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. ...

Еще в разделе: (Показать все результаты (>12271) - www.stsci.edu/ )

• Dust Attenuation in Late-Type Galaxies. I. Effects on Bulge and Disk Components
• Starburst and Galaxy evolution
• The Flux Ratio Method for Determining the Dust Attenuation of Starburst...

Next: Selection effects Up: Emission-line galaxies Previous: Emission-line galaxies . ... O III ] ? ... In Fig. 4 emission-line galaxies from the HSS sample are plotted in comparison with some BCGs from the SBS (Izotov et al. [ 1994 ], [ 1997b ]; Thuan et al. [ 1995 ]) and ELGs from the Case survey (Weistrop & Downes [ 1988 ], [ 1991 ]; Augarde et al. ... We tentatively classify it as a possible LINER (low-ionization nuclear emission-line region galaxies; Heckman [ 1980 ]). ... emission lines. ...

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• HyperLEDA documentation: compilation of Color index (a112)
• The Hamburg/SAO Survey for Emission-Line Galaxies
• Balloon Model in Java

... 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 . ...

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. Back to A.Zasov's homepage.

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Star Formation in HI-Selected Galaxies Jessica Rosenber George Mason University AKARI Arecibo Today s Technology Spitzer The Next Generation SKA ALMA JWST Herschel Questions to address by studying SF in HIselected galaxies Ї What is the best way to measure SF in galaxies that, in some cases, may be metal poor Ї What is the SF rate density in the local universe? ... How does SF efficiency vary with galaxy mass? ... ADBS Not a star an ultra compact star forming dwarf galaxy! ...

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• Ionization and the Detection of Low HI Mass Galaxies
• NRAO Image Gallery
• Galactic Spiral Structure in H I Emission and Self-Absorption

Detecting Bias in a Self-Organizing Map of Galaxy Photometry Data Zach Clayto , Peter Capa , Dan Maste 1 1 r 2 k 2 rs Ohio Wesleyan University, 2Infrared Processing and Analysis Center, California Institute of Technology Abstract High redshift (very distant) galaxy surveys record broad-band photometry for billions of galaxies in order to measure distances in a faster, more cost-effective way than spectroscopy. ... High-redshift galaxies can be identified efficiently in such a mapping. ...

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• The galaxy M100
• The AstroStat Slog Blog Archive [ArXiv] Bimodal Color Distribution in GCS,
• The AstroStat Slog Blog Archive [ArXiv] SVM and galaxy morphological

... Published spectra . Published k-corrections (Bessel & Brett filters) . K-corrections using CIT filters . Filters used for the integration: U B V Rc Ic J CIT H CIT K CIT . Filters used for the k-corrections: J BB H BB K BB . New calibration of the spectra: set the desidered colors (Johnson BV- Cousins RI- CIT JHK) in the table below, press "SUBMIT" and save the output as text file. ... Spectra of individual galaxies ( calibrated in lambda and flux and normalized to average=1) . ...

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• A local window on galaxy formation with ALMA
• Galaxy archaeology over the last 7 billion years
• Hubble Provides Multiple Views of How to Feed a Black Hole (PRC98-14)

... 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. ... NASA Official: Jay Norris. ... Publications with keywords: spiral galaxy - spiral arms - NGC 4725 - infrared . Publications with words: spiral galaxy - spiral arms - NGC 4725 - infrared . ... Spiral Galaxy M83: The Southern Pinwheel . ...

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• The LMC Galaxy in Glowing Gas
• XWare > APOD
• Астронет > The LMC Galaxy in Glowing Gas

... MATERIAL: astronomical data visualization software like ds9 , IRAF, and the two galaxy images in the V-band and I-band . ... You received images in the V and I-band of an unknown, partially resolved Milky Way dwarf satellite galaxy. Your task is to generate a color-magnitude diagram (CMD) of this stellar system, find out what kind of stellar population it is made of (old, young?) and estimate its distance from the sun using well-known features identified in the CMD. ...

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• CHIAKI's Research
• Julie Banfield | Astronomer
• CHIAKI's Presentations

home education > activities . ... Quick math activity that asks students to calculate scale models of a binary star system with a black hole in it. [h] . ... Students use a radiometer and a light bulb with a dimmer switch to make connections between the temperature, color, and radiation output of a star. ... This demonstration, similar to the above, from the Exploratorium Snack-book of science activities, lets students demonstrate how molecules scatter light and change the colors of the beam. [m,h] . ...

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• ASP: An Ancient Universe - The Age of Light from the Most Distant Galaxies
• ASP: Beacons in the Gloom
• ASP: An Ancient Universe - The Age of the Expanding Universe

... Discovery of enrichment of the envelopes of post-AGB stars with heavy metals . As a result of monitoring carried out at the BTA telescope, a new phenomenon was discovered in the optical spectra of post-AGB supergiants with an emission at 21 ?m and an overabundance of carbon and heavy metals in the atmospheres - the splitting of the strongest absorption lines. ... Thus, we discovered for the first time the enrichment of the stellar envelope with heavy metals synthesized by the s-process. ...

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• Measurement of the dark halo shape in polar ring galaxies
• Galaxy sector, archive 1997
• Galaxy sector, archive 1994

. (artistic credits: J. English and B. Koribalski) . bkoribal @ atnf.csiro.au

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• The Circinus Galaxy
• The NGC 6221/15 Galaxy Group
• A new twist to polar rings

... The BM effect causes low-luminosity blazars (particularly BL Lacs) to be missed in surveys because the apparent luminosity of the non-thermal nuclear source does not exceed that of the host galaxy by a large factor. ... Browne (1995). ... In addition to these objects, a large fraction of the newly-identified BL Lacs in our sample (10 of 22; see Table 5) have been so classified only by virtue of our usage of the expanded March? et al. (1996) definition of the BL Lac class. ... 1996). ...

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• The hidden fires of the Flame Nebula* | ESO
• Stars and Galaxies
• ESO - VIMOS Science Verification Programs at Melipal/UT3

... 2006 January 23 . The LMC Galaxy in Glowing Gas . ... Explanation: What goes on inside of a galaxy? To help find out, astronomers from the Magellanic Cloud Emission Line Survey team imaged our neighboring LMC galaxy in spectacular detail and highlighted very specific colors of light emitted by glowing gas. ... The colors highlighted on the mosaic are light emitted by hydrogen (red), oxygen (green), and sulfur (yellow), while light from individual stars has been subtracted. ... About APOD | ...

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• APOD: 2011 February 26 - Shell Galaxies in Pisces
• APOD: 2000 December 4 - The Circinus Galaxy
• APOD: November 25, 1999 - 3C 295: X-rays From A Giant Galaxy

... We consider the astrophysical evolution of the Galaxy over large time scales, from early stages (an age of ~10 8 yrs) to the end of traditional stellar evolution (~10 11 yrs). ... In the model considered, the basic stages of Galactic evolution are as follows. ... Essentially all other basic parameters of the Galaxy vary little. ... The final "stellar epoch" in the life of the Galaxy is completed ~10 13 yrs after its formation, when the evolution of the least massive stars comes to an end. ...

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• Star Formation History
• Dust Expelling

... We suggest simple method of the selection of distant galaxies based on their radio properties. ... RC0015+0503a , RC0015+0503b , RC0015+0501 , RC0034+0513 , RC0038+0449 , RC0042+0504 . ... RC0105+0501 , RC0110+0500 , RC0117+0503 , RC0126+0502 , RC0133+0459 , RC0135+0450 , RC0137+0539 , RC0143+0505 , RC0152+0453 , RC0154+0459 , RC0159+0448 . ... RC0209+0501b , RC0213+0516 , RC0226+0512 , RC0250+0512 . ... RC0302+0456 , RC0308+0454 , RC0311+0507 , RC0318+0456 , RC0355+0449 . ...

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• astro-ph authors/title/abstract search for 'galaxy cluster' (skipped 200) all
• astro-ph authors/title/abstract search for 'galaxy merging' all years
• Informational system "Evolution of RG"

... Galaxy Evolution home . ... The origin and evolution of radio sources . Radio sources and their environments . ... We are investigating how this interaction effects galaxy evolution in general as well as the feedback effect of the radio source on its host galaxy and AGN. ... One direct observational manifestation of this interaction is the existence of extended regions of emission-line gas which show a clear spatial relationship to the radio source itself. ...

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• Research
• Galaxy Evolution: Regulation of the ISM and Star Formation
• Galaxy Evolution: Cosmological evolution of star formation

... Gravitational wave search provides insights into galaxy evolution and mergers . ... Is it possible that the gravitational effects attributed to dark matter could be caused by Jupiter-sized planets discovered orbiting other stars and also floating freely outside planetary systems? ... A large number of detected and undetected Jupiter-sized planets could not mimic the gravitational effects produced by dark matter for two reasons. ... Get instant access to subscriber content on Astronomy.com! ...

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• Working with color | Astronomy.com
• How to get great star colors | Astronomy.com
• Why do some stars appear to flash a variety of different colors when you look

... S-6.The X-ray Sun . S-7.The Sun's Energy . S-7A. The Black Hole at . our Galactic Center . ... Our Sun is part of a huge wheel-shaped collection of stars. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. ... Far from being a voracious devourer of stars and of interstellar gas, "our own" black hole is rather benign. ... What holds galaxies together? ...

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• Аксессуар Защитная пленка Samsung Galaxy J1 SM-J100 Activ матовая 48373
• Аксессуар Vivacase Challenge for Samsung SM-T530 / SM-T531 Galaxy Tab 4 10.1
• Коврики в салон FORD Galaxy 2007->, мв., 5 шт. (текстиль, серые) -