Augmentation of the IUE Ultraviolet Spectral Atlas final report, contract NAS5-32483

Cover of: Augmentation of the IUE Ultraviolet Spectral Atlas |

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .

Written in English

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Subjects:

  • Ultraviolet spectra.,
  • Spaceborne astronomy.,
  • Stellar spectra.,
  • Ultraviolet astronomy.,
  • Astronomical catalogs.

Edition Notes

Book details

Other titlesIUE Ultraviolet Spectral Atlas.
Statementprincipal investigator, Chi-Chao Wu.
Series[NASA contractor report] -- NASA-CR-202699., NASA contractor report -- NASA CR-202699.
ContributionsUnited States. National Aeronautics and Space Administration.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL15487127M

Download Augmentation of the IUE Ultraviolet Spectral Atlas

Augmentation of the IUE Ultraviolet Spectral Atlas - NASA/ADS The first edition of the IUE Ultraviolet Spectral Atlas was published in by Wu et al in printed and magnetic tape versions and it has been widely used by the astronomical community for research and teaching : Chi-Chao Wu.

Get this from a library. Augmentation of the IUE Ultraviolet Spectral Atlas: final report, contract NAS [Chʻi-Chʻao Wu; United States. National Aeronautics and Space Administration.]. The IUE Ultraviolet Spectral Atlas and the first addendum were published by Wu et al. in printed and machine readable versions.

This atlas and addendum contain UV spectra of stars with spectral types ranging from O3 to M5 and many spectral type-luminosity class : Chi-Chao Wu.

Augmentation of the IUE Ultraviolet Spectral Atlas - NASA/ADS IUE is the only and last satellite which will support a survey program to record the ultraviolet spectrum of a Author: Chi-Chao Wu. The IUE Ultraviolet Spectral Atlas and the first addendum were published by Wu et al.

in printed and machine readable versions. This atlas and addendum contain UV spectra of stars with spectral types ranging from O3 to M5 and many spectral type-luminosity class : Chi-Chao Wu. Augmentation of the IUE Ultraviolet Spectral Atlas [microform]: final report, contract NAS / pri The quiescent and flaring EUV spectrum of algol and its relationship to other active coronae EUV spectro The ultraviolet spectrum of HH 24A and.

10 smaller than that of IUE, often encompassing only a few bright star clusters. Thus, our study provides a small scale probe of the ISM and stellar populations, which we compare to the more global view offered by IUE.

In this paper we present a UV spectral atlas of HST observations and consider the. We are planning to compile a spectral atlas based on high-dispersion images of representative late-type stars recorded by the International Ultraviolet Explorer.

We solicit advice from the ultraviolet community concerning how best to present the spectral material. NASA Reference Publication National Aeronautics and Space Administration Off ice of Management Scientific and Technical Information Program International.

While far-ultraviolet spectra of meteorites and lunar samples have been measured and interpreted (Hapke et al., ; Wagner et al.,; Wagner, ), atmospheric SPECTRAL REFLECTANCE ATLAS absorption has prevented direct observation of planetary objects.

The IUE Ultraviolet Spectral Atlas of Selected Astronomical Objects (or 'the Atlas'), is based on the data that were available in the IUE archive inand is intended to be a quick reference. We compare Mid-Ultraviolet (MUV) spectra of Pluto taken over a period of 20 years by the International Ultraviolet Explorer, the HST-Faint Object Spectrograph, and the HST-Cosmic Origins extract Pluto-only spectra from the IUE data and associate them with corrected longitudes when necessary.

Comparing them with HST spectra provides further evidence of temporal. The IUE Ultraviolet Spectral Atlas of Selected Astronomical Objects (or 'the Atlas'), is based on the data that were available in the IUE archive inand is intended to be a quick reference for the ultraviolet spectra of many categories of astronomical objects.

International Ultraviolet Explorer (IUE) ultraviolet spectral atlas of selected astronomical objects. [Washington, D.C.]: National Aeronautics and Space Administration, (OCoLC) Material Type: Government publication, National government publication, Internet resource: Document Type: Book, Internet Resource: All Authors.

A library of mean UV stellar energy distributions is derived from IUE spectrophotometry of stars. The spectra cover A with a spectral resolution of about 6 A.

The UV spectral slopes in Figure 10 can also be compared to the slopes derived from the GALEX FUV and NUV fluxes β GALEX (Column 12 in Table 5). Ten galaxies have available measurements of both β GALEX and β IUE. On average the two sets of UV spectral slopes agree: β GALEX − β IUE = ± However, this agreement is significantly.

This convention has been continued in the International Ultraviolet Explorer (IUE) Project, but is currently being changed in their newest pipeline processing system, and eventually the entire archive will make use of only vacuum wavelengths.

We present a review of UV observations of massive stars and their analysis. We discuss O stars, luminous blue variables, and Wolf–Rayet stars. Because of their effective temperature, the UV (− Å) provides invaluable diagnostics not available at other wavebands.

Enormous progress has been made in interpreting and analysing UV data, but much work remains. To facilitate. Inspired by the Copernicus atlas, Smith (, hereafter Paper I) constructed a far-UV spectral atlas for B stars using spectra from FUSE, IUE, and the Space Telescope Imaging Spectrograph (STIS) over the (vacuum) wavelength range – Å.

In making this atlas we set an arbitrary short wavelength limit of Å because, other than for a. Abstract. Here we present a pattern classification technique based on an Artificial Neural Network (ANN) in a multi-level tree configuration to classify ultraviolet stellar spectra from the IUE Low-Dispersion Spectra Reference inary results of this technique show that 94% of the spectra have been classified correctly with an accuracy of one sub-class.

UV-visible spectroscopy. These provide valuable insight into the uses and limitations of this technique for chemical analysis. The primary applications of UV-visible spectroscopy are also briefly reviewed.

Basic principles The electromagnetic spectrum Ultraviolet (UV) and visible radiation comprise only a small part. The International Ultraviolet Explorer (IUE) archives contain a wealth of information on high quality ultraviolet spectra of approximately planetary nebulae, their central stars, and related objects.

Selected are representative low-dispersion IUE spectra in the range to A for objects arranged by Right Ascension (RA) for this. Solar EUV and UV spectral atlases online. SOHOSUMER EUV Solar Spectral Atlas The first EUV spectral atlas obtained with SUMER has been made available on the Web.

The atlas covers the spectral range - Å ( - Å in 2nd order). The SUMER spectrum, with all its details, clearly demonstrates the strength of this instrument.

Far Ultraviolet Spectral Images of theVelaSupernova Remnant K. Nishikida1, J. Edelstein1, E. Korpela1, R. Sankrit1, Emission line studies of Vela have been carried out using IUE (Raymond et al.

), HUT (Raymond et al. ), FUSE (Sankrit et al. ) and Voyager 2. Abstract. Ultraviolet spectra of two intermediate polars (IPs), PQ Gem and V Aur, observed with Hubble Space Telescope (HST) Space Telescope Imaging Spectrograph and Faint Object Spectrograph and International Ultraviolet Explorer (IUE) satellites were analyzed during the.

Scheme based on the artificial neural networks (ANNs) trained with multi-layer back propagation using single level network for classifying ultraviolet spectra in the IUE Low-Dispersion Spectra Reference Atlas is presented.

We compare the classification results obtained from single-level network with the one from multi-level neural tree network. The Atlas UV Test is an economical instrument for fluorescent UV and condensation weathering test methods which uses UVAUVBor UVA fluorescent bulbs for a variety of applications.

ambivalent spectral class. DESCRIPTION OF THE ATLAS This atlas contains samples and analysis of the far-UV spec­ tra of 32 symbiotic stars made with the IUE SWP camera be­ tween We have selected the spectra with the best signal-to-noise ratio from those presently available in.

For technical reasons these wavelength regions are inaccessible to Space Telescope (ST) and the International Ultraviolet Explorer (IUE) satellite but are important for probing high-temperature regions of the interstellar medium, galactic halos, and the outer atmospheres of stars.

A free-flying Advanced Solar Observatory (ASO) in space. "The Copernicus ultraviolet spectral atlas of VEGA" ApJS R Niedzielski, A.

et al. "Elemental depletions in single interstellar clouds" A&A N Cheng, K. et al. "The ionization of the local ISM based upon constraints from IUE data" uvaiC Sonneborn, G. The low-dispersion, short-wavelength IUE spectra also show this same trend in the solar transition=region emissions.

The lines formed above a temperature of ab K, such as C II, C IV, Si IV, and N V are clearly visible in 77 Tau and _ Tau (Figure 2). The IUE satellite permitted extension of such studies to galaxies outside the Local Group. An atlas of all scientifically useful spectra of star-forming and active galaxies summarizes IUE ’s data collection [].

Figure 2 shows an example from this work. At a distance of Mpc, NGC is one of the UV-brightest star-forming galaxies due to the presence of a single extremely bright star. International Ultraviolet Explorer NASA Newsletter, #22, Standard Stars The IUE Ultraviolet Spectral Atlas Low-dispersion spectra of seventy-two objects are presented, ordered by decreasing temperature.

Where possible, both SWP ( Å) and LWR ( Å) images are plotted for each star. A table gives detailed observing information. In heterocyclic compound: Ultraviolet, infrared, nuclear magnetic resonance, and mass spectra.

The ultraviolet spectrum of an organic compound (the pattern of its light absorption in the ultraviolet region of the spectrum) is characteristic of the π-electron system of the molecule—i.e., of the arrangement of double bonds within the structure.

t: iue uv spectral atlas of selected astronom objects t: nasa reference publication a: wu,c.,et al c: qbi58 reference t: the internet directory a: braun,eric c: tk i57 b73 x: t: the internet for scientists and engineers a: thommas,brian j. c: tk i57 t48 x: t: interplanetary dynamical processes.

Abstract We report far ultraviolet observations of Ceres obtained with the Cosmic Origin Spectrograph (COS) of the Hubble Space Telescope in the search for atomic emissions from an exosphere.

The d. This course is designed to introduce participants to the analytical technique of UV-visible spectroscopy. The course covers the properties of the electromagnetic spectrum and the basic principles of UV-visible spectroscopy as well as terms used to describe this analytical technique.

The course also introduces the equipment used to perform UV-Visible spectroscopy and covers the way typical UV. For help or more information, contact A. Kramida. This database was funded [in part] by NIST's Standard Reference Data Program (SRDP) and by NIST's Systems Integration for Manufacturing Applications (SIMA) Program.

Inquiries or comments: Feedback Online: June - Last update: Aug June Ultraviolet–visible spectroscopy or ultraviolet–visible spectrophotometry (UV–Vis or UV/Vis) refers to absorption spectroscopy or reflectance spectroscopy in part of the ultraviolet and the full, adjacent visible spectral regions.

This means it uses light in the visible and adjacent ranges. The absorption or reflectance in the visible range directly affects the perceived color of the. A survey of the middle and vacuum ultraviolet spectroscopy of the upper atmosphere. The various physical and chemical processes involved in the interaction of radiation with the atoms and molecules of the upper atmosphere are reviewed, and the ultraviolet spectral features that result from these processes are summarized.

UV-visible spectrometers can be used to measure the absorbance of ultra violet or visible light by a sample, either at a single wavelength or perform a scan over a range in the spectrum.

The UV region ranges from to nm and the visible region from to nm. The technique can be used both quantitatively and qualitatively.The most successful ultraviolet satellite to date was the International Ultraviolet Explorer (IUE) launched in The IUE was a joint project of the United States, Great Britain, and the European Space Agency.

With very sensitive equipment, the IUE .The UV/visible/near-IR instrument is equipped with a sap-phire sample window cooled to K by an extended liquid he-lium transfer cryostat. The sample window can be rotated under vacuum to face, alternatively, two spectroscopic window ports, the matrix gas and H n-PAH deposition lines, and a MgF 2 vacuum UV window port.

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