... 2004 April 14 . Massive Star Forming Region DR21 in Infrared . ... Explanation: Deep in the normally hidden recesses of giant molecular cloud DR21, a stellar nursery has been found creating some of the most massive stars yet recorded. The orbiting Spitzer Space Telescope 's Infrared Array Camera opened the window into the cloud last year in mid- infrared light. The cloud is opaque to visible light because of dense interstellar dust . ... About APOD | ...

Next: Binary Radiopulsars with Black Up: Black Holes in Binaries Previous: Black Holes in Binaries . Two different types of stellar BH formation exist: (1) direct core collapse   of a massive star and (2) AIC of a NS. A BH of the first type presumably will have a mass comparable to that of the collapsing star and can be born both from a single star and in a binary system. ... Next: Binary Radiopulsars with Black Up: Black Holes in Binaries Previous: Black Holes in Binaries Mike E. Prokhorov . ...

Astronomy Picture of the Day . Mountains of Creation . ... An infrared view from the Spitzer Space Telescope , it features interstellar clouds of cold gas and dust sculpted by winds and radiation from a hot, massive star outside the picture (just above and to the right). ... NASA Official: Jay Norris. ... Publications with keywords: star formation - dust - interstellar medium . Publications with words: star formation - dust - interstellar medium . ... The Trifid Nebula in Stars and Dust . ...

The critical role of disks in the formation of high-mass stars . ... Sacco, G.G., Randich, S., Franciosini, E., Pallavicini, R., Palla, F. 2006, A Letters, in press . ... Scelsi, L., Maggio, A., Micela, G., Pillitterei, I., Stelzer, B., Briggs, K., Guedel, M., Grosso, N., Audard, M., Palla, F. 2006, A , in press . ... Franciosini, E., Pillitteri, I., Stelzer, B., Micela, G., Briggs, K.R., Scelsi, L., Telleschi, A., Audard, M., Palla, F., Guedel, M. 2006, A , in press . ... Star Formation Group . ...

home publications > mercury . ... Rings of Creation . ... In 1755, Immanuel Kant had the remarkable insight that stars and planetary systems form by the gravitational collapse and rotational flattening of interstellar clouds. Later in the 18th century, Marquis Pierre Simon de Laplace refined Kant s idea by suggesting that planets condensed from rings produced at the edge of a contracting disk while the Sun formed at the center a picture thereafter known as the Nebular Hypothesis. ...

... STScI-PRC95-45a CRUCIBLE OF CREATION: PANORAMIC HUBBLE MOSAIC ZOOMS IN ON MAELSTROM OF STAR BIRTH This spectacular color panorama of the center the Orion nebula is one of the largest pictures ever assembled from individual images taken with NASA's Hubble Space Telescope. ... Though this 2.5 light-years wide view is still a small portion of the entire nebula, it includes almost all of the light from the bright glowing clouds of gas and a star cluster associated with the nebula. ...

... SSAU History . SSAU roadmap . ... Scientists of SSAU and specialists of JSC Metallist-Samara work out a project on creation of import-substituting sea water desalting plants and wastewater treatment plants. ... So, the first experimental installation designed to produce one cubic meter of fresh water per hour, has a power consumption of only 10 kilowatt-hours, which is at the level of the latest foreign desalination plants. ... e-mail: ssau@ssau.ru . http://www.ssau.ru . ...

Spinning discs in space Mass feeding and feedback in YSOs . ScienceAlert Ever wonder how solar-mass stars form? By Tim Wetherell. Sticking to the stars . The complex processes creating accretion discs . ... Disks, Winds and Jets: From Planets to Quasars . ... Theory and modelling of accretion processes . Protoplanetary discs . ... Star formation . Jets and winds . ... Email: raquel@mso.anu.edu.au . ... Webpage: http://www.mso.anu.edu.au/~raquel/ . ...

Next: M.E. Bailey, Director Up: Research Previous: C.S. Jeffery, Research Astronomer Contents . ... How do Stars Form? ... Other Work and Activities . ... The interaction of young stars with their surroundings are accentuated within Herbig-Haro Objects, where streams and `bullets' of ejected gas impact on the ambient molecular clouds. ... The astrophysical jets are spectacular. ... Michael Smith and collaborators have searched for, and found, the first evidence of rotation within the jets. ...

... Background: massive star formation! ... Scaled up low mass star formation?! What are the initial conditions (density, temperature, kinematics) for high-mass star formation?! ... Differentiate low & high-mass star-forming filaments.! ... 0.04 pc cloud structures -> protostellar or prestellar cores, i.e., the direct progenitors of individual high-mass stars.! ... High-mass stars form preferentially in ridges, high-column density (Av > 100 mag), wide (>0.3 pc) filaments present in specific regions.! ...

. Next: Print form sheets Up: Quick Guide Previous: Open the data file Contents . A CCESS L OAD INTERFEROMETRY will load Date, SystemId, GenConfig, and GeoParms, create the ScanTable and BGTable, load the background scans, and display the point data loading widget (see below). Christian Hummel 2015-04-28

Photon Scattering: Basic Principle of Photon Scattering . Audio Narration is available . No Scattering: Photon Source and Detector . ... For optical photons, scattering goes as wavelength to the -4 power. In the case of blue photons compared to red photons, this means that blue photons are about 10 times more likely to get scattered than red photons. ... Watch the blue photons scatter away from the detector . ... Interstellar dust make stars appear redder than they really are . ...

The compression of the cloud of gas in star forming . ... These data have allowed us to create the dynamic model of the cloud of gas, around this object. ... The results on H2CO absorption lines (figure 1) have shown, that the central part of the cloud represents a clumped envelope of diameter 9 pc with radial velocity 20 km/s. The relation of radial velosity of absorption line and the whole object have allowed simple to define the direction of radial movement - itis compression. ...

... To run the <LAYER> version of the example, select: flower.htm . ... However, if the page had several layers with absolute positions, and you wanted to place another layer in a relative position to one of the existing layers, you could use inline JavaScript to calculate the value for LEFT or TOP . ... In this example, there is really no need to use inline JavaScript to position the last flower layer, since you could just let the TOP value default to its natural value, as in the other flower layers. ...

... Our Galaxy . ... Stars . ... Space Flight . ... NGC 2841: a spiral galaxy some 46 million light years away. ... It is especially hard to explain this process of star birth in some spiral galaxies. ... Targets include both star clusters and galaxies, and star formation rates seen range from the starburst galaxy M82 (the Cigar Galaxy) which is creating about ten new stars in its core alone every year to the much less fecund star producer NGC 2841. ... Tweets that mention Baby stars of NGC 2841 | ...

. Our publications September 2008 . February 2011 . Kniazev Alexei 1997 year. PhD thesis "The elaboration of methodics to search for Blue Compact Galaxies and detailed studies of some selected BCGs" . Short form (in Russian) . Full text (HTML format, in Russian) . Full text (in Russian, ps-file ~2.4Mbt) . Ugryumov Andrei 1997 year. PhD thesis "The Creation of the Samples of Blue Compact Galaxies and analysis of their spatial distribution" . Short form (in Russian) .

... HST . ... Data . ... HST Overview . Overview . ... Retrieving HST Data . ... Temperature . ... Reference Files . ... This page has been set up to facilitate the making of dark reference files corresponding to a specific temperature. ... This means having a temperature sensitive dark reference file is critical to the calibration process. Right now this form only accomodates multiaccum data. ... These files contain engineering and support data for the observation, including the temperature. ...

... GOODS-Herschel reveals gas mass role in creating fireworks versus beacons of star formation . Data show that while mergers triggered star formation in some galaxies in the early universe, the majority of star-forming galaxies were not undergoing interactions; the amount of gas present drove the formation. ... Credit: ESA/GOODS-Herschel Team and R. Gobat . ... Only registered members of Astronomy.com are allowed to comment on this article. ...

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

After some period of quiet Sun the exciting Sun-Earth connections event as the big magnetic storm was observed at January 10-11, 1997 by various satellites and ground-based instruments. Scientist meet this challenge with unprecedented activity and a few data bases was created in relation with solar event/magnetic storm on a few WEB-sites. ... According the Moscow observatory data the sudden storm commencement (SSC) take place at 01:08 Universal Time of January 10, 1997. ...