UBV beta Database for Case-Hamburg Northern and Southern Luminous Stars
A database of photoelectric UBV beta photometry for stars listed in theCase-Hamburg northern and southern Milky Way luminous stars surveys hasbeen compiled from the original research literature. Consisting of over16,000 observations of some 7300 stars from over 500 sources, thisdatabase constitutes the most complete compilation of such photometryavailable for intrinsically luminous stars around the Galactic plane.Over 5000 stars listed in the Case-Hamburg surveys still lackfundamental photometric data.
|
A spectroscopic database for Stephenson-Sanduleak Southern Luminous Stars
A database of published spectral classifications for objects in theStepenson-Sanduleak Luminous Stars in the Southern Milky Way catalog hasbeen compiled from the literature. A total of 6182 classifications for2562 stars from 139 sources are incorporated.
|
High-velocity interstellar gas in the lines of sight to the Wolf-Rayet stars HD 97152 and HD 96548
The interstellar medium was studied in the direction to the WR stars HD96548 and HD 97152, and the results are reported. New observational dataon the UV spectra of several field stars near both these WR stars arepresented. The high-velocity gas seen in the spectra of these starssuggests that the detected expanding interstellar gas structure consistsof two OB cluster supershells. The presence of high-velocity absorptioncomponents in one of five field star spectra in the direction of themore isolated WR star HD 96548 suggests that this expanding gas does notoriginate from the optical ring nebula RCW 58 surrounding HD 96548, aspreviously believed, but instead indicates the detection of a previouslyunknown expanding interstellar shell in this line of sight.
|
Expanding shells of interstellar gas in the lines-of-sight to Wolf-Rayet stars
High-velocity interstellar gas was detected in the directions toward theWR stars HD 97152 and HD 96548 by interstellar resonance absorptionlines in high-resolution IUE spectra. Shifted line components in thespectra of 5 field stars covering an area of 2 deg around HD 97152exhibit velocities up to -150 km/sec. The presence of numerous otherearly-type stars in this region plus an analysis of IRAS image datasuggest that this expanding interstellar structure is a stellarwind-blown shell which may be unrelated to the WR star. High-velocitygas seen in the line-of-sight to HD 96548 does not originate from thestar's optical ring nebula (RCW 58) but from a large, expandinginterstellar shell at least 40 pc in diameter. With velocities up to-120 km/sec and a location well off the galactic plane, thisinterstellar gas may be a highly evolved supernova remnant like thatassociated with the WR star HD 50896.
|
Merged log of IUE observations.
Not Available
|
UBV photometry for southern OB stars
New UBV photometry of 1227 OB stars in the southern Milky Way ispresented. For 1113 of these stars, MK spectral types have been reportedpreviously in a comprehensive survey to B = 10.0 mag.
|
On the 4430 A interstellar band - A visual classification
A system of visual classification of the strength of the interstellarband 4430 A has been developed, based on spectra taken at spectralclassification dispersion. The intensity of the band was divided into 8main classes, defined by a group of selected standard stars. The systemwas applied to 1,111 southern OB stars contained in the catalog ofspectral types by Garrison, Hiltner, and Schild (1977). The mean errorin the classification was estimated to be plus or minus 1 class.Equivalent widths were measured for 100 stars; an excellent correlationwith the visual estimations was obtained. A calibration between thesetwo parameters is given.
|
MK spectral classifications for southern OB stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1977ApJS...35..111G&db_key=AST
|
