... The RAS Meteorite Collection: State on the 1 st of June, 1999 . ... About the laboratory . ... Find 1749. One mass of 687 kg . ... Fall 09 February 1929. 11 masses totaling 3738 g, the largest is 2128 g . ... Chondrite . ... Find 1986. 3 masses totaling about 25 kg . ... Fall 24 March 1933. 75 masses totaling 3-4 kg . ... Fall 29 July 1935. 5 masses totaling 37.35 kg, the largest is 23 kg . ... Fall 23 May 1938. 4 masses totaling 127.5 g . ... Fall 02 October 1933. 10 masses totaling 3.4 kg . ...

... However, the comparison of masses deduced from the continuum SIMBA 1.2 mm emission and virial masses (understood to trace the entire potential of the clouds) in a sample of giant molecular clouds in the Small Magellanic Cloud (SMC) by previous studies found a discrepancy between these two quantities that requires explanation. ... Methods: New observations of the southwest region of the SMC were obtained with the LABOCA camera on the APEX telescope. ...

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... A total of 462 were detected, about half of these for the first time. ... Ojects not Detected ----------------------------------------- l b BRMS mK Notes ----------------------------------------- 6.490 + 0.084 5.1 W28 SNR 6.648 + 0.084 4.2 W28 SNR 8.989 +35.502 3.5 S33 B 11.531 +36.350 3.1 S36 A 13.456 + 0.156 3.5 SNR 16.732 + 0.079 3.5 SNR 19.961 - 0.175 3.5 SNR 21.347 - 0.628 3.8 Extragalactic 25.253 - 0.150 5.7 Extragalactic 25.520 0.215 5.2 28.600 - 0.126 4.0 SNR+HII+? ...

... A2326 Date Received: 2007-Jun-01 13:40:59 Technical Page Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Astronomy Spectroscopy Galactic 18 Hours 1 hour An Arecibo Survey for H2CO Masers toward Non-Massive Star Forming Regions At present, formaldehyde (H2 CO) 6 cm masers have been detected only toward 7 regions in the Galaxy; in all cases the masers have been found toward massive star forming regions. ...

... The relationship of the mass and the observed galactocentric distance R -- (a), and that of the mass and the total dissipation velocity n taken from Gnedin, Ostriker (1997) -- (b). The dotted line in diagram (a) shows the "cone of survival" according to the paper by Surdin and Arkhipova (1998) . ... The solid line is a regression stright line for the main sequence of clusters, and the dotted line parallel to it separates the sequence of clusters of anomalously small mass shown by open triangles. ...

... The total pressure P in a non-degenerate, ionized region of a not-too-luminous star can be considered as that of a simple perfect gas alone (i.e. radiation pressure can be ignored). ... Similarly, the energy density per unit mass is U = 3 k T /µmH . Using the 1st Law of Thermodynamics, 2 show that in this region of the star, the adiabatic exponents 1 , 2 and 3 are all equal to 5 , 3 where the exponents are defined as 1 = ( d ln P )ad , d ln ad d ln T 2 - 1 =( ) 2 d ln P and 3 - 1 = ( d ln T )ad . ...

... Massive Star Forming Region DR21 in Infrared . ... JPL , Caltech , NASA 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 . ... A Galactic Star Forming Region in Infrared . ...

... 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 | ...

Variations of total ozone content and lower ozone stratosphere temperature in Antarctic Region during winter-spring period A.V. Grytsai National Taras Shevchenko University of Kyiv Astronomy and Space Physics Department assen@univ.kiev.ua Data, used in the work work Total ozone: Total Ozone Mapping Spectrometer (TOMS) measurements during 1979 - 2005 and Ozone Monitoring Instrument (OMI) ones for 2006, for http://toms.gsfc.nasa.gov/ftpdata.html. ... A long-term TOC decrease is significant. ...

... We report on our ongoing project ``Infrared Study of HII Regions Associated with Small Clouds.' ... These IR data, combined with optical imaging (which will be obtained from the IAC-80 telescope), IRAS survey maps, and existing CO observations of the associated clouds, will allow us to undertake a detailed investigation of the gas-to-dust mass ratio, initial mass function and the star-formation efficiency in these complexes. ... CHECKPSF: check the PSF (Point Spread Function) model, . ...

... We assume that an instantaneous starburst occured in the region of the Galactic center, with half of the stars (in number) being formed in binaries. The total mass of the stars formed during the starburst was taken to be , as indicated by the Tamblyn & Rieke (1993) analysis. ... In fact, the number of stars in IRS 16 estimated by Tamblyn & Rieke (1993) is uncertain within a factor of 2, but this is actually of no importance as long as we only use relative numbers of different X-ray source species. ...

The SOHO spacecraft currently supplies daily images of the solar corona at 1.1-3, 2-6 and 4-30 solar radii. Are ground-based solar corona observations during total solar eclipses have becoming obsolete nowadays? A quick view of SOHO data shows that it is not perfect in some respects. ... On March 9, 1997 an expedition has been organized by the Russian Academy of Sciences to the Baikal region in Siberia for observation of the total solar eclipse. ... Fig. ... Lens: F = 1m, D = 170 mm . ...

. True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR . Images show regions used to extract spectra . Regions with red strikes are excluded . Background was subtracted from a region around or close to the SNR. Back to SNR J0509.5-6731 Index . Chandra Supernova Remnant Catalog . Main Page | Galactic SNR | Magellanic Cloud SNR . True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR .

Next: Low-Mass Star Formation Up: M.D. Smith Previous: M.D. Smith Contents . Massive stars are of elevated importance in our Universe for several reasons. ... During their lives, they influence the nurseries in which new stars might form. ... He and Michael Smith investigated the consequences of massive star formation in one such region of our Galaxy. They uncovered that massive stars are forming in the Rosette Molecular Complex at a rate way beyond previous expectations. ...

... FOR EACH channel: IF ( fgExposure > 0 ) fgT = fgCounts ? fgMass / fgCounts : fgExposure / fgPixels COUNTS = fgCounts AREASCAL = fgT / EXPOSURE IF ( HDUCLAS2 == NET ) IF ( bgExposure > 0 ) IF ( bgCounts ) scale = fgExposure / bgExposure correction = scale * fgT * bgCounts / bgMass COUNTS -= round( scale * bgCounts ) STAT_ERR = sqrt( fgCounts + bgCounts * correction^2 ) ELSE STAT_ERR = fgCounts ? sqrt( fgCounts ) : 1 ELSE STAT_ERR = fgCounts ? ...

... Massive stars, having 10-150 masses of the Sun, with metallicities Z tens to hundreds times less than that of the Sun (Zo), are the main regulators of the galaxy formation and evolution processes in the early Universe. ... In this galaxy, using the 6 m BTA telescope, a new massive blue variable star with high luminosity (>=10 5 Sun's luminocities in visible light) was found. As far as its properties are concerned, this star falls into an LBV (Luminous Blue Variable) class of stars. ...

The FastSound projectтАЩs 3-D map of the large-scale structure of a region in the universe about 4.7 billion years after the Big Bang. This area covers 2.5 times 3 degrees of the sky, with a radial distance spanning 12-14.5 billion light-years in comoving distance or 8-9.6 billion light-years in light travel distance. The colors of the galaxies indicate their star formation rate, i.e., the total mass of stars produced in a galaxy every year. ... NAOJ, SDSS, CFHT ...

... We researched the regions with latitude higher than 60° for both hemispheres of the Moon. 944 craters and 1119 craters with diameters larger than 10 km was considered for North and South polar regions respectively. ... The total number of craters with a wholly shadowed floor is 44 for the North polar region and 43 for the South polar region. 111 and 122 craters have a floor permanently shadowed less than 10% at the North and South poles consequently. ... PERMANENTLY SHADOWED AREAS. ...