.

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• Blue spectrum of subdwarf G27-44
• New spectrum of MWC162 6-m telescope: representative spectra

... 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. ...

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• Optical spectroscopy
• A 10-GHz Radio Continuum Survey
• Results and Discussion

... At a spatial scale of 0."0287 per pixel these data provide an order of magnitude improvement in resolution over previous ground based spectra and allow us to trace the interaction between the radio jet and the gas in the NLR. ... Furthermore, the material enveloping the radio-jet is in a much higher ionization state than that of the surrounding NLR gas. ... 4 ) Dipartimento di Astronomia e Scienza dello Spazio Universit di Firenze, Largo E. Fermi 5, I-50125, Italy . ... huizinga@stsci.edu . ...

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• ST ScI Preprint #1353
• Mid-Infrared Spectral Diagnostics of Nuclear and Extranuclear Regions in Nearby
• The Effects of Dust in Simple Environments: Large Magellanic Cloud H II Regions

... The task calculates an average RMF over the spatial region used to extract the source spectrum. ... Essentially a grid is placed over the source region and the redistribution parameters calculated at each point. ... By means of command line parameters the averaging may be performed assuming that the flux distribution is that of the point spread function (PSF), a flat uniform distribution or it may be defined explicitly by supplying the task with an image containing the source region. ...

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• Spatial region settings

... About ATNF overview . ... Australia Telescope Steering Committee . ... Parkes radio telescope . Australia Telescope Compact Array . ... Information & tools for observers . ... Virtual Radio Interferometer . ... The ratio above is called the resolution of the telescope. ... An interferometer works most efficiently, in the sense of returning the most information about the intensity and size of the source being observed, for a source whose size is comparable with the telescope's resolution. ...

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• Fast Rotation in the Nuclear Region of the Galaxy NGC 1808
• The Nuclear Region: HI Absorption Measurements
• The Peculiar Spiral Galaxy NGC 1808

... 1994: . As a result of comparing the spectra of active solar regions from the observations with high spatial resolution in the microwave range at the RATAN-600 (the S-component) with a flare component observed at meter wavelengths on the VLA (USA) we revealed the presence of a strong and prolonged noise storm exactly where a weak decaying active region (with the presence of powerful active regions in the disk) is located. ... Archive . ...

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• Detection of polarized radiation sources with unusual spectral characteristics
• Solar system sector, archive 1993

Herschel Guaranteed-Time Key Projects . at Arcetri . ... Both regard spectroscopic observations of different classes of star-forming regions in the Galaxy. WISH: WATER IN STAR-FORMING REGIONS WITH HERSCHEL . ... HS3F: HERSCHEL SPECTRAL SURVEYS OF STAR FORMATION REGIONS . ... Since gas cools mostly by line emission, knowing what molecules are formed and which lines are emitted in the different regions at different times is mandatory to understand the gas thermal balance. ...

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• G35.20-1.74 (Abstract)
• A collection of images
• Gaspra - Galileo

... 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, . ...

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• ADASS 2003 Conference Proceedings
• A Method for Obtaining Reliable IRAS-LRS Data via the Groningen IRAS Server
• IDL-based Database of Solar Active Regions

... W e study the SPS for each of regions in the Bridge, as a function of velocity and of velocity integrated width. ( v): There is considerable variation in the HI structure throughout the MB. W e probe the power spectra for four different regions in the Bridge (see Figure 1). ... W e find that the northern regions have a peak value of (v) which is ver y distinct from the sout her n regio ns. ( dv): The variation of the power spectrum index, as a function of velocity is shown in Figure 3. ...

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• http://www.naic.edu/vscience/schedule/tpfiles/GoldsmithtagA2004tp.pdf
• http://www.naic.edu/vscience/schedule/tpfiles/CampbelltagR2023tp.pdf
• http://www.naic.edu/vscience/schedule/tpfiles/GoldsmithtagA2004tp.ps

... This section will deal with obtaining photons within specified regions of an image. Available regions are: Annulus Box Circle Ellipse Field -- entire field Irregular region based on intensity of map... i.e. region defined by contour levels. ... The imcnts task in the xray-spatial package sums the source and background counts in specified regions, and subtracts one from the other properly normalized. ... imcnts* - Find counts in an extended region, after removing an embedded point source . ...

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• Source Selection
• Chandra Images for G184.6-05.8
• A Region mask for a radial profile in concentric, elliptical annuli

... The project assumes creation of an international space observatory - the interferometer "Earth - Space - Space" in order to perform of astronomical investigations in millimeter, submillimeter and infrared regions with extremely high sensitivity (to a few nanoJanskies units of flux density in continuum spectrum) and extremely high angular resolution (to a parts of microsecond of arc or, possibly, nanosecond). ... radio-interferometric channels of the system "Space - Space", region 0.2 - 3 mm; . ...

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... High spectral, spatial and temporal resolution UV observations of the quiet Sun transition region show a highly structured and dynamical environment where transient supersonic flows are commonly observed. ... Estimates of the kinetic and enthalpy fluxes associated with these events show that explosive events are not important so far as solar coronal heating is concerned. ... In some cases, non-Gaussian line profiles are associated with supersonic flows in small magnetic loops. ...