... 4. (a) Distribution of distance from the Galactic plane, (b) kinematic diagram, and (c) relation between metallicity and distance from the Galactic plane for RR Lyrae stars with [Fe /H ] > -0.95 . ... The solid line in the middle panel is a regression line, whose slope is determined by the subsystem’s rotation rate; the open circles and dashed line correspond to stars with [Fe/H] > -0.4, and the filled circles and dashed line to stars with -0.95 < [Fe/H] < -0.4. ... next figure | privious figure . ...

... Chubukova I. - Data Mining (2007) PDF Data Mining . Hand D. Mannila H. Smyth P. - Principles of data mining (2001) DJVU Data Mining . Mitra S. Acharya T. - Data mining (2003) (In Russian) DJVU Data Mining . Abbass H. Sarker R. Newton C. - Data Mining Heuristic Approach (2002) PDF Data Mining . Rao C. Wegman E. Solka J. - Handbook of Statistics Data Mining and Data Visualization (2004) PDF Data Mining . ... Whittet D. - Dust in galaxies (2003) PDF Межзвездная среда . ...

... Our resulting sample of ELGs presented in Tables 2 and 3 is not artificially biased to any specific type of galaxies. ... Since we are looking for selection of a sample of Case BCGs, it is interesting to examine how the detected BCGs are connected with Case emission-line codes. ... Altogether BCGs comprise about 60 % of all Case ELGs which display emission lines in our spectra, or about 44 % of all Case galaxies with some emission-line code. ... Among those with the code ``w'' about 40 % are BCGs. ...

M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

Next: Structure of the Galaxy Up: Model of the Galaxy Previous: Model of the Galaxy . As discussed above (Section  6 ), galactic binary systems are assumed to be distributed logarithmically along their semi-major axis A (Abt and Levy, 1976[ 2 ]), . ... Figure 40: Number of binary stars per frequency decade. ... As the observed distribution of binary periods is flat (equation ( 15.3.1 )), the normalization constant is the total number of galactic binaries per frequency decade: . ...

The stellar halo of NGC 5128 Marina Rejkuba European Southern Observatory ESO/MPIA 2.2m+WFI Made by: B. Vandame Galaxy halos · Historical record containing the oldest and the most metalpoor stars ­ how galaxies assembled their mass ­ early phases of galaxy formation Do all galaxies have extended halos? ... How old are halo stars? ... 2005 Getting a handle on age AGB bump (AGBb) Red clump (RC) <Mag(age)> = n(Z) * Mag(Z,age) * dZ Average age of halo stars in NGC 5128 ~8±3 Gyr (Rejkuba et al. ...

... This motivated the SAGE-SMC (Surveying the Agents of Galaxy Evolution in the Tidally Stripped, Low Metallicity Small Magellanic Cloud) Spitzer Legacy program with the specific goals of studying the amount and type of dust in the present interstellar medium, the sources of dust in the winds of evolved stars, and how much dust is consumed in star formation. ...

... According to the most popular cosmological paradigm, the greater part of the galaxy mass is accumulated in the dark matter halo. ... The polar ring galaxies (PRGs) reveal external rings or disks of gas, dust and stars rotating in a plane roughly perpendicular to the disk of the central galaxy. ... The shape of the dark halo in the model was chosen so as to achieve the best fit to the observed rotation of both galaxies themselves and their polar rings. ... The SPRC-7 galaxy. ...

... Cen A/NGC 5128 . ... Centaurus A = NGC 5128 . ... Its optical counterpart is known as NGC 5128, the nearest giant elliptical galaxy to our Milky Way. ... NGC 5128 has had a perturbed life. It has definitely undergone at least one recent merger event, which left a prominent dust lane in the center of the galaxy, but also some neutral cool gas orbiting in the halo at larger distances from the galaxy center. ... How old are the stars in the halo of NGC 5128 (Centaurus A)? ...

PhD Thesis (PDF) . ... The evolution of stars and gas in galaxies. Observing the atomic neutral hydrogen (HI) 21 cm emission and radio continuum emission of galaxies. ... The goal of research is to quantify the neutral atomic hydrogen (HI) gas content galaxies as they evolve with time. ... Neutral atomic hydrogen gas produces a radio signal that can be used to directly measure the amount of gas present. ... USyd Summer Research Scholarship Report (PDF) . ... Research Topic Write Up (PDF) . ...

... This is a list of known variable stars near galaxies. ... IAUC 7482 . ... M31 . Nova M31 2008-11b . ... Nova M31 2008-08e . ... CBAT M31 page . ... IAUC 4059 . ... NGC 4013 . ... IAUC 6920 . ... PSN J12025798+0450397 . ... PSN J13343998-2340528 . ... MCG -2-37-6 . Galactic Variable . ... NGC 6340 . ... IAUC 8153 . ... Variable near UGC 10700 . ... Variable near MCG +07-36-33 . ... IAUC 7141 . ... NGC 6822 . Variable near NGC 6822 . ... IAUC 8141 . ...

OptInt PmWiki : Pm Wiki / Page specific variables . ... Page variables have the form {$ variable } , and can be used in page markup or in certain formatting strings in PmWiki. ... Prefixing the variable name with an asterisk (*) means the variable reflects the value related to the target page or main page. ... Namespaced} - spaced page name, as in "Page Variables" . ... Defines new Page Variable of name $CurrentSkin, which can be used in the page with {$CurrentSkin} (also for Conditional markup ). ...

... The distribution of galactic RCB stars is controversial. Several authors have argued that they belong to a thick galactic disk, and are thus old Population I stars. ... However, their distribution and space velocities suggest they may alternatively belong to the even older galactic bulge (Population II, [ Drilling 1986 ]). ... These are the only RCB stars for which a distance is known and hence for which an absolute magnitude can be deduced. ...

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...

An image of the grand design of spiral galaxy M100 obtained with NASA's Hubble Space Telescope resolves individual stars within the majestic spiral arms. ... Hubble has the ability to resolve individual stars in other galaxies and measure accurately the light from very faint stars. This makes space telescope invaluable for identifying a rare class of pulsating stars, called Cepheid Variable stars embedded within M100's spiral arms. ... 617) 495-7062 . Fax: (617) 495-7356 . ...

... Explanation: How do you calibrate a huge gravitational lens? In this case the lens is the galaxy cluster Abell 383 , a massive conglomeration of galaxies, hot gas, and dark matter that lies about 2.5 billion light years away ( redshift z=0.187). ... This technique compl e ments other measures including computing the dark matter needed to contain internal galaxy motions , to confine cluster hot gas , and to create the gravitational lens image distortions. ... The Hercules Cluster of Galaxies . ...

. Distribution of Supernovae according to their parent galaxies' recession velocity. This graph shows the distribution of SNe according to the recession velocity of their parent galaxies. This graph is kept up to date till SN 2000ek . Along X-axis there are all velocity bands so that you have to read in this way: for example, the band on the graph marked as 2000 takes in all parent galaxies' recession velocities faster than 1000 until 2000 Km/sec.

ARCSAT ID NUMBER: AS07 DESCRIPTIVE TITLE: Census of Variable stars in the UMi dwarf spheroidal galaxy. ... BRIEF SCIENCE JUSTIFICATION: The classical dwarf spheroidal galaxy Ursa Minor contains a large number of variable stars, particularly of the RR Lyrae and anomalous Cepheid types. ... The photometry will be done with DAOPHOT, much like the Nemec study, and the analysis of the RR Lyrae population will be similar to the work done with the Draco dwarf spheroidal galaxy (Kinemuchi et al. ...

The project of the informational system creation on the problem of evolution of radio galaxies, as a part of the "Big Trio" project aimed on studing of distant radio galaxies, is designed. This system allows a user to operate with simulated curves of spectral energy distributions (SED) to estimate ages and redshifts by photometry data. Authors use SEDs of several models for different types of galaxies. ... The HTTP and e-mail access is organized to this system. ...

... О Далекой Галактике . ... Теперь в Далекой Галактике вы всегда можете увидеть свежие фотографии Солнца. ... Форум . Форум "Далекой Галактики" - прекрасное место для общения всех астрономов. ... Новости из космоса . ... Подписаться на новости Далекой Галактики Вы можете здесь: . ... Новости из Далекой Галактики - популярно об Астрономии . ... Если вы хотите выразить свое мнение о сайте "Далекая Галактика", или просто почитать мнения других посетителей - пожалуйста, заходите в Гостевую книгу . ...