... 320, P L45-L48 (1997). Abstract . ... 320, P L49-L52 (1997). ... 320, P L53-L56 (1997). ... 320, P L57-L59 (1997). ... 320, P 685-695 (1997). ... 320, P 696-704 (1997). ... 320, P 705-716 (1997). ... 320, P 717-730 (1997). ... 320, P 731-745 (1997). ... 320, P 746-756 (1997). ... 320, P 757-775 (1997). ... 320, P 776-782 (1997). ... 320, P 783-786 (1997). ... 320, P 787-790 (1997). ... 320, P 791-798 (1997). ... 320, P 799-810 (1997). ... 320, P 811-822 (1997). ... helpdesk@link.springer.de . ...

... Near-IR broad-band imaging of V1318 Cygni reveals the presence of two distinct stellar components oriented north-south, a result recently reported by Aspin et al. ... The distribution of the high density molecular gas traced by the CS J emission is highly concentrated around V1318 and V1686 Cygni, while the total column density of gas traced by the J shows a ridge morphology centered on these sources. ... A molecular outflow has been detected in CO J . ...

... 640W A survey of ultracompact (UC) Hii regions has been carried out by searching for 6.669-GHz methanol maser emission from a sample of 535 IRAS-selected candidates. A total of 201 candidates exhibit methanol emission. These sources have been used, in conjunction with previously identified UC Hii regions, to provide a base for further studies of such regions. ... Methanol maser and/or radio continuum emission is found in 364 cases towards IRAS-selected regions. ...

... Science Users Information > Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Planetary Nebulae and HII regions in the Elliptical Galaxy NGC 5128 . ... NGC 5128 is the closest example of a giant early type (elliptical or S0) galaxy. Although often dubbed as a peculiar elliptical galaxy since it has a dust lane with recent star formation and an active galactic nucleus, the majority of early type galaxies have similar structures as revealed by recent surveys. ...

Below are links to the grids of theoretical spectra of non-LTE, line blanketed model atmospheres including stellar winds ( CoStar models for O3-B0 stars ) from Schaerer de Koter (1997, A , 322, 598) [Abstract] , [Postscript] ). ... The following data is available electronically: . ... ftp directory with the individual files All data available for mass FTP at: . ... A large grid of photoionization models for single star HII regions has been calculated using the CoStar fluxes. ...

... 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, . ...

... About ATNF overview . ... Australia Telescope Steering Committee . ... LMC H II Region Luminosities versus . Observed Ionizing Stars . ... These values are compared to the observed H II region luminosities, yielding an estimate for the mean fraction of H-ionizing photons that escape the local nebulae in this sample. We formally estimate that, overall, 0-51% of the ionizing radiation escapes the local H II regions and is available to ionize the warm, ionized medium in the LMC. ...

. This article is a biographical note on Kenneth Essex Edgeworth, sometime Army officer, engineer, economist and independent theoretical astronomer. A bibliography of Edgeworth's known papers is incorporated, and his interesting cosmogonic theories are highlighted, in particular his postulation in 1943 of a source of potential comets occupying the region of the solar system beyond Neptune, recently termed the Kuiper belt.

Proceedings of the Particle Physics and Early Universe Conference (PPEUC). For this paper: postscript PPEUC CMB index 1 Observations.. ... VLA observations at 8.4 GHz of a field within one of the Hubble MDS regions have allowed us to set upper limits on fluctuations in the CMBR on angular scales from down to . ... We interpret it as the Sunyaev--Zel'dovich signal from a high redshift cluster. Interestingly, within about of this decrement, lie two radio-quiet quasars both at . ...

... An error involving a missing tasks parameter indicates that the parameter file may have changed between the last time the task was used and the current version. ... If still in trouble, delete the parameter file in `myiraf/uparm' corresponding to the task (the names are somewhat contrived, but with a bit of imagination it is not too difficult to identify the right one). ... The imcnts task and region masks . ... A region descriptor of the kind: . CIRCLE(403, 403, 22.5) . ... See `help regions'.) ...

... Tikhonov N.A., Lebedev V.S., Galazutdinova O.A., . ... Tikhonov N.A., Galazutdinova O.A., Lebedev V.S., . Stellar Content of the Metal-Poor Galaxy DDO 68, . Astronomy Letters, Vol. ... Stellar Content of the Interacting Galaxies IC 1727 and NGC 672, . ... Tikhonov N.A., Galazutdinova O.A., . ... Tikhonov N.A., Galazutdinova O.A., Tikhonov E.N., . ... Karataeva G.M., Tikhonov N.A., Galazutdinova O.A., Hagen-Thorn V.A., . ... Tikhonov N.A., Galazutdinova O.A., Drozdovsky I.O., . ...

... Parameter Mand Type Default Constraints set yes string The input OM OSW source list srcnumber yes integer The number of the source in the OM OSW source list srcradius yes real 3 The size of the source extraction radius : in FWHM of the source PSF, if it is positive, and in xed pixels if it is negative bkginner yes real 1 The inner radius of the background extraction ... The output region les could be based on the input root plus the source number. ...

NATIONAL ASTRONOMY AND IONOSPHERE CENTER . ... Kick-Off Ceremony of the Arecibo Observatory 50th Anniversary . ... Project Supervisors: Dr. R. Minchin & Dr. R. Taylor, Arecibo Observatory . Abstract . ... Project Supervisors: Dr. R. Taylor & Dr. R. Minchin, Arecibo Observatory . ... Project Supervisors: Christiano Garnett Marques Brum, Edvier Cabassa-Miranda & Nestor Aponte, Arecibo Observatory . ... For this, we are using TEC data registered at the Arecibo Observatory site from 2004 to 2012. ...

Find Similar Abstracts . ... The 'black' regions of the Universe . ... The significance of regions devoid of galaxies (black regions) for the bunching and fragmentation theories of the evolution of the Universe is discussed. ... Using the theory, a lower limit on the average density of the gas remaining in the black regions can be set, based on the finding that eight percent of gas elements are expanding in all three dimensions at the first stage of fragmentation. ...

... Study of Mg-Fe-silicate glasses of variable composition. ... With the new data, the astrophysical discussion started in Paper I was continued and focussed on the comparison of the olivine glass data with IRAS LRS spectra of O-rich circumstellar envelopes around Mira stars. ... The new olivine glasses point to the interesting consequence that the temperature for silicate dust grains at the inner edge of circumstellar envelopes must be considerably higher than the values often given in the literature....

You Can Make Stellar Images Brighter . Articles | ... A few months ago I wrote an article titled "You Can’t Make Them Brighter". So why am I now writing that you can make them brighter. ... The image of a focused star is actually a small disk called the Airy disk, named after the 19 th century scientist Sir George Airy. ... For a given aperture, a smaller Airy disk means that the light is focused to a smaller disk and is therefore brighter. ... www.astronomy.net . About Astronomy Net | ...

The Earth's magnetosphere global structure is conditioned by the interaction of the Solar wind and Earth's magnetic field. ... Solar wind (SW) - the region outside BS; . ... Auroral field lines (AUR) region - the funnel-shape cavity restricted by the geocentric distance of the order of 6 RE, between surfaces formed by magnetic field lines emerged from the polar and equatorial OVAL borders; . ... Fairfield D.H., Average and unusual location of the Earth's magnetopause and bow shock, J. Geophys. ...

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... Translate Abstract . ... Structure and properties of IRC+10216 . ... AA(Stockholm Observatory, SE--133 36 Saltsj baden, Sweden), AB(Special Astrophysical Observatory, Nizhnij Arkhyz, Karachaevo-Cherkesia, 357147, Russia), AC(Max-Planck-Insitut f r Radioastronomie, Auf dem H gel 69, D--53121 Bonn, Germany), AD(Max-Planck-Insitut f r Radioastronomie, Auf dem H gel 69, D--53121 Bonn, Germany), AE(Max-Planck-Insitut f r Radioastronomie, Auf dem H gel 69, D--53121 Bonn, Germany) . ... Abstract Text . ...

... astro-ph . ... Whitespace-separated words are treated as AND ed. Show 10 50 100 articles per page in Full Compact mode . ... Quasar Variability in the Framework of Poissonian Models . ... It is shown that in this very general framework the well established anti-correlation between variability amplitude and wavelength can only be understood as an effect of an underlying spectral component which remains stable on long time-scales, and is redder than the variable component. ...