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Survey of Candidate Pulsating Eclipsing Binaries - I
Initial results from a photometric survey of stars selected from thelist of eclipsing binaries that may contain a pulsating component bySoydugan et al. (2006) are reported. A minimum of two nights of CCDobservations with V and/or B filters of each of the 35 stars from thislist was collected. Of the 35 stars stud- ied, a pulsating component wasdetected in three of the systems. Pulsations were also serendiptiouslydetected in the eclipsing binary RR Leporis, which is not on thecandidate list.
| A catalogue of close binaries located in the δ Scuti region of the Cepheid instability strip
A catalogue of close eclipsing binary systems (detached andsemidetached) with at least one of the components located in the δScuti region of the Cepheid instability strip is presented. Thepositions of the stars in the instability strip are determined by theiraccurate temperatures and luminosities. Observationally detectedbinaries (20 semidetached, four detached and one unclassified) withoscillating components were included in the catalogue as a separatetable. The primaries of the oscillating Algols tend to be located nearthe blue edge of the instability strip. Using reliable luminosities andtemperatures determined by recent photometric and spectroscopic studies,we have found that at least one or two components of 71 detached and 90semidetached systems are located in the δ Scuti region of theCepheid instability strip. In addition, 36 detached or semidetachedsystems discovered by the Hipparcos satellite were also given as aseparate list. One of their components is seen in the δ Scutiregion, according to their spectral type or B - V colours. They arepotential candidate binaries with the δ Scuti-type pulsatingcomponents which need further photometric and spectroscopic studies inbetter precision. This catalogue covers information and literaturereferences for 25 known and 197 candidate binaries with pulsatingcomponents.
| 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.
| Catalogue of Algol type binary stars
A catalogue of (411) Algol-type (semi-detached) binary stars ispresented in the form of five separate tables of information. Thecatalogue has developed from an earlier version by including more recentinformation and an improved layout. A sixth table lists (1872) candidateAlgols, about which fewer details are known at present. Some issuesrelating to the classification and interpretation of Algol-like binariesare also discussed.Catalogue is only available in electronic form at the CDS via anonymousftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/417/263
| The 74th Special Name-list of Variable Stars
We present the Name-list introducing GCVS names for 3153 variable starsdiscovered by the Hipparcos mission.
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Dades d'Observació i Astrometria
| Constel·lació: | Virgo |
| Ascensió Recta: | 12h27m50.96s |
| Declinació: | -10°10'01.7" |
| Magnitud Aparent: | 8.545 |
| Distancia: | 182.149 parsecs |
| Moviment propi RA: | -11.4 |
| Moviment propi Dec: | -13.5 |
| B-T magnitude: | 8.938 |
| V-T magnitude: | 8.578 |
Catàlegs i designacions:
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