy sector, archive 2002
• Sun image