|Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics|
The Catalogue, available at the Centre de Données Stellaires deStrasbourg, consists of 13 573 records concerning the results obtainedfrom different methods for 7778 stars, reported in the literature. Thefollowing data are listed for each star: identifications, apparentmagnitude, spectral type, apparent diameter in arcsec, absolute radiusin solar units, method of determination, reference, remarks. Commentsand statistics obtained from CADARS are given. The Catalogue isavailable in electronic form at the CDS via anonymous ftp tocdsarc.u-strasbg.fr (18.104.22.168) or viahttp://cdsweb.u-strasbg.fr/cgi-bin/qcar?J/A+A/367/521
|Observations of Solid Carbon Dioxide in Molecular Clouds with the Infrared Space Observatory|
Spectra of interstellar CO_2 ice absorption features at a resolvingpower of lambda/Deltalambda~1500-2000 are presented for 14 lines ofsight. The observations were made with the Short-Wavelength Spectrometer(SWS) of the Infrared Space Observatory (ISO). Spectral coverageincludes the primary stretching mode of CO_2 near 4.27 μm in allsources; the bending mode near 15.2 μm is also detected in 12 ofthem. The selected sources include massive protostars (Elias 29 [in rhoOph], GL 490, GL 2136, GL 2591, GL 4176, NGC 7538 IRS 1, NGC 7538 IRS 9,S140, W3 IRS 5, and W33 A), sources associated with the Galactic Center(Sgr A^*, GCS 3 I, and GCS 4), and a background star behind a quiescentdark cloud in Taurus (Elias 16); they thus probe a diverse range ofenvironments. Column densities of interstellar CO_2 ice relative to H_2Oice fall in the range 10%-23%: this ratio displays remarkably littlevariation for such a physically diverse sample. Comparison of theobserved profiles with laboratory data for CO_2-bearing ice mixturesindicates that CO_2 generally exists in at least two phases, one polar(H_2O dominant) and one nonpolar (CO_2 dominant). The observed CO_2profiles may also be reproduced when the nonpolar components arereplaced with thermally annealed ices. Formation and evolutionaryscenarios for CO_2 and implications for grain mantle chemistry arediscussed. Our results support the conclusion that thermal annealing,rather than energetic processing due to UV photons or cosmic rays,dominates the evolution of CO_2-bearing ices.
|The Southern Vilnius Photometric System. IV - The E region standard stars|
This paper is the fourth in a series on the extension of the Vilniusphotometric system to the Southern Hemisphere. Observations were made of60 stars in the Harvard Standard E regions to increase a set of standardstars.
|Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue.|
We give a common version of the two catalogues of Mean Radial Velocitiesby Wilson (1963) and Evans (1978) to which we have added the catalogueof spectroscopic binary systems (Batten et al. 1989). For each star,when possible, we give: 1) an acronym to enter SIMBAD (Set ofIdentifications Measurements and Bibliography for Astronomical Data) ofthe CDS (Centre de Donnees Astronomiques de Strasbourg). 2) the numberHIC of the HIPPARCOS catalogue (Turon 1992). 3) the CCDM number(Catalogue des Composantes des etoiles Doubles et Multiples) byDommanget & Nys (1994). For the cluster stars, a precise study hasbeen done, on the identificator numbers. Numerous remarks point out theproblems we have had to deal with.
|Secondary standards for H-beta photometry in the Southern Hemisphere (second series).|
|Southern JHKL standards|
The basis for the current SAAO standard photometric system at JHKL isgiven. This depends on an extensive investigation involving 230 starsdistributed around the sky. The accuracy is estimated at + or - 0.02 magfor J, H and K and + or - 0.05 mag for L.
|UBV (RI)c standard stars in the E- and F-regions and in the Magellanic Clouds - a revised catalogue.|
|Secondary standards for the Stromgren UVBY system|
Observations of 158 E region stars have been made in the Stromgrensystem, using the 46-cm reflector at Cape Town. They are mostly brighterthan eighth magnitude and are intended for use as secondary standardsfor the four-color system. The E region relative zero points are definedwith a precision of + or - 0.001 mag, and the internal standard errorsof the colors life between + or - 0.001 and + or - 0.002 mag.
|DDO Observations of Southern Stars|
|Photoelectric standards of intermediate brightness in the E-regions. I. UBV photometry.|
|Photometric standard stars for the UBV and (RI)KC systems.|
|VRI standards in the E regions|
|Optical polarization of stars of galactic latitudes b-45 degres.|
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1976A&AS...23..125S&db_key=AST
|Standard Stars for VRI Photometry with S25 Response Photocathodes [Errata: 1974MNSSA..33....1C]|
|Narrow-Band and Broad-Band Photometry of Red Stars. III. Southern Giants|
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970ApJ...161..199E&db_key=AST
|Standard magnitudes in the E regions.|