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Mesures de vitesses radiales. VIII. Accompagnement AU sol DU programme d'observation DU satellite HIPPARCOS
We publish 1879 radial velocities of stars distributed in 105 fields of4^{\circ} \times 4^{\circ}. We continue the PPO series \cite[(Fehrenbachet al. 1987;]{Feh87} \cite[Duflot et al. 1990, 1992 and 1995),]{Du90}using the Fehrenbach objective prism method. Table 1 only available inelectronic form at CDS via to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html
| CCD observations of diffuse interstellar bands in reflection nebulae
CCD spectra of 59 stars have been obtained in order to measure diffuseband strengths between 5690 and 5870 A. Most (37) off the stars are inreflection nebulae, and the rest are relatively unreddened comparisonstars. The pixel spacing corresponds to 0.2 A, and the signal-to-noise(S/N) ratio ranges from 60 up to 600. Six diffuse bands are measurablein the data: 5705, 5778, 5780, 5797, 5844, and 5849 A. Based on thedegree of correlation between the bands in pairs, as well as with E(B-V)and the 2175 A extinction bump, the bands can be divided into threegroups. The first one consists of the narrow bands at 5780, 5797, and5849 A. The second group contains the broad bands at 5778 and 5844 A,while 5705 A lies in between these groups in terms of correlationbehavior. The second group correlates very badly with E(B-V), and thevery broad 5778 A band is the only one that shows a very goodcorrelation with the 2175 A bump.
| BVR observations of polarization parameters of stars in reflection nebulas
The observed polarizations of the nuclei of reflection nebulas and fieldstars in B, V, R filters are given. A connection has been found betweenthe direction of the polarization vector, the structure of thereflection nebula, and the shape of the cloud in which the nebula issituated. The direction of the plane of polarization for stars seenthrough the filamentary structure of a nebula is the same as thedirection of the filaments. Stars situated at the edges of clouds andchannels have direction of the polarization vector the same as theapparent boundary of the cloud.
| Observational studies relating to stars formation. III.
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| UBV photometry of the reflection nebula CED 201.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1971AJ.....76..321R&db_key=AST
| Observations of the Spatial Structre of Interstellar Hydrogen. I. High-Resolution Observations of a Small Region
Abstract image available at:http://adsabs.harvard.edu/abs/1967ApJS...15...97H
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