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Two bright eclipsing binaries solved with the help of visual observations
Visual observations of V975 Cen and NSV 15737 were combined withphotometric data from the Hipparcos and ASAS databases to determine theelements for these eclipsing binaries. V975 Cen is an Am+F binary in anextremely eccentric orbit with elements HJD 2454217.582 (±0.080)+ 135.9255 (±0.0015) x E. NSV 15737 is an EA-system made up ofvery different components with elements HJD 2454329.479 (±0.001)+ 8.161235 (±0.000001) x E.
| A catalogue of eclipsing variables
A new catalogue of 6330 eclipsing variable stars is presented. Thecatalogue was developed from the General Catalogue of Variable Stars(GCVS) and its textual remarks by including recently publishedinformation about classification of 843 systems and making correspondingcorrections of GCVS data. The catalogue1 represents thelargest list of eclipsing binaries classified from observations.
| The 74th Special Name-list of Variable Stars
We present the Name-list introducing GCVS names for 3153 variable starsdiscovered by the Hipparcos mission.
| A homogeneous catalog of new UBV and H-beta photometry of B- and A-type stars in and around the Scorpius-Centaurus OB association
B- and A-type stars in and near the Sco-Cen OB association areinvestigated with UBV and H-beta photometry to acquire data relevant tothe luminosity function of Sco-Cen. The measurements generally consistof two 10-s integrations of U, B, V, (W, N) filters, and theobservations are corrected iteratively for atmospheric extinction andinstrumental response. The data presented give the mean V magnitude,mean B-V, mean U-B, and the estimated uncertainties for these values.The catalog provides a homogeneous catalog of data for a large fieldwith stellar objects delineating membership to the association Sco-Cenand that affect the luminosity function of the aggregate.
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| Takýmyýldýz: | Erbogan |
| Sað Açýklýk: | 13h38m54.13s |
| Yükselim: | -55°01'28.2" |
| Görünürdeki Parlaklýk: | 7.359 |
| Uzaklýk: | 149.031 parsek |
| özdevim Sað Açýklýk: | -32.4 |
| özdevim Yükselim: | -2.9 |
| B-T magnitude: | 7.608 |
| V-T magnitude: | 7.38 |
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